This project is a tape head Pre-Amplifier circuit.
The circuit is built around a popular Sanyo’s stereo
head preamp IC LA3161. Low electrical signals from
the playback heads are fed to pins 1 and 8 of IC1
via DC decoupling capacitors, respectively.
Components between pins 2 and 3 and pins 6 and 7
provide adequate equalization to the signals for a
normal tape playback.
Power supply: 9 ~ 12 VDC @ 20 mA
upto 200 mW
Input Resistance - 100 KΩ (Typ),
Load Resistance - 10 KΩ (Typ)
Low noise, good
ripple rejection owing to the on-chip voltage
Berg pins for connecting power
supply, input and output
Power-On LED indicator
Four mounting holes of 3.2 mm each
dimensions 49 mm x 38 mm
PCB bottom layer