Phase Linear 400 mod
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The Phase LInear 400 and 700 amplifiers are among the best ever transistor amplifiers ever sold. The circuit is an excellent example of both simplicity and sophistication. A huge, high quality power transformer backs of the need for transient handling typically needed to reproduce music. The large number of output transistors allows for music to to spend more time in the more linear part of the transistor. Opinions as to the excellence of the circuit may vary, but the experience of the sound and music reproducing capabilities of this is hard to dispute. For one thing, it just sounds louder and more powerful than most other amps rated at 200 watts per channel. Often a 200 watt per channel amp seems barely adequate to power medium-small sized speakers, but the Phase Linear 400 seems more than adequate for such speakers.
This Mod came about as a result of poking around and tinkering after making a repair to a Phase Linear 400 and from fulfilling a customer’s request to install larger power supply capacitors.
Price is for modification labor and parts. Does not include unit to be modified.