Stereo Integrated Amplifier (1975-77)
V-Fet is the acronym for the newly developed vertical type field effect power transistors used in the TA-4650 amplifier.
A V-Fet has extremely low output impedance and excellent high power capability, delivering an output current proportional to input voltages and assuring virtually distortion free amplification.
Use of the V-Fets in the power output stage results in a quality of reproduction hitherto not available to audiophiles.
Power output: 30 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 100kHz
Total harmonic distortion: 0.05%
Damping factor: 45
Input sensitivity: 2.5mV (MM), 150mV (line)
Signal to noise ratio: 70dB (MM), 90dB (line)
Output: 150mV (line), 17mV (DIN), 1V (Pre out)
Speaker load impedance: 4Ω (minimum)
Semiconductors: 6 x VFET, 4 x FET, 36 x transistors, 26 x diodes
Dimensions: 460 x 168 x 323mm
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Reviewed Mar 07th, 2015 by ravenman
Typical SONY quality and innovation from that era, for VFETs, very reliable and cold, amplifier driving my modern high-end speakers and sounds fantastic with external PRE-AMP. Sound is very detailed, warm, slow without technical transistors sound even with class A
Reviewed Mar 30th, 2012 by cgutz
Love my old Sony VFET TA 4650. Bought it in 1980, still using it in my primary system.