Amplifiers

I’m a long‑running technical electronics repair and design engineer working in music for film...

I have a Bryston 5B, and I’d like to be able to switch between two sets of passive speakers, both driven by the Bryston, rather than buy another power amp for the second set...

Whether it’s classic NS-10s, battered old Auratones or something more esoteric, passive speakers require a power amp — here’s how to choose the right one.

When does one need a headphone amp? I have some Shure 1840s, which are great, but I’ve read about headphone amps and want to be sure I am getting the most from the cans.

I saw a mic preamp advertised as 'Class A' and 'Transformerless.' What do these terms mean and why exactly are they a good thing?