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Nikko A-300D



Nikko A-300D

Model Integrated amplifier
Music power (IHF) 45W (8Ω)
Effective output 16W/16W (8Ω)
Power response 30Hz ~ 20kHz-1dB (1% distortion)
Frequency characteristic 20Hz ~ 30kHz ± 1dB
Distortion 0.2% (at the time of an Output 1W)
Input sensitivity / impedance Phono1, 2:2.0 mV/50kΩ
Tuner: 240mV/100kΩ
Aux: 150mV/100kΩ
Tape moni: 220mV/50kΩ
S / N Phono: 60dB
Tuner, Aux, Tape: 70dB
Tone control Bass: ± 13dB (70Hz)
Treble: ± 13dB (10kHz)
Loudness +11 DB (70Hz), +7 dB (10kHz)
The semiconductor used 18: Transistor
Eight: Diodes
Power consumption (At no signal) 18W
(Max) 86W
Physical Dimensions 95 × height 300 × depth 215mm width
Weight 3.9kg




Comments

Re: Nikko A-300D

While employed by John Ruppen MD for Howland West Audio, as a service engineer, I must have worked on hundreds of these. of the original batches there was a problem IC in both driver circuits, on the 300D and 400D, this used to fail and during repair would be exchanged by a piggyback sandwitch pc board with discrete componants that replaced the IC's completely, this repair was 100% reliable, as NONE came back. Howland West imported and distributed Nikko, Dynaco, Micro Sekie Turntables and Lux/Luxman. Also Grado cartriges and styli, headphones and a selection of speakers. We did a yearly gig at the Audio Fair at Olympia, Myself being on the stand at several of them. In 1973 we had a service team of four, Brian Barnes was service manager Jack Cooper of Ambrose fame as reviewing engineer Jason King-Spooner and myself Tom Hall completing the teamI left in mid '74 so did Jason after me, poor Jack died in '77 I don't recall when Brian left. Howland West Ltd still continues today, but has nothing in common with its business strategies of back then. I'm not sure if John Ruppen MD is still with us or not, but he was a great chap to work for, although we did have a falling out before I left, not his fault tho'.

A little piece of history if anyone is interested?

Re: Nikko A-300D

Thanks for the memory. Very interesting. I've had a Nikko A-300D since 1977. I still use it every day. Never had a problem. I love the spare design.