Sanders Magtech 500w stereo power amp
Special Price: SOLD
Price guide: RRP $13,250
Selling on behalf, a powerful, no nonsense Sander Magtech 500w stereo power amp, that will drive most any speaker even down to 1ohm!. It has been tested and given a clean bill of health and in very good condition.
The popularity and success of the original ESL - Electrostatic Amplifier for driving electrostatic speakers led to many requests for a companion amplifier that was specifically designed for driving conventional magnetic speakers. Two years in development, the Magtech amplifier is that amplifier.
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.
Dagogo review summary: The realism is outstanding although. Sonic Realism has many facets to it, one being dimensionality of instruments onstage; but it is always the shock factor in new experiences that gives the impression of superiority……. Norm Luttbeg
HiFi+ review summary: So, what struck me the most when listening to music with the Magtech? It was the groove. I was playing Led Zeppelin’s signature hit ‘Stairway to Heaven’ [Led Zep IV, Atlantic, 1971] John Bonham and John Paul Jones were backstopping the slow build from quiet folk styled beginning to driving rock and roll end with precise authority. Somewhere during the music, I began to understand Roger Sanders point about why a regulated power supply was so critical to the delivery of the music. As the sound continued its crescendo with Jimmy Page and Robert Plant coming into the fore the naturalness and authority of the presentation never wavered. Nothing remotely brittle or edgy. It was this more life-like sonic consistency that makes the Magtech amplifier stand out from the crowd. The stated watts per channel are real with plenty of headroom for peaks and dynamics…….. Eric NeffJul
DESIGN PHILOSOPHY
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.
Specs:
Power:
500 watts continuous per channel into an 8 ohm load
900 watts continuous per channel into a 4 ohm load
Bandwidth - DC through 100kHz
Class of Operation - Class AB
Input Impedance - 100K unbalanced, 1K balanced
Input voltage required for full output - 2.2 Volts
Noise - More than 110dB below rated output
Gain - 26dB
THD - Less than 0.01%
Damping Factor - Greater than 600 into an 8 ohm load
Voltage - Voltage is user selectable for use world-wide.
Weight - 25 Kgs
Dimensions - 43W x 15.2H x 40.6D cm
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