E834 RIAA MM Tube phono stage amplifier bare PCB base on EAR834 Circuit
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: this link is for one bare PCB. not include any Components.
The following schematic just show one channel: