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Yamaha A-700

Stereo Integrated Amplifier (1983-84)

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Yamaha A-700

Specifications

Power output: 100 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.005%

Damping factor: 90

Input sensitivity: 0.16mV (MC), 2.5mV (MM), 150mV (line)

Signal to noise ratio: 76dB (MC), 92dB (MM), 106dB (line)

Channel separation: 70dB (MM), 65dB (line)

Output: 150mV (line)

Dimensions: 435 x 136 x 401.5mm

Weight: 11.2kg

Year: 1983

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Reviews

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rating
Reviewed Aug 06th, 2019 by Skibrain

The A700 is a very good amp with a great Phono section. Front switch for MM or MC cartridges. Specs are amazing, but that may be why depending on the speakers it sounds a little sterile or too clean. I'd like it to handle 4 ohms speakers, which it will but at what level of power and length of time. Manual says 6 Ohm-120Watts RMS and 8 ohms-100 watts RMS speakers.

rating
Reviewed May 23rd, 2019 by Bram76

I bought this at the Goodwill Outlet in Everett Washington in 2017 for like 20 bucks what an amazing amplifier.
This thing will make your speakers pound bass and sing ive hooked it to many different speakers and it doesn't matter what I hook it to, they all sound better than they do with anything else. I have several other Yamaha home theater receivers that sound pretty good and I've owned some Marantz gear and some Harman Kardon gear and I own a really nice Pioneer Elite vsx45tx and I own a Sony da7100es which when it came out was probably $3,000 Sony's top-of-the-line Flagship and it does sound really good but this old Yamaha made in 1985 in Japan smokes them all. I don't think anything else really sounds better except for some of the high powered audio gear made in Japan back in the 70s if you see one of these definitely buy it it is a very very good amplifier
It has the loudness control so you can roll back the volume level but increase the bass you can also use the subsonic filter to cut off the really low lows and it has a true Class A mode or a direct mode and it also has the optional phono MM and MC settings which is pretty rare

 

Comments

re: A-700

Hi everybody, just got one of these from my grandfather. Was hoping to restore it and return it back to him in much better shape. I can't seem to find the Power button/switch, even from Yamaha.

The original one fell off and was lost to time I guess. Anyone know where I can get one of these and I can reglue myself? It really is a great amp, even damn near 30 years after initial release.

Thanks

Dogger62160's picture

re: A-700

Hi does anyone know the cost of the 1984 Silver faced Yamaha A700 and the T1000
when new?

re: A-700

Sorry I didn't read the question properly and can't retract my reply about current market value now. I inherited my A-700 and had it reconditioned as it had some troubles. They are an extremely well-built high-end amp. However, I have read that a product was used to hold components in place during manufacture and this has been found to turn acidic over time and eat away at the circuit boards. This can be cleaned off and the board resealed to prevent further damage. Also, as they are old you will have to factor in the cost of recapping the Amp as caps drift and eventually fail over time. If you want to maintain the performance of these amps, you will need someone who really knows their components well and has a reputation for only using the highest quality components. It needs to be done well for the amp to retain its true high-end performance. They just don’t make amps this well anymore so it is well worth doing it properly. I think I paid around $200 to repair mine which was just under the online recommended market value. However, I have to say that it is hard to find someone willing to sell for the online recommended value which is why I am not sure of the going rate. What I have seen online seems unrealistically low to me and really, once it is brought up to original spec or beyond it would be hard to match this quality in new amps under $5k (perhaps more) IMO. Perhaps value is related to how long the amp can realistically last???

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