OTOMON LAB 417A preamp with phono stage ,with 300B tube as voltage regulator.

This is special order made preamp using 417A tube in output stage, phono stage use 396A tube. 300B tube is used as voltage regulator for a better sound. Input impedance is 100K, output impedance is 600ohm. Phono input impedance is 47K ohm.

Phono stage use CR type equalizer. Power supply and main part was separated to prevent hum or noise.

Very quiet and beautiful sound, sound stage is very wide opened.

Specification:

Response frequency: 10Hz ~ 70Khz
Hum level : 0.05mV
Input impedance: 100K ohm
Ouput impedance : 16ohm

All tubes are not included.