SANSUI AU-3300 Integrated Stereo Amplifier 38 + 38 Watts RMS Vintage 1975 JAPAN Good Look

Original from the Japanese market, it works on 100 volts, is completely restored and works perfectly at 100% - For shipments to Europeus countries it is supplied with a transformer to work on 220 volts

SANSUI AU-3300

¥ 39,800 (released in 1975)

This pre-main amplifier is based on the concept of focusing on sound quality, with power and sound quality adjustment function.

All stages are directly connected OCL circuit with ± 2 power supply system without harmful coupling condenser.

In addition, the differential amplifier, which is the core of this circuit, uses dual transistors with uniform characteristics and excellent stability, and achieves highly stable operation even against DC fluctuations.

Power transistors of the same polarity (NPN-NPN and PNP-PNP) are connected to the complimentary service stage, and pure output system is adopted.

The equalizer circuit uses a PNP-NPN2-stage direct-coupled circuit that combines a low-noise transistor and carefully selected equalizer elements.

The tone control section uses a 2-stage direct-coupled tone amplifier with carefully selected transistors and a CR-type tone control circuit with highly accurate elements. The knob uses a Klix/Klukš top type that can be adjusted in 10 stages each.

Equipped with a microphone mixing circuit with a microphone level adjustment function.

Mixed sound can be output from the recording terminal.

Equipped with two speaker outputs.

An all-push button type one touch selector is installed for input switching.

Click noise generated at switch switching is reduced by using ± 2 power supply.

It is equipped with a protection circuit that combines an electronic circuit and a relay.

Features include loudness control, high-cut and low-cut filters, -20dB audio muting, and a stereo / mono mode switch.

Type Pre-main amplifier

Effective power 35W + 35W (8 Ω, both channel operation, 40 Hz to 20 kHz)

38W + 38W (8 Ω, both channel operation, 1 kHz)

40W + 40W (8 Ω, single-channel operation, 1 kHz)

Music power 140W (4 Ω, 1 kHz)

Total harmonic distortion factor Not more than 0.15%

Intermodulation Distortion Factor (70 Hz : 7 kHz = 4 : 1, SMPTE) 0.2% or Less (Rated Output)

Power Band With (IHF) 10 Hz ~ 40 kHz (8 Ω)

Frequency Response (at 1W) 10 Hz ~ 40 kHz + 0.5 -1.5 dB

RIAA deviation (30 Hz to 15 kHz) ± 0.5 dB

Damping factor 50 (8 Ω)

Input Sensitivity / Impedance Phono : 2.5mV/50k Ω

Mic : 2.5mv/10k Ω

Tuner, Aux, Tape Monitor : 130mV/50k Ω

Phono maximum allowable input 230 mv (1 khz, THD 0.2% or less)

Output Voltage (1 kHz) Tape Rec(Pin):100mV

Channel Separation (1 kHz) Phono : 60 dB or more

Tuner, Aux, Tape rec : 65 dB or higher

Hum and noise Phono : 75 dB or more

Mic : 65 dB or more

Aux, Tuner, Tape Monitor : 90 dB or higher

Tone control Bass : ± 12 dB (50 Hz)

Treble : ± 12 dB (15 kHz)

Loudness (at Volume-30dB) + 10 dB at 50 Hz, + 8 dB at 10 kHz

High filter -3dB (7 kHz), 6dB/oct.

Low filter -3dB (100 Hz), 6dB/oct.

Muting -20dB

Power consumption 76W (Rating)

210W maximum

External dimensions Width 400x Height 120x Depth 240 mm

Weight 6.3kg