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.




Price: $4,500

The preamplifier is the control center of your system. This preamplifier is designed to provide the finest and most transparent acoustic performance available while increasing the value to our customers. Specifically, the new Sanders Preamplifier combines the performance and features of our previous Line Stage and Phono preamps into one.



  Click to enlarge

Our previous preamps (line stage and phono) were $4,000 each, for a total cost of $8,000 for our customers who needed a phono preamp.  Since both preamps are now combined, customers who need a full-function preamp can now save several thousand dollars as the new preamp sells for half the price of the previous two.

Additionally, more modern circuit design technology has reduced distortion and noise figures from those in the earlier preamps.  The styling has been redesigned to better match our amplifiers.  A video processor pass through also is included in the new preamp.  All the previous ergonomic and performance features of the earlier preamps have been retained.

The goal of a true audiophile grade preamplifier is to offer gain, switching, and other conveniences, while at the same time passing the original signal downstream without adding distortion, noise, or a sonic signature of its own.  The Sanders Preamp does exactly that but includes many ergonomic features for convenience and ease of use that are not available on even far more expensive preamps.

The levels of each individual input can be adjusted to get them all matched so that you don't get "blasted" or have to turn up the main level each time you switch sources.  A stereo/mono switch remains standard equipment.  The overall gain, individual gain between devices, and channel balance can be adjusted in precise, 1 dB increments.  Muting by remote control is standard.  A video readout makes it easy to monitor the levels.

Controls are available both by remote control and on the front panel.  Front panel controls are done through micro-touch electronic switches.  Internal switching is done by miniature, sealed, gold relays.  Conventional rotary volume controls have channel matching error of around 20%, which causes the left/right balance to shift as you change the level.  To solve this problem, some preamp manufacturers use discrete, precision resistors on a multi-step switch.



While this solves the channel tracking problem, they introduce new ones.  Specifically, they have very limited resolution due to too few steps (typically 31 steps of 2 dB each).  These "stepped attenuators" produce very annoying switching transients at each step.

The Sanders Preamp solves these problems by using the "volume control" knob to drive an optical comparitor circuit.  The optical circuit operates a microprocessor that controls an electronic gain system.  This controls the level using one hundred, one dB steps, with precision of greater than 0.1% between channels.

The microprocessor monitors the signal voltage and waits for it to cross the zero voltage point between waves before switching to the next level.  This prevents any switching transients.
The volume control knob has detents at each 1 dB point and it rotates continually.  So it as an infinite number of detents and you can feel each 1 dB change in level.

There is a digital display with beautiful, blue, light emitting diodes (LEDs).  The display continually shows the output level of the unit and switches automatically to show level differences between channels, when you adjust the balance, or when you adjust the input levels.  You no longer have to guess at the levels or try to see fine gradations on a knob to know the levels, since you can see them from several feet away.

Most components come with a remote control transmitter that only controls that particular component.  Therefore you end up adding that remote transmitter to the pile of remotes you have for all your other electronics.

Rather than contribute to "remote clutter", the Sanders Preamp comes with a programmable remote that can be used to operate all your components.  You will then no longer have to dig through a pile of remotes every time you want to adjust something in your audio/video system.

The phono preamp offers exceptional flexibility and features, including virtually all the features of the most expensive, dedicated phono preamps.  These include switchable gain for both moving magnet and moving coil cartridges, and user-adjustable cartridge loading for both resistance and capacitance so that users can match their cartridge manufacturer's specifications for optimum performance.  The phono circuit has the benefit of extremely low distortion and an ultra-quiet noise floor.


Click to enlarge 



Sanders Sound Systems Preamplifier Back

Click to enlarge


Electrical Specifications


  • Five unbalanced inputs at line level using RCA connectors.
  • One balanced input using XLR connectors.
  • One unbalanced, RCA phono input with switchable gain, adjustable input loading, and RIAA equalization.
  • One unbalanced video processor input with fixed level at unity gain for "pass-through" use.


  •  Two pair of adjustable, unbalanced, outputs at line level using RCA connectors
  • One pair of adjustable, balanced, outputs using XLR connectors (Pin 2 "hot")
  • One unbalanced, fixed level output at unity gain for recording using RCA connectors
  • All outputs may be used simultaneously

 Frequency Response

-3 dB at 5 Hz and 200 kHz


Greater than 100 dB below 1 volt reference


Less than 0.002% from 10 Hz to 40 KHz @ 5 volts peak into  600 ohms or higher, shunted by 1,000 pF or less

Output Impedance

50 ohms, non-reactive, balanced or single-ended

Phono Input Impedance  

User adjustable between 47,000 and 100 ohms.  Default  setting is 47,000 ohms

Phono Input Capacitance  

User adjustable between 50 pf and 1,200 pF.  Default setting is 50 pF.

Input Impedance

47 kohms, balanced or single-ended 


User adjustable up to 18 dB.  Default setting is +8 dB

 Maximum Output   

 10 volts peak


Greater than 70 dB from 20 Hz to 20 KHz 

Power Supply

Independently regulated with shielded toroidal transformer and 20,000 uF of capacitance

Power Consumption

10 watts


Voltage is user selectable for use world-wide



Weight and Dimensions


Net Weight:  8 pounds (3.6 KG)
Shipping Weight:  13 pounds  (5.9 KG)



17" wide x 2.5" tall x 10.5" deep (43cm x 6.35cm x 27cm)


Speakers and Electronics are manufactured in Conifer, Colorado.

The Right Amplifier for Maggie Owners


Magtech for Maggie Owners

More and more owners are discovering that the Magtech amplifier really makes their Maggie's sing!



Product Photos

For ease of transfering photos that are large in size, we have created an FTP site for you.

User:                photos
Password:         photos1!      (number 1 followed by exclamation point)

If you do not have an FTP client installed, you can use FileZilla which is easy and free

There are versions based upon your computer’s operating system


1. Double click on your FileZilla icon from your desktop. Once you have done so, you should see the following: 


















2. Select File and then Site Manager. 
3.  Enter this information:

Be sure to change LOGONTYPE from ANONYMOUS to NORMAL
User:                photos

Password:         photos1!

4.  Click connect. You are now connected to Sanders Sound Systems ftp account. The following window will appear: 















5. It automatically opens to the folder containing the photos.

6. From the left hand side of the FileZilla program, you will need to navigate to the folder on your computer where you would like to download the photos.

7. Highlight all of the files you wish to download and then DRAG them over to the folder on the left hand size of the FileZilla window where you want them to go.

8. The files will download instantly onto your computer. 

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

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