Ive had this great amp in my system for years and has served me well,serviced and checked over last year with a clean bill of health.
the first of the official ES amps according to the vintage knob site. http://www.thevintageknob.org/sony-TA-F700ES.html
Lots of info on the web about this amp,its a stunner and weighs a ton!
Very good phono stage for MM and MC.
£350 collection from Brighton, demo no problem too.
Specifications
Power output: 105 watts per channel into 8Ω (stereo)
Frequency response: 2Hz to 200kHz
Total harmonic distortion: 0.004%
Damping factor: 100
Input sensitivity: 2.5mV (MM), 150mV (line)
Signal to noise ratio: 84dB (MM), 105dB (line)
Output: 150mV (line)
Speaker load impedance: 4Ω (minimum)
Dimensions: 430 x 160 x 436mm
Weight: 18.3kg
Year: 1987