CML Micro’s single- and two-stage GaAs power amplifiers target a range of dual-cell lithium battery-powered wireless devices.

There are a small handful of old tubes that need an impressively low voltage to work, though, and [J.G.] has put a few of them to work in this battery-powered audio tube amplifier. The key to the ...

Boss’s Katana series amps have become favorites with guitarists looking for lightweight, durable and affordable amplifiers that offer the sound, feel and response of classic tube amps while ...

Tailored for Bluetooth speakers, wireless doorbells, surveillance systems, and handheld gaming consoles, this amplifier ...