Sony TA 1055A Vintage Amplifier

Model All silicon transistor · stereo Integrated AmplifierCircuit type Power Amplifier: Direct coupling / quasi-complimentary symmetry SEPP circuitPreamplifier: Monolithic IC using NF typeMicrophone amplifier: PNP-NPN two-stage direct connectionOutput (harmonic distortion factor 0.1%) Dynamic power (IHF, constant voltage supply method): 70 W (8 Ω) 90 W (4 Ω)Effective output1 kHz, both channels (distortion factor 0.5%): 23 W + 23 W (8 Ω) 27 W + 27 W (4 Ω)40 Hz to 20 kHz, both channels: 20 W + 20 W (8 Ω)Output band characteristic 10 Hz to 40 kHz (8 Ω, IHF)Harmonic Distortion Ratio 0.5% or less (at rated output) 0.2% or less (at 1 W output)Intermodulation distortion factor (60 Hz: 7 kHz = 4: 1) 0.5% or less (at rated output) 0.2% or less (at 1 W output)Dumping factor 22 (1 kHz, 8 Ω)Residual noise 0.25 μW or lessInput sensitivity / impedance Phono: 2.5 mV / 10 kΩ MIC: 1.8 mV / 47 kΩ Tuner, AUX, Tape 1, 2, Rec / PB (input section): 250 mV / 50 kΩMaximum allowable input Phono: 70 mVOutput level / Impedance Rec Out 1, 2: 250 mV / 13 kΩ Rec / PB (output part): 30 mV / 82 kΩ Speaker terminal compatible with 4 Ω to 16 ΩS / N ratio Phono: 70 dB (input 2.5 mV, B network) MIC: 65 dB (input 1.8 mV, B network) Tuner, Tape 1, 2, Rec / PB (input part): 90 dB (input 250 mV, A network)Frequency characteristic Phono: RIAA curve ± 1 dB MIC: 30 Hz to 20 kHz, +0 - 3 dB Tuner, AUX, Tape 1, 2, Rec / PB (Input): 20 Hz to 60 kHz, ± 3 dBTone control Bass: 100 Hz ± 10 dB Treble: 10 kHz ± 10 dBLoudness control 50 Hz + 10 dB, 10 kHz + 3.0 dBfilter High Filter: 5 kHz or more, 6 dB / oct (Volume - 30 dB)Used semiconductor Transistor: 24 diode: 9 IC: 1Power supply AC 100 V, 50 Hz / 60 Hzpower consumption 65 WExternal dimensions Width 416 × height 119 × depth 285 mmweight 6.1 kg1973 made location Mirpur -11, Near KFCregards saidur 01754594715