Audio Database


Technics SU-9200
98,000yen(around the 1975 time)

The control center which aimed at the correspondence to a broad cartridge by the capacitance change circuitry etc.

It can switch not only about a part of an equalizer circuitry resisted (resistor) but about capacitance. This pulls out the performance of a cartridge and a play in the outstanding property is possible. Resistance can be switched in three steps and capacitance can be switched by a two-step.
Moreover, the Input-sensitivity regulating function is also carried in Phono2.

The power source constant-voltage-ized by the high power-source utilization factor of an output stage and the high voltage of }42V has realized the allowable input of 520mVrms.

The constant-voltage regulated power supply supplies the voltage stabilized also in the transition of the primaryAC line voltage, and has eliminated the interference through a power source.

The output stage consists of differential-amplification circuitries which used the low noise PNP transistor for the first rank, and the output stage has three-step hardwired-connection composition which suppressed the occurrence of crossover distortion or switching distortion by the perfect complimentary SEPP circuit.

NF type tone control of 11 contact rotary switch type is carried.
Circuitry serves as a three-step direct coupling system which has a differential amplification in the first rank and has an SEPP circuit of a perfect complimentary Class-A operation in an output stage like an equalizer. Moreover, in the turnover frequency, each bass and high temperature serve as a two-step change.
Furthermore, the defeet switchpoint is also carried.

The switchpoint type attenuator of 26 steps is carried so that exact volume control can be performed.

The active row / high light filter of -12dB /, and oct are carried.
A row/high A two-step conditioningregulation is possible respectively.

The muting circuit which prevents the shocking sound at the time of power-source on/off is carried.

Two tapes monitor circuitries which can be dubbed mutually are carried.


Rating of a mode
Form Stereo control amplifier
An Output voltage/impedance Rate: 1V/500 ohm
Maxima: 10V/500 ohm
Input sensitivity/impedance Phono1:2mV/25kohm, 50kohm, 100kohm
2:2-10mV of Phono(es) / 25kohm, 50kohm, 100kohm
Tuner, Aux1, 2:100mV / 47kohm
Phono maximum permissible input 520mV (rms, 1kHz)
THD 0.05%
SN ratio Phono:70dB
Tuner, Aux: 90dB
Frequency characteristic Phono:RIAA standard curve }0.25dB
Aux: 7Hz-110kHz+3 -0dB
Tapes monitors 1 and 2 Playback: 100mV / 47kohm
Rec out: 100mV/500 ohms
Tone control Bass: }7.5dB (50Hz)
Treble: }7.5dB (20kHz)
Turnover frequency Bass: 125Hz, 500Hz
Treble: 2kHz, 8kHz
A low filter 15Hz-12dB / oct
30Hz-12dB / oct
A high filter 10kHz-12dB / oct
15kHz-12dB / oct
Muting -20dB
Power source AC100V, 50Hz/60Hz
Power consumption 9W
Dimensions Width 450x height 173x depth of 266.5mm
Weight 6.8kg