Technics SU-A700 MK 3
Not much is documented about the Technics SU-A700 MK 3. No production years, original price or physical dimensions survive in the record. Nearly everything known comes from a single detailed review. That review describes a serious, well-engineered amp with a few real talking points.
The SU-A700 MK 3 is rated at 92 watts per channel into 4 ohms. It measured 0.01% distortion at 85 watts, which is better than its specification. Technics fitted an AA-class power stage built around field-effect transistors. The R-core power transformer was chosen for minimal parasitic magnetic radiation. The chassis is anti-vibration, and the capacitors are Master-series electrolytics. The latter three were borrowed from the earlier version of the 700. The tone control is disconnectable and gives ±8.5 dB at 100 Hz and 10 kHz. The supplied remote handles up to 35 functions. There is no loudness circuit, which was Technics' usual practice of the era.
- Power: 92 W/ch into 4 ohms
- Distortion: 0.01% at 85 W
- Tone control: disconnectable, ±8.5 dB at 100 Hz and 10 kHz
- Remote control: up to 35 functions
- Output stage: AA class, field-effect transistors
- No loudness circuit
The review's listening impressions are generally favorable. The amplifier handled difficult musical passages of all kinds without strain. On Pink Floyd's Dark Side of the Moon on vinyl, the MM phono stage showed good quality. The sound was confidently detailed, with a slight lack of sharpness at the very top. With modern sources, the reviewer's impression was of an almost perfectly executed powerful amplifier with a properly sorted power supply. With classical material it seemed almost too much for a house. Beethoven quartets presented violins somewhat larger than life.
All of the above rests on that one review source. Beyond it, the SU-A700 MK 3 remains an obscure and largely undocumented model.
Similar items on eBay
No exact Technics SU-A700 MK 3 listings are live right now — these searches show current Technics and similar vintage audio gear on eBay:
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.