description：
PRT-06A preamp is reference the famous MATISSE preamp Circuit , sound is excellent!! Especially the low frequency performance is very good.
PCB size: 100*177*1.6MM FR4
Power supply requirements: 0-220VAC*40mA, 0-15VAC@1A
Gain: about 8 times.
Output Impedance: 600ohm
SNR: 94dB;
Frequency response: 110Hz-50KHz (-0.5DB);
Input sensitivity：150mv
Distortion: ≤1%.
package：1* PRT06A Tube preamplifier board finished board without tube