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Denon PRA-1000B

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Technic details

Specifications

Type:
Tube control amplifier
Input sensitivity / impedance:
Phono1 - 2.5mV / 50kΩ
Phono2 - 2.5mV / 30kΩ
Tuner, Aux1 / 2, Tape1 / 2 - 250mV / 200kΩ
Phono maximum allowable input:
600mV (1kHz)
RIAA deviation:
20Hz to 20kHz, +0.3 -0.5dB

Rated output:
1V rms
Maximum output:
75V rms (1kHz)
Total harmonic distortion:
0.06% or less (Output 5V, 1kHz)
[Tone control]
Bass:
±10dB (50Hz)
Treble:
±10dB (20kHz)
Filters:
Low - 25Hz / 70Hz, -12dB / oct.
High - 6kHz / 10kHz, -12dB / oct.
Frequency response (Aux in):
8Hz to 100 kHz, +0 -1dB (Tone Defeat)
20Hz to 20kHz, +0 -1dB (Tone Flat)
S / N ratio:
Phono - 71dB (IHF, A network)
Tuner, Aux, Tape - 83dB
Cross talk (Tone Defeat, Phono in to Line out):
-90dB or less (1kHz)
-70dB or less (10kHz)
Gain control:
+10 dB, 0, -10 dB
Tape monitor:
1 → 2, 2 → 1
Headphone output level:
30mW (8Ω)
Power consumption:
85W

Dimensions (W x H x D):
410 x 152 x 271mm
Weight:
8.5kg
Year:
1975

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