At the extreme budget end of tube audio lie single-tube amplifiers usually using very cheap small-signal pentodes. They’ve appeared here before in various guises, and a fitting addition to those ...

The 6J1 seems to be ubiquitous throughout the Chinese kits, which is surprising when you understand that it’s not an audio tube at all. Instead it’s a small-signal VHF amplifier, a rough ...

The other new product I've been privileged to audition in this first batch is the Black Ice Audio F360 Tube Pre-amplifier with built-in Sound Stage Expander ("panorama control") and equalisation for ...

And because it was initially designed as DIY kit, it’s easy to restore ... Like most vintage audio equipment, original Dynaco ...