SONY TA-1120

Commentary

The first all-silicon transistor premain amplifier in Japan.

Silicon transistors, which are resistant to temperature and have good high-frequency characteristics, are used in preamplifiers and power amplifiers, and are guaranteed for life in catalogs.

The circuit uses a quasi complimentary service SEPPP OTL circuit.

Equipped with a lever-operated quick-access switch, you can select your regular Tuner and Phono1 at the touch of a button, or you can preset one of the other inputs and use the lever to select these three.
This allows unused inputs to be skipped and prevents unpleasant noise from being generated.

Equipped with low filter and high filter.

Equipped with 2-dB-step tone control.
There is also a tone control cancel switch that allows the tone control circuit to be skipped and flat regardless of the position of the knob.

Model Rating

Type	All-silicon transistor stereo premain amplifier
Circuit system	Quasi complimentary service SEPPP OTL circuit
Power Amplifier Unit
Output	Non-clip music Power : 160W (8 Ω, both channel operation) Music Power (IHFM Standard) : 60W + 60W ± 0.5 db (8 Ω) 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 (Rated Output) Within 0.07% (at 25W output) 0.05% or Less (at 500 mW Output) 20 Hz ~ 70 kHz : 0.5% or less (at rated output)
Cross modulation distortion factor	0.3% or Less (Rated Output, SMPTE Standard, 70 Hz : 7 kHz)
Frequency characteristic	10 Hz ~ 100 kHz + 0 -1dB at Rated Output
S/N ratio (IHFM standard Cross-circuit)	110 dB (ASA Standard Z24.3-1944 40 dB (A) curve with weights applied)
Input impedance	100k Ω or more
Damping factor	70 or More (1 kHz)
Sensitivity	1 V (at 50W output)
Preamplifier Section
Output	Preamplifier output : 1.5 V Rec output : 0.2 V
Distortion Factor (at 1.5 V output)	0.1% or Less (1 kHz) 0.1% or Less (30 Hz) 0.2% or Less (15 kHz)
Frequency characteristic	Tuner, AUX : 30 Hz to 100 kHz + 0 -2dB (use 30 Hz or less low-cut filter) Phono1, 2 : 30 Hz to 15 kHz ± 0.5 dB (flatness correction characteristic by RIAA equalizer) MIC : 30 Hz ~ 50 kHz + 0 -2dB Tape Head: 30 Hz to 15 kHz ± 0.5 dB (Flatness correction characteristics by NAB equalizer * Adjustable by ± 3 db at 10 khz
Sensitivity	Tuner, AUX : 200mV/100k Ω (adjustable with 250k Ω semi-fixed) Phono1 : 5mV/47k Ω Phono2 : 1mV/47k Ω Tape Head : 1mV/500k Ω (ideal for 4.5k Ω read head) MIC : 2mV/500k Ω
Tone control	Bass : 100 Hz ± 10 dB Treble : 10 kHz ± 10 dB (2 dB Step 11-Stage Switching)
Filter	Low Filter : 50 Hz or less, 12dB/oct. High Filter : 9 kHz or higher, 12dB/oct.
S/N ratio (IHFM standard)	AUX, Tuner : 90 dB or more Phono1 : 80 dB or more Phono2 : 70 dB or more Tape Head : 70 dB or more MIC : 65 dB or higher (measured with weights on the 40 dB (A) curve of ASA Standard Z24.3-1944)
<General>
Semiconductor used	Transistor (46 pcs) 2SC401 : 27 2SC293 : 3 2SC297 : 1 2SC299 : 5 2SD45A : 8 TX141 : 2 Diode (22 pcs) DS2M : 4 pcs FRU : 4 1T206 : 10 SV6 : 4 SCR2SF - 103 : 1
Pwer	100 VAC (Switchable to 117 V, 220 V, 240 V) ± 10%, 50Hz/60Hz
Power outlet	Power switch interlock : 2 systems Power switch not linked : 1 system
Power consumption	No signal : about 30W Rated output : approximately 200W
External dimensions	Width 400x Height 145x Depth 310 mm
Weight	Approximately 11 kg
Attachment	Short plug Pin plug Connection code Silicon cloth 5A fuse
Sold Separately	Eurasian Cheek Finish Wood Case TAC-1 (¥ 4,600) Mounting Bracket MB-5 (¥ 2,800)