In particular, harmonic analyses were carried out, and it was shown that the valves in the first stage, both direct and derived, were incapable, with the paraphrase circuit, of providing ...

His plasma speaker does do the job well though, and in particular he’s put a lot of thought into the design of its drive circuit. At its heart is the ubiquitous TL494 PWM controller that you may ...

It consists of a JFET based pre-amplifier ... of output’s ranging from headphones to speaker cabinets. Their blog post provides extremely detailed circuit analysis of every part of the design ...

It offers four outputs, a fan-powered cooling system, and rack-mount capability and is built to withstand demanding ...

And, of course, the right amp/speaker combo can sound absolutely incredible ... Headphone users will also appreciate a dedicated headphone amplifier circuit for those moments where you want to escape ...

You’d, of course, need one AP-507 for each speaker ... house designed “dual-mono buffer amplifier, refined with meticulous attention to component and circuit detail for unparalleled clarity ...

Here’s how it works. Suppose you want a hi-fi system but are daunted by the prospect of multiple speaker and amplifier boxes or simply don't have space for separates. In that case, you may want to ...

TEAC has launched the AP-507 power amplifier, a new addition to its premium Reference 500 Series hi-fi components.