Preamplificatore tubo stereo HIFI scheda PCB nudo base su circuito preamplificatore QUAD 22
This board Using 6Z4 rectifier,12AX7 as a signal amplifier tube. Note: this is a bare PCB. PCB size: 175MM 120MM. 1PCS PCB Board. The main line using QUAD-22 circuit,Sound thick, clean! Excellent musicality.