VICTOR CD4-1 - 400$
Victor CD4-30 - 300$

Аппарат великолепно работает в СТЕРЕО режиме за счёт высоких требований 4-ch / QUADro записи,
имеет развитую коммутацию для подключения нескольких устройств,
даёт редкую возможность прослушать квадро записи формата CD-4.

Disk modulator for demodulating the four channels, a CD-4 signal extracted in 4ch cartridge.
Each other discrete channels of four has been (independently), it has been designed so that the same sound quality in each channel.
I am equipped with noise-canceling switch and function switch, a 4-channel radar.

Model CD-4 de-modulator
Frequency characteristic 20Hz ~ 40kHz
Rated input 1.5mV
Nominal output level 0.3V
Input impedance 100kΩ
Output impedance 5kΩ
Separation adjustment ch1 ~ ch2 between ch3 ~ ch4 between
External dimensions 138 × depth 335mm height width 380 ×
Weight 6.5kg
Power 100В.