Audio Database


Lo-D HCA-7500
60,000yen(one-set, around the 1978 time)

Control amplifier which adopted the cartridge loading selector which pulls out the performance of a cartridge.

The equalizer amplifier has a first rank low-noise transistor and 3 steps of constant current drive bipolar push pull hardwired-connection 5 stone composition. Moreover, tone control amplifier has 3 steps of first rank FET differential electric-current drive bipolar pushpull hardwired-connection 6 stone composition.

Functionalities, such as a cartridge loading switching, a low filter, a high filter, a tone defeat, a turnover, and a muting, are carried.

The carrying handle which can be mounted on Japanese-Industrial-Standard specification rack is attached.

Rating of a mode
Form Control amplifier
Input sensitivity/impedance Phono: 2mV/100 ohm, 10kohm, 50kohm, 100kohm/100pF, 200pF, 300pF, 400pF
Tuner, AUX, Tape Play:100mV/50kohm
Phono maximum permissible input 350mV
Output voltage Tape Rec Out:100mV
THD 0.005 or less
Frequency characteristic Phono: 20Hz - 20000Hz, ±0.2dB
Crosstalk 70dB
Tone control Bass: 50Hz, 100Hz, ±10dB
(Turnover frequency: 150Hz, 300Hz)
Treble: 10kHz, 20kHz, ±10dB
(Turnover frequency: 3kHz, 6kHz)
SN ratio Phono:87dB
Tuner, AUX, Tape Play: 100dB
Power consumption 8W
Dimensions Width 480x height 166x depth of 397mm
Weight 7kg