Pioneer A-71

Pioneer A-717

Pioneer A-717V

1 9 8 7 1987
1 9 9 3 1993

Basically an M-90a with only one non-anodized honeycomb heatsink and a preamp section added, of course. And the same two cast-iron transformers, too.

Added, or upgraded, are Pioneer's staple Non-Switching circuit as nherited from the A-80, here in version III,
a "Direct Connection" version II which reduces internal wiring and the multiplication of contacts (the signal goes only through halfway of the chassis),
a "clean ground circuit" which isolates the power transformers and heatsinks from the chassis and a "direct" switch which connects the input directly to the power amp section.

Also non-resonant honeycomb feet, non-resonant honeycomb chassis plates, honeycomb reinforcement plates and copper-plated caps (but for the top).

Tagged with the Pioneer ELITE name in the USA but not elsewhere (same amp, though), the A-71 was an A-717 in Japan.

That version saw a 1988 version with added S-Video and composite terminals under the A-717V moniker ; the rec-out selector was replaced by the video/audio input selector.

Trouble-free and healthy 27kg amplifiers.

Pioneer A-71, image 1 Pioneer A-71, image 2 Pioneer A-71, image 3
Pioneer A-71 specifications
Title Value
Power output : 2x 120W (20Hz...20Khz ; 8 Ohm ; 0,003% THD)
THD : 0,003% (rated output ; 20Hz...20Khz ; 8 Ohm)
Inputs : 2,5mV / 50kOhm (MM)
0,2mV / 100 Ohm (MC)
150mV / 50kOhm (CD, TU, TA, AUX)
Max phono input : 200mV (MM ; 1Khz ; 0,008% THD)
19mV (MC ; 1Khz ; 0,008% THD)
Outputs : 150mV / 2,2kOhm (tape rec)
low impedance (phones)
A / B / A+B / OFF (speakers)
Frequency response : 20Hz...20Khz (±0,2dB ; MM)
20Hz...20Khz (±0,3dB ; MC)
1Hz...150Khz (0 / -3dB ; lines)
S/N ratio : 95dB (MM)
77dB (MC)
110dB (lines)
Bass control : ±8dB (100Hz)
Treble control : ±8dB (10Khz)
Subsonic filter : 12dB/octave @ 17Hz
Loudness switch : +5dB @ 100Hz & +3dB @ 10Khz
PC : 670W max.
Dimensions : 45,7 x 17,3 x 47,4cm
Weight : 27kg.
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