Denon PMA-850 Integrated Amplifier / Denon TU-850 Tuner

Here we have a vintage pairing of a Denon PMA-850 amplifier and TU-850 tuner. These classically styled units are fully working and in fair cosmetic condition with a number of marks - please see our images. They will be suitably packaged along with our standard three month warranty.
Denon Said….
Denon PMA-850 Integrated Amplifier
A new series of Denon amplifiers, incorporating a wide dynamic range, low noise MC amplifier. It reaches the highest class in the most fundamental characteristic of amplifiers both in distortion factor and S/N separation. By coupling all stages with a pure complementary circuit from MC amplifier to power amplifier using both PNP, NPN transistors, an ultra-low distortion rate of 85 W + 85 W was achieved.
A DC power amplifier placing importance on a quick build up characteristic by incorporating a new amplifying element. Distortion factor less than 0.01% (20 Hz - 20 kHz).
Toroidal core power transformer which has an independent coil for left and right channels for exceptional regulation.
Employment of an ultra-low noise transistor permits a high S/N ratio, head amplifier for MC type cartridge (74 dB IHF-A), and equalizer amplifier (89 dB IHF-A).
Provided with direct couple switch for direct connection of equalizer amplifier and power amplifier.
A unique design of two tone colour, imparting a sense of high class structural grace.
Specifications:
Type: All stage pure complementary push pull system DC circuit
Rated Output (Both channels driven): 85 Wrms at 20 Hz to 20 kHz (THD 0.01% at 8 Ω); 110 Wrms at 1 kHz (THD at 0.05% 4 Ω)
Total Harmonic Distortion: Less than 0.01% (at rated output 20 Hz to 20 kHz)
Intermodulation Distortion 60 Hz/7 kHz = 4/1: Less than 0.02% (at equivalent rated output); Less than 0.01% (at 1 watt output)
Power Bandwidth: 5 Hz to 100 kHz (IHF. THD 0.1% )
Transmission Characteristic: DC to 100 kHz + 0 dB, - 1 dB (at 1 watt output)
Input Sensitivity: 1 Vrms
Input Impedance: 50 kOhm
Output Impedance: less than 0.16 ohm
Signal to Noise Ratio: 122 dB
Output Terminals
Speaker: A & B, 4 to 16 ohm load; A+ B, 8 to 16 ohm load
Headphone: for Stereo Headphone
Pre Amplifier Output
Max. Output: 25 V (at 50 kOhm)
Rated Output: 1 V
Total Harmonic Distortion: 0.003% (at 3 V output)
Equalizer Amplifier Output
Max. Output: 25 V (THD 0.01% at 50 kOhm load)
Rated Output: 320 mV
Input Sensitivity/Input Impedance
Phono 1,2 (MM): 2.5 mV/50 kOhm
Phono 3 (MC): 0.37 mV (cartridge impedance 40 Ohm)
Tuner, Aux, Tape: 320 mV/40 kOhm
Maximum Allowable Input
Phono MM: 200 mV 1 kHz
Phono MC: 30 mV (1 kHz, 40 Ohm)
RIAA Deviation: less than ± 0.2 dB (20 Hz to 20 kHz)
Signal to Noise Ratio (IHF. A network)
Phono MM: Better than 89 dB (input terminal shorted)
Phono MC: Better than 74 dB (input terminal 40 Ohm)
Tuner, Tape, Aux: Better than 105 dB ( input terminal shorted)
Aux-Pre Out Frequency Response Tone Defeat: 5 Hz to 100 kHz + 0 dB, - 1 dB
Tone Control Section Variable Range
Bass: 100 Hz ± 8 dB
Treble: 10 kHz ± 8 dB
Filter Characteristic
Subsonic: 20 Hz, 12 dB/oct
High Cut: 9 kHz, 12 dB/oct
Loudness Control Characteristic
Low range: 100 Hz + 7 dB
High range: 10 kHz + 6 dB
Muting Level: - 20 dB
Power Source: AC 220 V, 50 Hz
Power Consumption: 600 W (at max. output power)
Dimensions: 434 (W) x 400 (D) x 164 (H) mm
Weight: 17.0 kg
Denon TU-850 Tuner
5 gang variable capacitor, a complete front end incorporating MOSFETs
Low distortion, high selectivity 2 system IF Section
PLL IC stereo demodulation circuit
Unique design and high precision tuning system
Incorporates a recording level check
Equipped 2 large size multi functioning level metres capable of measuring amplifier output
Specifications:
FM Tuning Range: 88.0 to 108 MHz
Sensitivity: 1.7 µV
Effective Selectivity: 65 dB
Signal to Noise Ratio: 84 dB
Total Harmonic Distortion: 0.05% (Mono); 0.08% (Stereo)
Capture Ratio: 0.8 dB
AM Suppression: 65 dB
Image Rejection: 120 dB
IF Rejection: 110 dB
Separation: 50 dB (1 kHz)
Frequency response: 20 Hz to 15 kHz, + 0.2 dB, - 1 dB
Power Source: 220 V/240 V 50/60 Hz
Power Consumption: 13 W
Dimensions: 434 (W) x 400 (D) x 164 (H) mm
Weight: 8.9 kg

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