Saturday, January 8, 2011

PassLabs Concept Amplifiers

Large model :$70,000/pair
Smaller model:$45,000/pair

The Concept Amps are available in large and smaller models.

The large amp delivers about 300 watts, and is equivalent to two XA200.5-size chassis per side (four for stereo).
The smaller model delivers about 200 watts, and is equivalent to two XA160.5 Amp chassis per side (four for stereo).
Separate power supply.

The Concept Amps feature the same output stage topology as the XA200.5 with twice as much heat sink, more output devices (currently 144), and a push-pull bias up to 300 watts (600-watt peak) into 8 ohms.

New bias hardware increases the Concept Amps' single-ended Class A bias from the XA200.5 Amp's 5 watts to over 300.

The Concept Amps’ front end circuits are also biased higher, with the JFET input stage bias triple that for the XA200.5 Amp, and the voltage amplification stage bias quintuple that of the XA200.5.