M-6200 is a succession model of M-6000 and ourflagship of class-AB monophonic power amplifier.
We’ve already launched another flagship class-A
monophonic power amplifier A-200 as the 40 year
anniversary model.
M-6200 inherits superb technologies from A-200.
And it is the newest model of M-6000 series.

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The size of M-6200 is as same as the former model M6000.
However M-6200 is 1.7kg heavier than M-6000 asinternal structure is reinforced. (Power transformer size,
number of speaker terminals, rectangular wire coil etc. )2

M-6200 has an analog power meter and it has peak-holdand hold time control function.
2 pairs of large speaker terminals are equipped.
They are useful for bi-wiring connection with loudspeaker.

3Strong power supply by large Troidal transformer with
newly designed heat-radiation fins and a pair of
48,000μF capacitors are installed.

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The continuous average output power is 150W into 8ohm load.
However M-6200 has bigger headroom for maximum
output power. It is 211W into 8 ohm and 1250W into 1ohm.
It means M-6200 is super high power amplifier.

5M-6200 has the lowest noise performance in the 42years’ history of Accuphase power amplifier.
Our first stereo power amplifier P-300 launched in 1973
had 40μV of noise voltage.
42 years later, M-6200 achieves 11μV at last.
This is less than half of the former model M-6000.

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The output noise is reduced by some technologies.
Optimizing gain allocation of 2 amplifier blocks which isconstructed with instrumentation amplifier.
Enhancing gain of balanced input amplifier block from 4times to 12.6 times.
Output noise voltage is ideally reduced to 49%.

7M-6200 has the highest Damping-Factor specification in
the 42 years’ history of Accuphase power amplifier.
DF of P-300 in 1973 was 60.
After 42 years, M-6200 achieves 1000 of DF.
This is 2 times higher than the former model M-6000.
This is the guaranteed specification. Actually, M-6200
has more than 1,500 of DF.
*Damping-Factor, DF:
A index of speaker driving ability. Higher Damping-Factor
amplifier has higher speaker driving ability.
DF = 8 ohm / Output-impedance

8Output impedance is decreased by the multiple
connected power amplifiers with 8-parallel push-pullarrangement of high power transistors.
Output impedance is decreased to 50%

9Remote-sensing is the technique to obtain lower output
impedance of amplifier by negative feedback with signal
sensing from close-up the speaker terminals.
Balanced Remote-sensing is the technique to make
impedance even lower by GND sensing and the negative
feedback of GND level with adding the signal sensing.
Not only Damping-factor but also Total Harmonic
Distortion and Intermodulation Distortion are improved byBalanced Remote-sensing.

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Mechanical relay is the most popular component for
speaker protection. It does not have good reliability andlow contact resistance either.
M-6200 uses MOS-FET switch instead of mechanicalrelay for speaker protection.
Damping-Factor, reliability and sound quality are
improved by the MOS-FET switch.
Moreover, very low resistance components which arechosen for M-6200 are large speaker terminal,
rectangular wire coil and so on.
Making signal path thick and short attains low impedance.

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