Seta - Balanced Direct Coupled Ultra Wide Bandwidth Phono Preamplifiers

       Our new flagship phono stage - the Seta® L20.

       
Read more about this revolutionary phono preamplifier here.


Seta®

Balanced Direct Coupled Battery Powered Ultra Wide Bandwidth Ultra Low Distortion Low Noise Preamplifiers

Customer comments on our Seta Model L: "I've evaluated the RIAA out and compared to my Aesthetix Rhea Signature phono amp. I have to tell you that I'm amazed at how good the Seta L RIAA circuit is. Fantastic resolution and bandwidth plus depth. I've already sold my Aesthetix Rhea Signature phono amp - your Seta L rendered it redundant! If I'd known how good the Seta was I would have purchased long before now but then, you only know what you know.

By occupation, I'm a professional aerospace engineer so I like technical challenge too. I take my hat off to you and wonder how you have found the time to design such amazing hardware and software products. If you were a Brit over here, I'm sure you would have won a Queen's award for innovation by now. Keep up the good work! "



Channel D   Channel D

Stereophile 2010 - 2017 Editor's Choice Recommended Components (Class "A") (Seta Model L)
The Absolute Sound - 2015 - 2017 Editors' Choice Award (Seta Model L)


Lino

Balanced Direct Coupled Wide Bandwidth Low Distortion Ultra Low Noise MC Preamplifier

Channel D

Positive Feedback Online 2015 Brutus Award (Lino)


Seta phono preamplifiers offer a fully balanced (from input to output), low-noise direct coupled (DC) differential circuit design providing the users of Pure Vinylsoftware with the end-to-end route to the superb performance of "flat" vinyl reproduction (linear amplification followed by software RIAA correction).
  • "Flat" outputs perfect for use with Pure Vinyl software RIAA correction
  • Ultra wide bandwidth (up to 20 MHz / 20,000 kHz / 20,000,000 Hz) delivers stunning improvements in smoothness, clarity, definition and 3-D imaging
  • Precision RIAA Correction provides simultaneous "Flat" and conventional RIAA Corrected, independently buffered and balanced (XLR) and single ended (RCA) outputs

Channel D Phono Preamplifiers

Seta L20 Seta Model L / Model H Seta Piccola Mk2 Lino
Product Description Dual-Mono, Balanced
Ultra-Ultra-Wide Bandwidth
Ultra-Low Distortion
Rechargeable Battery Powered
Ultra-Low Noise MC Phono Preamplifier
Balanced
Ultra-Wide Bandwidth
Ultra-Low Distortion
Rechargeable Battery Powered
Low Noise MM or MC Phono Preamplifier
Balanced
Ultra-Wide Bandwidth
Ultra-Low Distortion
Rechargeable Battery Powered
Low Noise MM and MC Phono Preamplifier
Balanced
Wide Bandwidth
Ultra-Low Distortion
Ultra-Low Noise MC Phono Preamplifier
Application Low Output MC Cartridges Model L - Low Output MC Cartridges
Model H - Moving Magnet Cartridges
Moving Magnet and Low Output MC Cartridges Low Output MC Cartridges
Internal Low Noise AGM Rechargeable Battery Power Supply yes yes yes  
Gain 1 +58, 61, 64, 70 dB +55, 58, 61, 64 dB (Model L)
+35, 38, 41, 44 dB (Model H)
+55, 58, 61, 64, 67, 70 dB (MC)
+35, 38, 41, 44 dB (MM)
+55, 58, 61, 64 dB
Gain Adjustment Front Panel Selector Switches (one for each channel) Front Panel Selector Switch Internal Switches Internal Switches
Cartridge Loading Internal Switches and Plug-In Components External Switch Internal Switches and Plug-In Components Internal Switches and Plug-In Components
Precision +/- 2 dB Cartridge Channel Balance TRIM Control Front Panel Rear Panel Front Panel  
Fully Balanced XLR Inputs yes yes yes yes
Single-Ended (Unbalanced) RCA Inputs yes yes RCA to XLR Adapter Included yes
Fully Balanced XLR Outputs 2 yes Flat and RIAA yes Flat and RIAA yes Flat yes Flat or RIAA (configurable)
Single-Ended (Unbalanced) Standard Phono RIAA EQ on RCA Outputs yes yes yes yes
Signal to Noise Ratio, 20 Hz - 20 kHz (maximum gain setting, referred to 0.5 mV input, A Wtd.) 88 dB (Flat) / 87 dB (RIAA) 77 dB (Flat) / 71 dB (RIAA) 79 dB (Flat) / 78 dB (RIAA) 79 dB (Flat) / 76 dB (RIAA)
Frequency Response at highest gain setting, -3 dB 3 DC to 20,000,000 Hz (that's 20 megahertz - not a typo of 20,000 Hz) DC to 5,000,000 Hz (Model L)
DC to 2,000,000 Hz (Model H)
DC to 1,000,000 Hz, MM or MC DC to 200,000 Hz
Frequency Response at highest gain setting, -0.1 dB 3 DC to 4,000,000 Hz DC to 1,000,000 Hz (Model L)
DC to 400,000 Hz (Model H)
DC to 200,000 Hz, MM or MC DC to 40,000 Hz
Total Harmonic Distortion, 20 Hz to 20 kHz Less than 0.0001 % (Graph available soon) Less than 0.0001 % See Graph Less than 0.0003 % See Graph Less than 0.0007 %
Intermodulation Distortion (18.5:19 kHz mixed 1:1) Less than 0.0004 % (Graph available soon) Less than 0.0004 % See Graph Less than 0.003 % See Graph Less than 0.005 %
RIAA Compensation 4 Fully Balanced Fully Balanced

Subtract $1199 to omit
Single-ended internally

Subtract $249 to omit
Single-ended internally

Subtract $249 to omit
RIAA Accuracy ± 0.1 dB or better, 20 Hz - 20 kHz ± 0.1 dB or better, 20 Hz - 20 kHz ± 0.1 dB or better, 20 Hz - 20 kHz ± 0.1 dB or better, 20 Hz - 20 kHz
RIAA Accuracy Left - Right Channel Matching ± 0.02 dB or better, 20 Hz - 20 kHz ± 0.02 dB or better, 20 Hz - 20 kHz ± 0.02 dB or better, 20 Hz - 20 kHz ± 0.02 dB or better, 20 Hz - 20 kHz
Other Features Front panel Mono selector switch      
Dimensions 18.9" W x 6.2" H x 12.4" D 12" W x 2" H x 7" D

(15.1" W x 2.5" H x 6.6" D, Plus Model)
5" W x 3.7" H x 5.5" D 5" W x 2" H x 5.5" D
Shipping Weight 96 pounds 9 pounds
(14 pounds, Plus Model)
4 pounds 3 pounds
Warranty 5 years electronics, 3 years batteries, limited 5 years electronics, 3 years batteries, limited 3 years, limited 2 years, limited
Price Please see L20 product page $4998 (Seta L or H)
$6998 (Seta Plus L or H)
$2448 $1448
User Manual Download Available soon Seta Model L / H Seta Piccola Lino

Notes:
1. The preamplifer "Flat" outputs have 12 dB lower gain, taking advantage of the emphasized treble in the non-RIAA-compensated signal.
2. The Flat outputs are intended for use with Pure Vinyl software RIAA compensation. The RIAA outputs function the same as a conventional stand alone phono preamplifier.
3. Flat outputs using a test signal generator having a 5 ohm or lower output impedance (Thevenin equivalent impedance) typical of a low output moving-coil cartridge.
The frequency response of the Lino and Seta Piccola models will be greater at lower than maximum gain settings. For example, twice the specified bandwidth at 6 dB lower than the maximum gain setting.
4. The preamplifier prices include standard phono preamplifier RIAA outputs. Price would be lower by this amount if the preamplifier is ordered with "Flat" outputs only.

About Seta

Listening evaluations using a variety of reference systems and program material show that an important key to accurate reproduction of vinyl audio involves greatly increasing the signal bandwidth of the preamplifier front end (the first stage of amplification touching the signal from the phono cartridge).

Why? First of all, high quality phono cartridges are capable of reproducing signals well over two octaves above the audio frequency range.

While such signals are inaudible, the preamplifier also must work to amplify these signals, which are boosted over 20 dB above midrange levels (because of the standard vinyl treble pre-emphasis curve used in the mastering process). A preamplifier unable to handle out of band signals will distort in the ultrasonic region. This distortion will carry over into the audio range, affecting the reproduction of the midrange and treble.

Futhermore, the audibility of one of the most maligned deficiencies of vinyl, "pops and clicks," is a function of and can be exacerbated by the design of the preamplifier. The reason is that the transient signals caused by the stylus striking a scratch or foreign object in the groove have, in addition to large amplitude, a very fast risetime, and are unlike any musical signal. The fast risetime can cause slewing distortion in traditional narrow bandwidth or inexpensive phono preamplifiers, magnifying the audibility of pops and clicks. This nonlinear coloration from a less capable preamplifier is at least partially responsible for causing many music lovers to shun recordings in the vinyl medium! The Seta wide bandwidth design employs a fast-responding front end gain stage with a slew rate of over 500 volts per microsecond (Model L), making it immune to transient distortions induced by pops and clicks, minimizing their impact on the listening experience. (The slew rate of the Seta output is deliberately limited to avoid causing slew rate distortion in any following components.)

How much bandwidth is enough?

The rule of thumb for linear signal reproduction is ten times (an order of magnitude) greater than the signal of interest. With that criterion, the amplifier is able to linearly reproduce out of band signals, while preserving the integrity of the midrange and treble without the "haze" caused by, and characteristic of, ultrasonic intermodulation distortion. Going still further, extending the bandwidth by two orders of magnitude delivers a stunning improvement in three-dimensionality and imaging. This principle is continued by the Seta L20, which has a signal bandwidth three orders of magnitude (1000 times) that of audible frequencies.

Why don't more phono stages have ultra wide (megahertz) bandwidth? Why do some line stage preamplifiers have megahertz bandwidth? It's one thing to design a line stage preamplifier, and quite another to design a phono stage. The difference is the extreme amount of gain required in a phono stage - around 100 times (40 dB) greater than a typical line stage. A trade off exists between gain, signal bandwidth, noise and distortion. In most phono stages, the required high gain means that the other design parameters must be engineered more conservatively. This was the case until the introduction of our 5 megahertz bandwidth Seta Model L in 2007. The lower gain required for a line stage makes it easier to design with wide bandwidth. For instance, our special-purpose Buffer Amplifier products, introduced in 2012, are essentially simplified line stages - and have a 20 megahertz bandwidth - without resorting to the new (and much more expensive to implement) design methodologies employed in our 20 megahertz bandwidth Seta L20.

Surface Mount vs. Through-Hole Components

To dispel misinformation which we've seen on the Internet and in print advertising: surface mount components provide the shortest signal paths and highly optimized circuit layouts, with low stray inductance, low stray capacitance, low temperature coefficients, high stability, improved unit to unit consistency and consequently better performance than old-fashioned through-hole circuit components. Surface mount manufacturing is not strictly the outcome of short-sighted "value engineering" - it is the result of the never-ending quest for increased performance of electronic components and circuits; lower manufacturing costs are a welcome side effect. There are cheap surface mount components just as there are cheap through-hole components, both of which deliver inferior performance. However, the performance of all through-hole parts are eclipsed by the best surface mount components, as used in our preamplifiers. Further, certain types of high-performance circuits simply cannot be created with through-hole components, especially those requiring ultra wide bandwidth.

There is one specific exception where through-hole parts deliver better performance: high performance film capacitors. The solid organic polymer dielectric used in all high performance film capacitors cannot withstand the high temperatures encountered during surface mount manufacturing. In response, alternative high-temperature-compatible organic polymer dielectrics have been introduced, such as polyphenylene sulfide (PPS). We have evaluated these parts and have found them markedly inferior to other film capacitors, such as the metallized polypropylene type that we use for RIAA and filtering circuits. PPS has poor thermal stability, making it impossible to hand select PPS components for precision tuned circuits, because the values of PPS capacitors change too much when exposed to the heat from soldering. They also have inferior dielectric absorption and dissipation factor (causing a loss of definition and veiling) and DC leakage compared to metallized polypropylene - we have measured the DC leakage changing substantially depending on the atmospheric humidity! They are also not available in higher values, leading to less than optimal circuit designs (even if they otherwise matched the performance of other polymer film capacitors). Accordlngly, surface mount film capacitors (and only surface-mount film capacitors) are ill-suited to high performance audio.

Of course, as any electrical engineer who has worked with practical circuits knows, high performance through-hole film capacitors (partly because of being large-sized, through-hole type parts, but also because the permittivity of the dielectric material used decreases with frequency) cannot be used for critical (and essential) high frequency power supply bypassing - they become inductive at relatively low (several hundred kHz) frequencies. This is where MLCCs (multilayer inorganic dielectric capacitors - we'll use the "dirty word" here - ceramic; but rest assured that today's 21st century ceramic capacitors use exotic materials such as zirconium tin titanate / C0G and barium titanate / X7R that are definitely not "your father's ceramic capacitor") really shine, because of having exceptionally low inductance (and ESR, equivalent series resistance). This is a direct consequence of their miniaturized size, internally having hundreds of layers of electrodes separated by dielectric - an amazing feat of manufacturing achieved only in the last several years. On the other hand, inorganic dielectrics are definitely unsuitable for use directly within the audio signal path because of dielectric absorption, higher dissipation and their generally wider capacitance tolerance (tight tolerance is needed for precision filter circuits such as rumble filters or RIAA EQ), plus susceptibility to microphony (because the X7R dielectric used in the lowest inductance parts exhibits piezoelectric activity). However, these drawbacks are unimportant considerations for power supply bypassing, where low ESR, low inductance and small size are of paramount importance.

Feature Benefit
Ultra-wide linear signal bandwidth (-3 dB at 20 MHz, Seta L20; -3 dB at 5 MHz, Model L; -3 dB at 1 MHz, Piccola); Direct Coupled circuitry. No Capacitors in signal path Improved Smoothness, Clarity, Definition and 3-Dimensional Imaging
Fully Balanced, Complementary Circuitry Reduced Noise and Distortion
Minimum Signal Path Design Preserves Signal Integrity
Low Impedance AGM Internal Rechargeable Battery 50 Ampere, Deep Power Reserve Preserves Signal Dynamics
FET or Bipolar Hybrid Circuit Topology (Model H or Model L) Performance Tailored to MM or MC Cartridges
Video Bandwidth, Balanced Low Impedance Output Amplifier High Noise Immunity; Not Affected by Connected Equipment or Length of Output Interconnect

Seta preamplifier's hybrid, video - bandwidth amplifier modules are electronically and acoustically isolated and kept at a stable operating temperature and environment (constant humidity) by enclosing and sealing them in a block machined from a solid piece of oxygen-free high conductivity copper. Each module is carefully tested and characterized before and after being hermetically sealed in the copper block.   Seta preamplifier's hybrid, video - bandwidth amplifier modules are electronically and acoustically isolated and kept at a stable operating temperature and environment (constant humidity) by enclosing and sealing them in a block machined from a solid piece of oxygen-free high conductivity copper. Each module is carefully tested and characterized before and after being hermetically sealed in the copper block.
Seta Model L / H preamplifier's hybrid, video - bandwidth amplifier modules are electronically and acoustically isolated and kept at a stable operating temperature and environment (constant humidity) by enclosing and sealing them in a block machined from a solid piece of oxygen-free high conductivity copper. Each module is carefully tested and characterized before and after being hermetically sealed in the copper block.

Noise

Seta preamplifiers, besides (or should we say, despite?) providing the widest bandwidth of any phono preamplifiers available, also feature low noise that ranks among or better than the world's finest phono stages. Here is a comparison of measurements performed by Stereophile (including issue dates for verification) of the signal to noise ratio (SNR) of moving coil phono preamplifiers, including our Seta Model L. Higher numbers are better. The quietest are highlighted in boldface.

Phono Preamplifier (MC Input) Unweighted SNR A - Weighted SNR From SP Issue: Accolades
Channel D Seta Model L 59 dB* 67 dB* August 2010 Stereophile Class A Recommended Component
Boulder 1008 60 dB 64.75 dB July 2010 Stereophile Class A Recommended Component
Vitus Audio MP-P201 Masterpiece 53.6 dB 62.8 dB September 2010 Stereophile Class A+ Recommended Component
Nagra VPS not reported 61 dB September 2008 Stereophile Class A Recommended Component
Boulder 2008 not reported 49 dB July 2002 Stereophile Class A+ Recommended Component
*The signal to noise ratio has been improved in the year 2015 and later production by approximately 4 dB from the numbers shown above obtained from the August 2010 Stereophile review, and are reflected in our current published specifications, e.g., 71 dB A-Weighted SNR for the Seta Model L.

Measurements of distortion levels, bandwidth and RIAA accuracy are best gleaned from reading the associated reviews, but the Seta Model L ranks near the top, if not at the top of the list in this regard. For further confirmation, see John Atkinson's follow up review of the Model L (December 2013 Stereophile, download here) with additional highly favorable distortion and RIAA accuracy measurements. Note: In that report, John also made another measurement of the signal to noise ratio, but unfortunately had the Seta configured for single ended rather than balanced mode, resulting in diminished performance in the noise measurement!

Seta - Balanced Direct Coupled Ultra Wide Bandwidth Phono Preamplifiers
Seta - Balanced Direct Coupled Ultra Wide Bandwidth Phono Preamplifiers
Seta - Balanced Direct Coupled Ultra Wide Bandwidth Phono Preamplifiers

Seta Plus (available in natural anodized aluminum, or gorgeous red powder coat finish, as shown). Includes heavy, milled aluminum chassis and lower impedance battery power supply.


Circuit Design

The Seta front end circuitry is tailored to preserve the strengths of the characteristics of different cartridge types. A low noise, high impedance FET front-end is used in the Seta Model H for moving-magnet and other high output cartridges, while an ultra-fast, ultra low noise bipolar transistor front end is used in the Seta Model L for low impedance, low output moving coil cartridges.

The circuit topology is fully differential, balanced direct-coupled circuitry from input to output. The front-end active circuitry is surrounded on five sides by a sub-enclosure machined from a solid block of copper. This provides electronic and acoustical noise isolation plus thermal stabilization. Bare copper metal surfaces are coated with a clear lacquer to prevent oxidation (and to maintain their beautiful color).

Unlike many other preamplifier designs: the rated (-3 dB) bandwidth is independent of gain.

The Seta Piccola phono stage uses carefully selected, ultra low distortion, low noise ICs also in a fully balanced configuration with a bandwidth of 1 MHz (-3 dB).

All Seta products use 0.1 percent tolerance precision low noise metal film resistors in all critical areas.

Rechargeable Battery Power Supply

The low-impedance, internally located AGM rechargeable battery is capable of supplying 50 amperes of current, outperforming other types of batteries used in audio applications. The battery is conditioned and kept float-charged by a proprietary, uniquely designed rail balancing circuit, rather than use an "off the shelf" microprocessor based conditioning and monitoring circuit, which would introduce unwanted noise. Locating the battery inside the preamplifier chassis also insures that the battery is in the same electrical environment as the sensitive front-end circuitry, eliminating potential sources of noise pickup. The external charging supply is automatically disconnected when an input signal is detected.

Mechanical

All connectors are the best available, professional quality Neutrik gold contact XLR and WBT gold contact helical conductor wide bandwidth RCA (Model L / H). Pushbutton actuated, sealed gold contact small signal relays are used to change gain settings (four different gain settings, Seta Model L / H). A unique rear-panel rotary balance trim control with a precision 2 dB range provides for fine cartridge channel balancing (the trim setting is not affected by the overall gain).

Interior Close-up View of Seta, showing Solid Copper Front-End Circuitry Isolation Block   New Seta Model L / Model H Preamplifier Modules
Interior Close-up View of Seta, showing Solid Copper Front-End Circuitry Isolation Block (Left);
New Seta Model L / Model H Preamplifier Modules (Right)

Measurements

Of course, the "last word" in the evaluation of audio products should be done by using the best "measurement:" real-world, listening-based evaluation. However, we believe that careful measurements also are essential, if only to insure that the product you receive actually conforms to the designer's original vision and intent.

Seta preamplifiers incorporate many unique or unusual design features contributing to their high performance

  • Ultra low impedance AGM rechargeable batteries used as charge storage reservoir and power supply filter; proprietary, exclusive charging and maintenance circuitry specially designed by Channel D and proven, refined and used exclusively in our phono stage designs for over 5 years
  • State of the art, premium quality low - ESR polymer dielectric electrolytic and tantalum filter capacitors
  • Ultra precision (0.1% tolerance) metal film low noise 1206 / MELF surface mount resistors used throughout
  • Ultra low distortion, low impedance differential output stage with greater than 40 MHz signal bandwidth
  • RIAA Compensation Network with precision, hand matched components
  • True single ended outputs obtained by differential summing and balanced signal input for lowest possible noise (high common mode rejection) on single ended connections
  • All Channel D Seta preamplifier products feature a signal bandwidth of DC to 1 MHz (-3 dB) or greater


Seta Ultra Wide Bandwidth Direct Coupled Balanced Preamplifier Product Line

Seta Model L
For Low Output Moving Coil Cartridges
(Bipolar Hybrid, DC to 5 MHz bandwidth, < 0.001% THD 10 Hz - 40 kHz)

Buy
Seta Model H
For Moving Magnet Cartridges
(FET Hybrid, DC to 1 MHz bandwidth, < 0.007% THD 10 Hz - 40 kHz)

Buy
Seta Piccola
For Moving Magnet and Moving Coil Cartridges
(DC to 1 MHz bandwidth, < 0.001% THD 20 Hz - 20 kHz)

Buy
  • Delivers stunning improvements in sound staging, detail and 3-D imaging
  • Fully Balanced, Complementary Design from Input to Output; can be used with balanced or single ended turntables and other equipment
  • Pure Linear, Straight-Wire Signal Gain, designed to be used in conjunction with Pure Vinyl software and A/D Interface (for RIAA curve correction)
  • Software RIAA Correction eliminates the need for capacitors in the signal path
  • Circuitry Optimized For Cartridge Type (Bipolar for Seta Model L/MC; FET for Seta Model H/MM; Piccola uses high speed low noise monolithic circuitry)
  • Gain Settings (Seta Model L/H) are accessible from front panel
  • Load Settings (Seta Model L) accessible from rear panel
  • Solid copper shielding and temperature stabilization block (Seta Model L/H; Buffer)
  • Premium, precision components in signal path (0.1 % metal film resistors; metallized polypropylene film cartridge loading capacitors)
  • Rechargeable battery powered (low impedance AGM type, with output current capability of 50 amperes)
  • Designed and Assembled in U.S.A.

Seta Model L and Seta Model H (including Plus model)

Model L - Fully Balanced, Ultra Wide Bandwidth 5 MHz "Flat" Phono Preamplifier for Low Output / Low Impedance Moving Coil Cartridges; Low Impedance, Low Current-Noise Hybrid Bipolar Input; High Performance, Low Noise Internal AGM Battery Power Supply.
Model H - Fully Balanced, Ultra Wide Bandwidth 1 MHz "Flat" Phono Preamplifier for High Output / High Impedance Cartridges; High Impedance, Low Voltage-Noise Hybrid FET Input; High Performance, Low Noise Internal AGM Battery Power Supply

Seta Model L, Seta Model H
Seta Model H / L front; Model L rear view.

Specifications
Gain (*add 12 dB for Hardware RIAA Option): 43, 46, 49, 52 dB (Model L); 23, 26, 29, 32 dB (Model H)
Frequency Response (-3 dB) DC to over 5 MHz (Model L); DC to over 1 MHz (Model H); any gain setting
Seta Model H
Input Load Capacitance
Min. capacitance 10 pF balanced, 20 pF single-ended; factory configured for 160/170 pF; includes plug-in components for an additional 47, 100, 150 or 220 pF; Seta L/MC capacitance 12 pF
Seta Model H/MM
Max. Input Resistance
89 k ohms; factory configured at 47 k ohms; custom plug-in resistors also can be installed
Seta Model L
Max. Input Resistance
2 k ohms; rear panel rotary switches for selecting 25/50/100/150/200/500/1k ohms; custom value plug-in resistors also can be installed internally
Distortion < 0.001% (Model L/MC), < 0.007% (Model H/MM). 10 Hz to 40 kHz, with 600 Ohm or greater load
Inputs Neutrik Gold Pin XLR Balanced; RCA (Balanced; functions as single-ended to balanced adaptor)
Outputs Neutrik Gold Pin XLR Balanced
Output Impedance less than 40 ohms
RIAA Compensation Curve (with Hardware RIAA Correction Module) Accuracy ± 0.1 dB; *RIAA module option also adds 12 dB additional gain (at 1 kHz) and RCA (Single Ended) Output Connectors

Dimensions
Power Consumption less than 5 watts idle / float (Model L / H AGM Battery); less than 15 watts (AGM recharging)
Weight 6.5 pounds
Size 12" x 2" x 7" (W x H x D)


Seta Piccola Mk2

Fully Balanced, Ultra Wide Bandwidth 1 MHz "Flat" Phono Preamplifier for Moving Magnet and Low Output Moving Coil Cartridges; High Performance, Low Noise Internal AGM Battery Power Supply. RIAA RCA Outputs.



Seta Piccola Mk2

Specifications
Gain (*add 12 dB for Hardware RIAA Option): 43, 46, 49, 52, 55, 58 dB (MC); 23, 26, 29, 32 dB (MM)
Frequency Response (-3 dB) DC to over 1 MHz; any gain setting
Input Load Capacitance Min. capacitance 15 pF; jumper selectable 165 pF installed; includes plug-in components for 50, 60, 85, 115, 165, 200, 210, 235, 265, 315, 345, 385 and 500 pF
Maximum Input Resistance 47000 ohms MM, 2000 ohms MC; internal switches for other values (60, 70, 100, 140, 200 and 500 ohms) plus sockets for user installable resistors
Distortion < 0.001%, 20 Hz to 20 kHz, with 600 Ohm or greater load
Inputs Neutrik Gold Pin XLR Balanced (Single-ended to balanced adapters included)
Outputs Neutrik Gold Pin XLR Balanced
Output Impedance less than 40 ohms
RIAA Compensation Curve (with Hardware RIAA Correction Module) Accuracy ± 0.07 dB; *RIAA module option also adds 12 dB additional gain (at 1 kHz) and RCA (Single Ended) Output Connectors

Dimensions
Power Consumption Less than 3 watts idle / float; less than 5 watts operating
Weight 4.5 pounds
Size 5" x 3.7" x 5.5" (W x H x D)

*Note about Gain specifications: If you're accustomed to using conventional phonograph preamplifiers, the available Seta gain settings may seem somewhat lower than usual. However, they are tailored to using the Seta with Channel D Pure Vinyl's digital vinyl compensation curve. The required gain is about 10 to 12 dB less than needed in a conventional phono preamplifier, because the signal is provided to Pure Vinyl with treble emphasis (boost) intact. (For the technically knowledgeable: this turns out to be somewhat less than the maximum 20 dB correction of the RIAA compensation curve at 20 kHz, due to the frequency balance of most music.) For example, if you would normally use a preamplifier gain of 38 dB for a moving-magnet cartridge, then the proper setting on the Seta would be 26 dB. Likewise, the RIAA hardware compensation module provides an additional 12 dB of gain (at 1 kHz).


(Above) Seta Piccola Mk2 rear panel, RIAA outputs on RCA connectors

Seta RCM - RIAA Compensation Module

Seta RIAA Internal Correction: Included Internal Hardware RIAA Correction for Seta L20, Seta Model L, Seta Model H, Seta Piccola, Lino. Includes Balanced (Neutrik Gold Pin XLR) and Single Ended (WBT Nexgen Helical Contact RCA) RIAA Phono Outputs (L20, Model L / H; Seta Piccola uses high quality gold-plated chassis mount RCA connectors and is internally single-ended; Lino RIAA outputs are selectable Balanced or RCA). Can be used simultaneously with the Flat outputs, for independent all-analog monitoring/listening plus Flat output to external digital converter.

Internal RIAA Compensation Module, shown installed in Seta Model L
Internal RIAA Compensation Module, shown installed in Seta Model L.

Specifications
Output Impedance less than 40 ohms balanced, less than 20 ohms single ended
Frequency Response (-3 dB) DC to 12 MHz, balanced or single-ended outputs (Seta L20, L, H); DC to 1 MHz (Seta Piccola, Lino)
RIAA Accuracy Better than ± 0.1 dB, 10 Hz - 100 kHz
Channel Match better than ± 0.02 dB, 10 Hz - 100 kHz
Phase Deviation from RIAA Standard less than 1 degree, 20 Hz - 20 kHz
Gain at 1 kHz 12.0 dB
Harmonic Distortion (20 Hz - 20 kHz) less than 0.001%
Topology Fully complementary direct coupled wide-bandwidth balanced (differential) from input to output for high common mode noise rejection and low distortion. (Lino and Seta Piccola use a single-ended / unbalanced circuit.) Second order DC servo (primary time constant 10.3 seconds). Passive high frequency correction; premium, low distortion wide bandwidth FET based gain stage for active low frequency correction. Independent single ended (RCA) ground referenced and balanced outputs
Connectors Premium Neutrik gold pin XLR and WBT helical conductor gold-plated RCA
Components Precision (0.1 percent) metal film resistors; low dissipation factor metallized polypropylene and polystyrene capacitors, hand selected to match design within 0.1 percent tolerance; ultra low ESR power supply decoupling capacitors






Lino - Wide Bandwidth Low Noise Low Distortion Direct Coupled Balanced MC Preamplifier

Lino
For Low Output Moving Coil Cartridges

Buy

Seta Model L, Seta Model H

Lino front (with optional USB 192 kHz ADC / DAC) and rear view

Specifications
Gain 55, 58, 61, 64 dB (with Hardware RIAA Option; "Flat" outputs 12 db less)
Frequency Response (-3 dB) DC to over 200 kHz
Max. Input Resistance 2 k ohms (Balanced); internal switches for selecting 100, 200, 500, 2k ohms; custom value plug-in resistors also can be installed internally
Distortion < 0.002% 20 Hz to 20 kHz
Inputs Neutrik Gold Pin XLR Balanced; RCA (Balanced / Unbalanced; functions as single-ended to balanced adaptor)
Outputs Neutrik Gold Pin XLR Balanced; RCA Unbalanced
Output Impedance 100 ohms
RIAA Compensation Curve Accuracy ± 0.1 dB; *RIAA also adds 12 dB additional gain (at 1 kHz) and RCA (Single Ended) Output Connectors
Optional ADC / DAC USB Class 2 Compliant (driverless on Mac OS X 10.6.8 and later), 192 kHz / 24 Bit

Dimensions
Power Consumption less than 3 watts idle
Weight 0.5 pounds
Size 5" x 2" x 7" (W x H x D)

  • Delivers stunning improvements in sound staging, detail and 3-D imaging
  • Balanced; can be used with balanced or single ended turntables and other equipment
  • Pure Linear, Straight-Wire Signal Gain, designed to be used in conjunction with Pure Vinyl software and external A/D Interface (for RIAA curve correction). Internal ADC / DAC optional
  • Software RIAA Correction eliminates the need for capacitors in the signal path
  • Premium, precision components in signal path (0.1 % metal film resistors; metallized polypropylene film RIAA network capacitors)
  • Made in U.S.A.



Special Products: Seta DAC Buffer (Active Attenuator and Buffer Amplifier designed for Digital Playback Systems)

Seta Buffer Seta Piccola Buffer
Product Description Active DAC Buffer / Attenuator Active DAC Buffer / Attenuator
Application Line Level Signal Conditioning Line Level Signal Conditioning
Price $3499 $1599
Internal Low Noise AGM Rechargeable Battery Power Supply yes yes
Gain 1 Line Level Attenuator:
0, -6, -12, -18, -24, -30 dB
Line Level Attenuator:
0, -6, -12, -18, -24, -30 dB
Gain Adjustment Internal Switches Internal Switches
Balanced XLR Inputs yes yes
Balanced XLR Outputs yes yes
Single-Ended RCA Inputs With RCA to XLR Adapter With RCA to XLR Adapter
Single-Ended RCA Outputs yes yes
Bandwidth DC to 20 MHz (-3 dB) DC to 20 MHz (-3 dB)
Total Harmonic (20 - 20 kHz) and Intermodulation (19:20 kHz) Distortion Less than 0.0003 % Less than 0.0003 %
User Manual Download Seta Piccola Buffer
Seta Buffer
Line-Level Active DAC Buffer / Attenuator

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Reviews

"It's an understatement to say that I was impressed by the Seta Model L [...] It measured more like a piece of laboratory equipment than a typical high-end component, and sounded superb to boot." - John Atkinson, Stereophile December 2013 Click Here to Download a Copy of the Review

"...if my "legendary" Vendetta phono preamp ever gives up the ghost I could be very content using the Seta as its replacement." - Steven Stone, The Absolute Sound - December 2013 Click Here to Download a Copy of the Review

"CLASS A" RECOMMENDED COMPONENT (Editors' Top Picks - Phono Preamplifiers, Seta Model L) Stereophile - October 2010 (Class A Recommended Component as of the latest Recommended Components issue, April 2017)

EDITORS' CHOICE AWARDS (Seta Model L) The Absolute Sound - 2015 - 2017

"[The Seta Model L] is a quiet, remarkably neutral-sounding, extremely well-built phono preamplifier... [the Seta with Pure Vinyl's digital RIAA] was fundamentally accurate in terms of tonality and space, and its low- level resolution was remarkable."
Michael Fremer, Stereophile, August 2010 Full review

"A very linear circuit? [no intermodulation products in] the spectrum of the [Seta Model L's] flat output... no distortion harmonics can be seen above the noise floor, even when the load impedance is reduced to a punishing 600 ohms!"
John Atkinson, Stereophile, August 2010 Measurements