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Pass Labs XA25 Stereo Amplifier

Entering their 22nd year of production, the X and XA power amplifiers have remained at the cutting edge of audio through continuous innovation and refinement. At Pass we build amplifiers with excessive output stages, huge heat sinks and massive power supplies. We use the highest quality components in simple linear topologies, assembled and tested with great care in Auburn, California. They measure well and sound great. They are heavy, reliable and expensive.

Specifications  

Gain  –  20 dB gain
Output Power  –  25 Watts rms @ 8 ohms 50 Watts rms @ 4 ohms
Distortion  –  0.1% @ 25 Watts, 8 ohms, 1 KHz
Class A envelope  –  50 Watt peak for 2, 4 or 8 ohm load
Bandwidth  –  DC to -2 dB @ 100 KHz
Noise  –  Less than 50 uV output, unweighted 20 to 20 KHz
Damping Factor  –  500
Slew rate  –  100 V/uS
Input Impedance  –  47 Kohm
Peak Current  –  10 Amp output (200 Watt peak into 2 ohms)
Protection  –  Shutdown at 10 amps output
Idle Power draw  –  2.0 Amps @ 120 VAC (240 Watts)