SONY TA-3120

Commentary

This power amplifier was developed at the same time as Japan's first all-silicon transistor stereo premain amplifier TA-1120.
The internal structure is the same as that of the main amplifier section of the TA-1120.

Equipped with SCR protection circuit.

Model Rating

Type	All-silicon transistor stereo power amplifier
Circuit system	Quasi complimentary service SEPPP OTL circuit
Output (IHF)	Non-clip music Power : 160W (8 Ω, both channel operation) Music Power (IHFM Standard) : 120W ± 0.5 dB (8 Ω, both channel operation) Rated output : 50W + 50W ± 0.5 db (8 Ω) 35W + 35W ± 0.5 db (16 Ω)
Strain Rate (IHFM Standard)	1kHz: 0.1% or Less (at Rated Output) 0.07% or Less (at 25W output) 0.05% or Less (at 500 mW Output) 20 Hz to 80 kHz : 0.5% or Less (Rated Output)
Cross modulation distortion factor	0.3% or Less (at Rated Output, 70 Hz : 7 kHz = 4 : 1, SMPTE Standard)
Frequency response (at rated output)	Normal : 30 Hz to 100 kHz + 0 -1dB Test : 10 Hz to 100 kHz + 0 -1dB
S/N ratio (IHFM standard Closed circuit)	110 dB (ASA Standard Z24.3-1944 40 dB (A) curve)
Input impedance	100k Ω or more
Damping factor	70 or more (at 1 kHz, 8 Ω speaker)
Sensitivity	1 V (at 50W output)
Back adjustment part	Level Adjust (Semi-fixed) Test/Normal (switch)
Input terminal	Input : 2 routes
Output terminal	Speakers : 2 pairs
Semiconductor used	Transistor (21) 2SC401 : 4 2SC293 : 2 2SC299 : 5 2SD45 : 8 TX141 : 2 Diode (21) DS2M : 4 pcs FR-1U : 2 1T206 : 10 SV6 : 4 2SF-103 (SCR) : 1
Pwer	100 VAC (Switchable to 117 V, 220 V, 240 V) ± 10%, 50Hz/60Hz
Power outlet	Linked with power switch : 2 systems Not linked with power switch : 1 system
Power consumption	No signal : about 10W Rated output : approximately 200W
External dimensions	Width 180x Height 145x Depth 445 mm
Weight	Approx. 8 kg
Attachment	2 Pin Plugs 1 fuse (5A) Polishing Cloth x1