MODEL 10 Electrostatic Speaker


Roger Sanders built his first ESL (Electrostatic Loudspeaker) in 1972. He quickly appreciated the superior performance that a massless electrostatic offered over conventional magnetic speakers with regards to low distortion, lack of resonances, and incredible detail. But their problems of limited output, inability to produce deep powerful bass, and unreliability have kept him busy improving them over the last 30+ years.


The result of this lifetime of work is that Sanders Sound Systems ESLs are the only ones to have solved all the problems and limitations of ESLs. Roger's "Ultrastat" panels will play at ear-bleeding levels, cannot be arced, do not use or need protective circuitry, are immune to humidity, dust, and dirt, and do not need or use dust covers. They can be driven by multi-thousand watt amplifiers without damage. They are more rugged than conventional magnetic drivers. They do not fail and are so robust that they come with a lifetime warranty.





The Model 10 electrostatic speaker is Sanders' flag ship. It is the best speaker Roger knows how to make after 30+ years of research, design, and testing of electrostatic speaker. This is simply a no-compromise electrostatic speaker that solves all the problems that plague other electrostatic speakers.


The Model 10 will play at concert hall levels and can be used with multi-thousand watt amplifiers without arcing or damage. No protective circuitry is used or needed. It will reproduce the full dynamic range of any music without strain. Deep powerful bass is assured with the use of a transmission line woofer system. The woofer system has been specifically designed to stop and start faster than other woofers so that perfect integration with a massless ESL finally is achieved.

Passive crossovers are not used as they are seriously flawed and degrade the performance of any speaker. Expensive electronic crossovers and biamplification are used to achieve spectacular levels of performance.

This speaker practically disappears into the room, both sonically and visually. This helps with the age old problem of the speakers taking over the room. This integrated speaker system will be a worthy anchor of a reference-level high-end audio system of the highest performance possible.

 Our Latest Design is our Model 10e Electrostatic Speaker

The Absolute Sound’s 2016 Golden Ear Award Recipient

 golden ear award august 2016 cover




Price $17,000

This price includes:

  • Electrostatic Speakers with 1) aluminum bass driver and 2) revised transmission line
  • Magtech Amplifier
  • New LMS (Loudspeaker Management System) includes digital crossover with a Room Correction System, Digital Signal Processor, and Real Time Analyzer

DDD, Walnut 10 glass screen




















Sanders Sound Systems has been producing the most advanced and sophisticated speakers available for many years. We do not compromise. We use only the best technology, which includes electrostatic midrange/treble, transmission line bass, digital electronic crossovers with electronic time alignment, and biamplification using the unique, voltage-regulated, Magtech amplifier.

However, a truly State-of-the-Art loudspeaker must also include an RCS (Room Correction System) since even a perfect loudspeaker will have its frequency response degraded by the room/speaker interaction and bass resonances produced by room dimensions. Any speaker that does not use an RCS is simply not performing to its full potential.

DDD, Cherry 10 corner



Additionally, a S.O.T.A. speaker needs a DSP (Digital Signal Processor) so that the user can tailor the speaker's frequency response to compensate for deficiencies in recordings and to best match his personal preferences in how his speaker system should sound.

An S.O.T.A. speaker needs an RTA (Real Time Analyzer) so that the user can actually measure the frequency response of his speakers and room. Only then can he have the information needed to actually know how to adjust the frequency response of his system -- instead of just guessing and trying to optimize it "by ear."



 When all these features are combined with a modern, digital crossover, the resulting component is called an LMS (Loudspeaker Management System). Unfortunately, there has been no comprehensive, simple to operate, self-contained, practical, and automated LMS available until recently.

Sanders Sound Systems has finally developed the first, truly S.O.T.A. speaker using all the technology and features available in an LMS in the new Model 10e speaker system. The Model 10e does not require an outboard computer to operate, has an automated RCS, includes an independent RTA, and makes it possible for the owner to infinitely tailor the frequency response of the audio system to whatever degree he feels necessary.

When these advanced electronic features are combined in an electrostatic loudspeaker with transmission line woofer system, the result must be heard to be believed.

The Model 10e speaker is now available for immediate delivery. The price is only $17,000, which includes electrostatic speakers, aluminum transmission line woofer systems, the new LMS, and a Magtech amplifier that can be used for powering either the panels or the woofers.

This is truly a State-of-the-Art loudspeaker system that has no peer. Try it using our 30-day, risk-free, in-home trial, which applies to customers everywhere in the world.

 Sanders Sound hits the Sweet Spot - AudiogoN

"Roger Sanders, inventor of the curved electrostatic loudspeaker, will make you rethink everything you always thought you knew about stats. He sure did (rethink everything) to the point of abandoning his own invention for a contradictory philosophy. His logic is irrefutable, his speakers are infallible, and his electronics are unstoppable. Check out this video for a crash course on electrostatic myths and mating." - AudiogoN


 A major part of his work was devoted to dealing with the issue of high frequency "beaming" in large, planar loudspeakers. To deal with this issue, he invented the free-standing, curved, electrostatic panel. This made it possible to widely-disperse the high frequencies from a large ESL. He published this invention in Speaker Builder Magazine in 1980. The Martin Logan company adopted his technique in their ESLs.

Roger expected that his wide-dispersion, curved panels would perform better than narrow-dispersion, planar speakers. But he discovered that the curved panel was inferior to a planer one with respect to transient response, imaging, frequency response, speaker placement, and output. These problems caused by wide-dispersion speakers spraying their sound all over the room instead of being directed at the listener. As a result, in a wide-dispersion speaker, the listener hears the room with all its confused and delayed reflections instead of the superb sound available directly from a planar ESL. Roger won't compromise the quality of the sound by using his wide-dispersion design, so he abandoned it in favor of planar ESLs. The sound from his planar speakers are superior to all others with regard to transient response, 3-dimensional imaging, and frequency response.

Full-range, crossoverless ESLs are widely believed to be the "holy grail" of loudspeakers. In theory, using a single drive to reproduce the entire audio range, without the problems introduced by crossovers, would be ideal. Roger has built many such speakers. But the laws of physics cannot be circumvented. A full-range ESL simply cannot produce deep, powerful bass or have generally high output and full dynamic range.

Sanders ESL Panel

Roger spent 17 years developing woofer systems that would blend seamlessly with a massless ESL to produce outstanding bass and end the frustrating limitations of full-range ESLs. His well-designed, hybrid systems are far superior to a full-range, crossoverless ESL.

While building and selling full-range ESLs is easier and less costly than a hybrid, Roger won't compromise. Therefore all Sanders speakers are hybrids.
Crossovers are a major limitation in conventional speakers. The passive crossovers typically used are seriously flawed and cannot be used if you want a speaker with the highest possible performance. Electronic crossovers and bi-amplified operation are far superior to passive crossover systems and are absolutely essential for spectacular speaker performance.  Therefore, all Sanders' speakers come with electronic crossovers and bi-amplification.




To eliminate the usual customer complaint about having to buy two amplifiers to operate bi-amped speakers, Sanders supplies a Magtech amplifier as part of each Model 10 speaker system. The customer then only has to provide a single amplifier of his choice just as they would for any conventional speaker system.

These amplifiers are not cheap, underpowered, or Class D switching amplifiers. They are multi-hundred watt, Class AB amplifiers that are very expensive, offer the finest in performance, come in beautiful chassis, and will drive the speakers with full dynamic range at realistic, concert hall levels.

When a speaker system is put in a room, it will interact with the room and this will have adverse effects on the sound. Even a "perfect" speaker system will be degraded by the room. It therefore is essential for all speakers to be adjustable to compensate for room effects. The electronic crossovers used in Roger's speaker systems have extensive controls to allow the user to adjust the speaker to compensate for the flaws in his listening room.

This adjustability means that the user can make the speakers sound almost any way they wish. It is no longer necessary to be "stuck" with the particular sound of a room/speaker combination as is the case with conventional speakers. If you don't like what you hear with Sander's electrostatic speakers, you can adjust them so that they sound the way you like.


In summary, Sanders' speakers use the finest technology and design possible.

No compromise is made to either to reduce cost or sacrifice any aspect of speaker performance.   The combination of electrostatic mids/highs, transmission line woofers, and fully adjustable electronic crossovers makes it possible finally to have a speaker system that can do it all without compromise.



 Features of our Model 10 speakers

  • Perfect Insulation
  • The amplifier cannot damage the Ultrastat panel
  • No protective circuitry required
  • Panel is arc-proof
  • Extremely rugged and durable
  • Immune to dust, dirt, humidity, insects, pet fur, and foreign objects
  • Higher sensitivity (94 dB)
  • Highest precision - made with computerized diamond routing equipment
  • Greater percentage of open area and visual transparency
  • More attractive appearance than perforated metal designs
  • Voltage is user selectable for use world-wide
  • Highly efficient operation permits the electronics to be left on continually without concern for electricity usage


Specifications Model 10


Electrical Specifications


94 dB

ESL Power Handling

Unlimited for any amplifier intended for domestic use

Bass Driver


Bass Design

Transmission Line

Crossover Frequency

User adjustable
Factory settings 172 Hz, 48 dB/octave slopes,  Linkwitz-Riley filter

Frequency Response

20 Hz. to 27 KHz. +/- 2 dB

Magtech Amplifier Power

500 watts RMS per channel into an 8 ohm load
900 watts RMS per channel into a 4ohm load

Both Balanced and Unbalanced Input / Output Connections


Weight and Dimensions

Speaker Net Weight (assembled)

Model 10e

90 pounds (40.8kg)

Speaker Dimensions

15" W x 18"D x 69" H (38cm x 45cm x 175 cm)

Shipping Weight 5 boxes

Model 10e

Total shipping weight 309 lbs (140 kg)

ESL Panel Size

15" x 42" (38cm x 106.7cm)

Magtech Amplifier Weight     

55 pounds  (25 Kgs)

Magtech Amplifier Dimensions

17" wide x 5.5" tall x 16" deep (43cm x 14cm x 40.6cm)

Options to complete your system

Amplifier Options

ESL ($4,500)

The first amplifier specifically designed to drive these unusual speakers. You can use this amp on either the bass or the panels.

Magtech ($5,500)

Although this amp was designed to drive magnetic speakers, it has all the power to drive ESL's flawlessly, You can also use this on either the bass or the panels.


ESL Speakers White Paper

UltraStat Panel White Paper

Transmission Line White Paper

Dispersion White Paper


Two wood finishes available:

Speaker cherry panelSpeaker walnut panel










Shown on left is a Model 10 in Natural Cherry & on right is a Model 11 in Natural Walnut


See how the Speaker Cabinets are handcrafted by Local Artisan


Speakers and Electronics are manufactured in Conifer, Colorado.

Contact Us




Sanders Sound Systems Contact Us

Sanders Sound Systems

12054 Deer Trail Road
Conifer, CO 80433


Roger Sanders    

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Price List


• We sell Direct World-Wide (along with select dealers)

• Prices apply World-Wide

• 30 Day In-Home Risk Free Trial

• We are so confident in the design and build quality of our products, that we offer a Lifetime Warranty.

Electrostatic Speakers Model 10e $17,000
Amplifiers ESL Stereo $  4,500
  ESL Mono $  9,000 pair
  Magtech Stereo $  5,500
  Magtech Mono $  11,000 pair
Preamplifier Combined Line Stage & Phono  $  4,500
EROS Upgrade Kit Innersound EROS Panel and Crossover upgrade kit $  3,000

30 Day In-Home Trial

Our 30-day, in-home, risk-free trial works very simply and easily.  We will ship you any equipment that you wish.  You use it in your own home to listen to your familiar music, in your own listening room, with your own associated audio components for up to 30 days.

If you are not satisfied with the equipment for any reason, we insist you return it as we only want and have happy customers.   You can relax when working with us knowing that you won't get stuck with anything you don't like.

Sanders Sound Systems Electrostatic Speakers and Amplifiers In Home Risk Free TrialSanders Sound Systems Model 10 Electrostatic Speakers in cherry

This is a much better way to audition equipment than going to a dealer's showroom where you listen in a strange environment for only a few minutes.  You can only really get to know audio equipment by living with it for at least several days in your own home where you can use your own familiar equipment and listening room and have plenty of time to listen to much of your music collection.

Our equipment is modular so it can be handled by one person and shipped by UPS directly to your door.  No trucking firms, palletized shipments, lift gates, or truck docks are involved and you need not be home to accept delivery.


Shipping time is about one week to most anywhere in the world.   Tracking is available so you can follow your shipment and will know exactly when it will arrive.


Magtech Monoblock Amplifier


Price: $11,000 Pair

with a linear, voltage regulator

The Sanders Sound Systems Magtech amp is now available as a Monoblock power amplifier. Performance is similar to the Magtech amplifier with the exception of dramatically increased power output capability! As with the Sanders Sound Systems Magtech amplifier, the Magtech Monoblock offers superb build quality, superlative sonics with extremely high output capability.
Sanders Sound Systems Magtech Monoblock Amplifier Silver



Magnetic speakers differ from electrostatic speakers in one fundamental way -- they require massive amounts of current and power.  This causes the power supply voltages in an amplifier to change dramatically (typically by 30%) between idle and full power.

Electronics have their lowest distortion and optimum performance at a specific design voltage.  If the voltage varies, the amplifier's performance will suffer.

An additional problem in amplifiers is that they require bias to eliminate crossover notch distortion and determine their class of operation.  The bias will vary as the voltage does, which will further reduce performance.

An amplifier's voltage will fluctuate wildly as dynamic music is played.  This causes the amplifier's distortion and bias to vary constantly and fail to meet its full performance potential.

As if all these problems are not enough, as an amplifier's voltage sags under load, the power it can deliver is greatly reduced.  If the voltage would remain stable, the amplifier could produce much more power.  Since most audiophile speaker systems require several hundred watts of power to avoid clipping and compression of the dynamic range, power is extremely important.



All quality, line-level electronics use voltage regulation in their power supplies to produce a stable voltage, regardless of load or the mains voltage.  Audiophiles would not consider using a source component that did not have regulated power supplies.  So why use amplifiers with unregulated supplies?

The main problem is heat.  Amplifiers operate at much higher voltages and currents than line level source components.  These higher voltages and currents forces conventional regulator designs to waste large amounts of energy, which wastes expensive electricity and causes the amplifier to get very hot.

 Also, many regulator designs radiate RF (Radio Frequency) energy when switching high currents and voltages.  This RF gets into the amplifier's electronics and can cause instability, oscillation, and noise.  As a result of these problems, modern power amplifiers do not use regulated power supplies and fail to take advantage of the benefits available from doing so.

Sanders has solved these problems by developing a voltage regulator that is essentially 100% efficient.  There is no heat dissipated by the regulator system.  There is no high-power/high-voltage switching that causes heat generation or RF problems.

The regulator in the Magtech amplifier maintains a stable voltage regardless of load or reasonable changes in the line voltage feeding the amplifier.  It runs stone cold, produces zero RF energy, and is simple and reliable. 

Unlike other amplifiers, the distortion in the Magtech amplifier is virtually unchanged regardless of power level.  The bias is stable regardless of load.

The regulator makes it possible to obtain a 50% increase in power over the same amplifier operated unregulated.  In its stereo form, the Magtech will deliver 1600 watts/channel into an 8 ohm load and 2000 watts/channel into a 4 ohm load. 

The Magtech is built into the same chassis as the ESL Amp, so it is compact enough (17" wide, 5-1/2" tall, 14" deep) to place on a shelf or into a cabinet.  It is also light enough (54 pounds) to be picked up.  Like the ESL amp, it runs very cool and may be left on continually without concern for power usage.

The Magtech amplifier also uses the same advanced technology that makes the ESL amp able to drive the most difficult loads without performance-degrading, protective circuitry.  The Magtech amplifier features a linear voltage regulator.  The result is a compact, yet extremely powerful amplifier that is ideally suited to driving the most difficult magnetic speakers.

Sanders Sound Systems Magtech Monoblock Amplifer Back




Electrical Specifications

Power (Monoblock Version)

1600 watts RMS into an 8 ohm load
2000 watts RMS into a 4 ohm load


DC through 100kHz

Class of Operation  

Class AB

Input Impedance

100K unbalanced, 1K balanced


Input voltage required for full output

2.2 Volts


Nore than 110dB below rated output



32 dB


Less than 0.01%


Damping Factor

Greater than 600 into an 8 ohm load


Voltage is user selectable for use world-wide.


Weight and Dimensions


55 pounds  (25 Kgs)


17" wide x 5.5" tall x 16" deep (43cm x 14cm x 40.6cm)


 Speakers and Electronics are manufactured in Conifer, Colorado.


We sell Direct World-Wide  (along with select dealers) - Prices apply World-Wide - 30 Day In-Home Risk Free Trial 

We are so confident in the design and build quality of our products, that we offer a

Sanders Sound Systems Lifetime Warranty

All Rights Reserved 2018 Sanders Sound Systems