Product details:Basically faithful to the classic PassAm circuitThe main filter capacitor is upgraded to a custom 2200ouF large capacitor.Keep the original design midpoint trimmer circuit and replace it with a close fixed resistor when leaving the factory to avoid the slight noise caused by the oxidation of the adjustable potentiometer contacts several years later.The differential input transistor uses a special matching board to make the matching accuracy reach 100% within 1%.The IRFP240 power transistor also uses a special matching board to ensure a matching accuracy of 2%-3%.Two channels of audio input are designed, which are switched by the front panel switch, and the input selection is switched by signal relay.Independent upc1237 speaker protection system for each channel.Integrated volume control potentiometer.Integrates high quality headphone output.200W custom ring transformer.ALPS potentiometer.The best quality melaleuca cake coupling.
Specifications:
Maximum distortion output power: 20W*2
Headphone output power: 400mW/600 ohms, 1500mW/32 ohms.
Distortion: 1KHz sine wave 20W output <0.01%
Input sensitivity: <0.4Vrms
Amplifier voltage gain: 22 times
Maximum power consumption: <150W
Operating voltage: AC230V (can be customized AC115V)
Dimensions: 280*212*90mm
Weight: about 7Kg
Package Included:
1 × Finished Pass AM amplifier
