2x PASS A5 Class A Single-Ended HIFI Amplifier Board IRF244 IRF9610 60W+60W AMP

Parameters
Work: class A
Size: 136MM*78.6MM, plate thickness 2.0MM.
Voltage: DC+-35V
Power: 60W (8 ohms)
The pairing accuracy of the differential input field tube IRF9610 is 0.2%, and the midpoint output voltage (+-50MV) is within

About pairing accuracy: 0.2% accuracy means that the VGS voltage is accurate to 3 digits after the decimal point, 0.3% is also, but it is a little larger than the 0.2% error, and 5% accuracy means that the VGS voltage is accurate to 2 digits after the decimal point.

PASS A5 original factory specifications:
Cain               20dB balanced,20 or 26dB balanced
Freq Response      -0.5dB at 2 Hz,-2 dB at 100KHz
Power Output       60 watts/ch 8 ohms
Maximum OUTput     30 volts,8 amps
Distortion(1KHz)   1% @ 60 watts,8 ohms

                   3% @ 90 watts,4 ohms
Input lmpedance    10 Kohm unbalanced
 
                   25 Kohm balanced differential
Damping factor     50 nominal
Output Noise       600uV unweighted
DC offset          < 100 mv
Power Consumption  300 watts
Temperature        25 degrees C above ambient
Dimensions         12" W x 12"
Shipping Weight    60lb


Note: Single-ended Class A fever is terrifying! (The quiescent current of each channel is 1.8A!) Please do not power on the test without installing a radiator or a small radiator! So as not to burn the tube! The recommended radiator weight is 5KG per channel. 

Package
1pair PASS A5 Class A Single-Ended HIFI Amplifier Board IRF244 IRF9610 60W+60W AMP