ONKYO Integra A-550
¥ 48,000 (around the early 1970 s?)
Commentary
A pre-main amplifier equipped with a microphone terminal with dedicated volume and a tape connection terminal capable of microphone mixing.
It can also be used as matrix 4 ch.
Model Rating
| Type | Pre-main amplifier |
| Power Amplifier Unit | |
| Circuit system | D&D directly connected to all stages |
| Rated Output (8 Ω, 1 kHz) | 20W+20W 25W/25W |
| Dynamic Power (IFF8 Ω) | 60W |
| Total harmonic distortion rate (1 kHz) | 0.1% or Less (at Rated Output) 0.05% or Less (at 10W Output) |
| Power Band With (IHF, -3dB, THD 0.2%) |
10 Hz to 20 kHz |
| Signal-to-noise ratio (IHF A network) | 100 dB or more |
| Damping Factor (DC ~ 20 kHz, 8 Ω) | 40 |
| Load impedance | 4 Ω ~ 16 Ω |
| Rated input voltage / impedance (10 Hz to 50 kHz) | 1V/100k Ω |
| Preamplifier Section | |
| Input Sensitivity / Impedance | Phono : 2.5mV/50k Ω MIC : 10mV/50k Ω Tuner, AUX, Play : 200mV/50k Ω |
| RIAA deviation | Within ± 1 dB |
| Maximum Allowable Input (1kHz/10kHz, Input Sensitivity 2.4 mV) | RMS:100mV/380mV P-P:280mV/1.05V |
| S/N (IHF A network) | Phono1, 2 : 65 dB Tuner, AUX, Play : 85 dB |
| Tone Control (2 db Step Type) | Bass : ± 10 dB (100 Hz) Treble : ± 10 dB (10 kHz) |
| Filter | Low : 40 Hz, 6dB/oct. |
| <General> | |
| External dimensions | Width 398x Height 129x Depth 303 mm |
| Weight | 8.5kg |