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Power amplifiers

Review of the Grimm PA1 Mono Power Amplifier

Regular readers of Alpha Audio probably already know this: we’re pretty fond of brands with studio roots. The reason is actually quite simple: those...

Introducing new Naim 200 series – NSC 222 – NAP 250 – NPX 300

Recently, Naim introduced the new 200 series. We were fortunate to be able to attend both one of the introduction presentations as well as...

Build Guide – Hypex Direct Nilai 500 Mono Power Amplifiers

Those who like to go for "bang for the buck" in hi-fi land really can't ignore Hypex's DIY-kits. We've already built the stereo version...
Description

A power amplifier is the powerhouse in the set. It has to multiply the incoming signal – mostly from the preamplifier – by a factor ‘X’, so that the loudspeaker gets enough power to move air. Of course, this must be done without any addition of timbre, distortion or, for example, phase twists.