Audio Database


Pioneer A-616
64,800yen(1987 release)

Shortest-izing of a signal path, no vibrating and absent-resonance-izing, the stereo Integrated Amplifier that aimed at the improvement in the drive capacity of the speaker at the time of a low load intensity.

Shortest-ization of leading about of a signal path is attained in input block. Moreover, if a source direct switchpoint is turned ON, a volume and power amplifier link directly and a purer sound can be enjoyed.
And in the power amplifier block, it arranged along with the fluence of a signal and distance from a power-source part is shortest-ized.
Moreover, in the speaker selector block, a relay substrate and a speaker termination are linked directly and excessive leading about is reduced.

While rigidity has adopted everywhere the honeycomb form where it excelled in periodic damping highly and distributes and decreases an oscillation in the many orientations, the oscillating distorted noise is low stopped by making it high-rigidity-ize.
Moreover, the heat-dissipation effect excellent in considering it as a chimney type honeycomb heat sink has also been acquired.
Furthermore, the oscillation from the outside is suppressed by adopting honeycomb structure also as an insulator.

It was considered as the balance structure which lessened the mechanical stress of the volume main unit, and the floating structure for suppressing the influence of an oscillation to a min is adopted as a volume.

The non switching circuit TypeII which expanded the area of switching distorted zero further is adopted.
This has improved the nonlinearity of thermal distortion or an output stage greatly.

The NF-CR type is adopted as a Phono equalizer.

In order to prevent a break-in of power-source line noise, the oxygen-free-high-conductivity-copper very-thick power cord of a polar attached indicator is adopted.

The speaker terminal of the vice type which performs a current supply source with few losses is adopted.

The fuse for audios focused on a tone quality, the rotary knob of aluminum Naked material shaving appearance, etc. are adopted.

An Remote-switch

Rating of a mode
Form Stereo Integrated Amplifier
Output power
(Both channel drive, 20Hz - 20kHz)
120W+120W (4 ohm, 0.008%)
100W+100W (6 ohm, 0.005%)
90W+90W (8 ohm, 0.005%)
Input sensitivity/impedance Phono man month: 2.5mV / 50kohm
Phono MC: 0.2mV/100 ohms
compact disk, Tuner, Line, Tape:150mV /, 50kohm
Maximum permissible input (1kHz, 0.008%) Phono MM:200mV
Phono MC:19mV
Frequency characteristic Phono man month: 20Hz-20kHz±0.2dB
Phono MC: 20Hz-20kHz±0.3dB
compact disk, Tuner, Line, and Tape:1Hz-150kHz+0 -3 dB
S/N ratio (IHF, A network)
Short circuit
Phono man month: 89dB (2.5mV o'clock)
Phono MC: 71dB (0.25mV o'clock)
compact disk, Tuner, Line, DAT/Tape1, 2:108dB
Supply voltage AC100V, 50Hz/60Hz
AC outlet Power-switch interlock: Two lines (150W)
Power-switch un-interlocking.: One line (100W)
Power consumption (Electrical Appliance and Material Control Law) 220W
Dimensions Width 420x height 162x depth of 435mm
Weight 14.4kg