SONY TA-1070
¥ 44,800 (around 1975)
Commentary
Stereo pre-main amplifier with audio IC.
The amplifier section uses a direct-coupling type differential-amplified 2 power supply and quasi complimentary service circuit.
The equalizer amplifier uses a low-noise IC developed specifically for audio applications.
Equipped with a microphone mixing mechanism with built-in PNP-NPN2-stage direct connection amplifier for microphone mixing.
Equipped with slide-type tone control.
Model Rating
Type | Stereo pre-main amplifier |
Power Amplifier Unit | |
Circuit system | Direct coupling quasi complimentary service symmetric SEPP circuit |
Dynamic Power (IHF) | 70W (8 Ω) |
Effective output (both channel drive) | 23W + 23W (8 ω, 1 kHz) 20W + 20W (8 Ω, 40 Hz to 20 kHz) |
Output Bandwidth Characteristics (IHF) | 10 Hz to 40 kHz |
Harmonic distortion factor | 0.5% or Less (Rating) 0.2% or Less (at 1W) |
Cross modulation distortion factor (60Hz:7kHz=4:1) |
0.5% or Less (Rating) 0.2% or Less (at 1W) |
Damping factor | 22 or More (1 kHz, 8 Ω) |
Preamplifier Section | |
Phono input | Phono1, 2 : 2.5mV/47k Ω |
Phono maximum allowable input | Phono1, 2 : 70 mV |
PhonoSN ratio | Phono1, 2 : 70 dB or more (input 2.5 mV, B network) |
Output Level / Impedance | Rec out1, 2 : 250mV/13k Ω |
Loudness control (Volume-30dB) |
+10dB(50Hz) +3dB(10kHz) |
Tone control | Bass : ± 10 dB (100 Hz) Treble : ± 10 dB (10 kHz) |
Filter | High : 5 kHz or higher, 6dB/oct. |
<General> | |
Power outlet | Power switch interlock : 2 systems Power switch not linked : 1 system Total 500W |
Power consumption | 65W |
External dimensions | Width 416x Height 120x Depth 285 mm |
Weight | 6.1kg |