ONKYO Integra 931
¥ 23,200 (in the early 1970 s?)
¥ 30,000 (around 1972?)
Commentary
This is an upgraded stereo power amplifier based on the power amplifier part of Integra 725.
Distortion measures are taken for all frequencies, including those outside the audible band.
It is equipped with left and right independent volume, and the input sensitivity is two step switching between 1 V and 0.5 V.
Model Rating
| Type | Stereo power amplifier |
| Circuit system | D&D directly connected to all stages |
| Rated Output (1 kHz) | 22W/22W (8 Ω) |
| Dynamic Power (IHF) | 70W (8 Ω) |
| Total harmonic distortion rate (1 kHz) | 0.1% or Less (at Rated Output) 0.05% or Less (at 10W Output) |
| Frequency characteristic | 10 Hz to 80 kHz |
| Power Band With (IHF, 0.2%) | 10 Hz to 100 kHz -3dB |
| Signal-to-noise ratio (IHF A network) | 100 dB or more |
| Damping factor (DC ~ 20 kHz) | 60 |
| Load impedance | 4 Ω ~ 16 Ω |
| Input Sensitivity / Impedance (10 Hz to 50 kHz) | 1V/100k Ω |
| Gain | 22 db, 28 db |
| External dimensions | Width 130x Height 135x Depth 352 mm |
| Weight | 3.5kg |