HiFi 12AX7 Tube RIAA MM Phono Amplifier Board Base On EAR834 Amplifier Kit Amplifier PCB




Each PCB Size: 100*150*1.6MM    (1OZ copper, FR4 grade A PCB material)

Works voltage: 0-260VDC  above 10ma    (260V-280V is ok)
                      0-260VDC  above 10ma    (260V-280V is ok)
 
( Also can share same one Group 260V high voltage. the Current recommned above 20ma)

Filament voltage:  0-12.6VDC    above 0.8A

Tube model:  3pcs  12AX7  ( Note: the default price is not include this tubes)

This edition is base on UK EAR834  (MM amplification part) design,

Dual independent channel,

One point ground, no noise at the end.

This version is MM-RIAA amplifier

Gain: 1KHZ @ 48DB

 
Reminder: This is a MM phono amplifier (with large magnification),only can connect with MM phono,not is normal preamp or power amp!!!





The following schematic just show only one channel: