Denon POA-8000

1 9 8 1 1981
1 9 8 4 1984

Extremely rare monoblocks which were scarcely distributed outside Japan.

Inside are Real Bias and Super Stability non-Feedback circuits.

Real Bias is another of the many semi/simili/pseudo-Class-A systems : here the bias current is fed slightly ahead of the signal current so that power is delivered only on signal demand.

Super Stability non-Feedback eliminates transient distortion by comparing signal before the 1st stage and after the output stage with a "distortion eliminator circuit" that keeps 0V reference as 0V throughout without phase correction cicuits.

The 8000's pre-driver circuit is a low-noise FET, direct DC-servo with a differential current mirror/cascode bootstrap output predriver with strong amplifying capability.

The POA-8000 was meant as absolute-above-the-POA-3000 bestseller ; it was partnered by the similiarily designed PRA-6000 preamplifier and replaced by the much more successful (and much cheaper) POA-7700, POA-6600 and POA-4400 monoblocks.

Despite receiving Stereo Sound's "Best Product" and "State of the Art" awards, the POA-8000 proved to be not stable at all and this may explain why it sold rather poorly - click the USER button below !

More about the POA-8000 can be seen at the indispensable

Denon POA-8000, image 1 Denon POA-8000, image 2 Denon POA-8000, image 3
Denon POA-8000 specifications
Title Value
Power : 1x 320W (8 Ohm, max.)
1x 200W (8 Ohm, 20Hz...20Khz)
THD : < 0,003% (20Hz...20Khz)
IMD : < 0,005% (rated output)
Damping factor : 200 (1Khz)
Output impedance : 0,1 Ohm (1Khz)
S/N ratio : > 120dB (IHF-A)
Slew rate : > 380V/µV
Power bandwidth : 1Hz...200Khz (+0 / -3dB)
Frequency response : 10Hz...100Khz (± 3dB)
Subsonic filter : 6dB/octave below 16Hz
Peak indicators : -50...+5dB (8dB = 200W / 8 Ohm)
PC : 820W max.
Dimensions : 31 x 18,8 x 46,2cm
Weight : 22kg
List price : 700,000¥ (one pair)
Production run : about 1000 (= 2x 500 pairs)
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