DENON PRA-1000B
* Made-to-order products
¥ 230,000 (around 1976)
Commentary
Tube bulb type control amplifier.
The PRA-1000B consists of an equalizer amplifier, boost amplifier, and buffer amplifier. You can use the PRA-1000B by inserting a tone control or filter amplifier as needed.
Model Rating
| Type | Tube type control amplifier |
| Input Sensitivity / Impedance | Phono1 : 2.5mV/50k Ω Phono2 : 2.5mV/30k Ω Tuner, Aux1/2, Tape1/2 : 250mV/200k Ω |
| Phono maximum allowable input | 600mV(1kHz) |
| RIAA deviation | 20 Hz ~ 20 kHz + 0. 3-0. 5 dB |
| Rated output | 1Vrms |
| Maximum power output | 75Vrms(1kHz) |
| Total harmonic distortion factor | 0.06% or Less (Output 5 V, 1 kHz) |
| Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (20 kHz) |
| Filter | Low : 25Hz/70Hz, -12dB/oct. High : 6kHz/10kHz, -12dB/oct. |
| Frequency response (aux in) | 8 Hz ~ 100 kHz + 0 -1.0 dB (Tone Defeat) 20 Hz ~ 20 kHz + 0 -1.0 dB (Tone Flat) |
| Signal-to-noise ratio | Phono : 71 dB (IHF, A Network) Tuner, Aux, Tape : 83 dB |
| Crosstalk (Tone Defeat Phono in - Line out) |
-90dB or less (1 kHz) -70dB or less (10 kHz) |
| Gain control | + 10 db, 0, -10dB |
| Tape monitor | 1 → 2, 2 → 1 |
| Headphone output level | 30 mW (8 Ω) |
| Power consumption | 85W |
| External dimensions | Width 410x Height 152x Depth 271 mm |
| Weight | 8.5kg |