It’s not the whole truth though, as [Albert van Dalen] demonstrates with his tube preamplifier running from only 3.3 V. If your first thought is that he must have made a flyback converter to ...

We’re also glad to see an onboard tube preamp with a 3.5mm AUX input. Conveniently, the X2’s vacuum tubes can be swapped for other tube models. An excellent feature for hi-fi fans, this means ...

At $4,950, the Nagra Compact Phono is a “lower cost” high-end audio solution for getting the most out of your vinyl record ...

The build starts with an off-the-shelf preamp kit based around two common 6J1 tubes. These Chinese pentode valves come cheap and you can usually get yours hands on this kit for $10 or so.

The combination of the tube-driven preamp and mechanical tape does something wonderful to an electric guitar. But this wasn’t any old EP-2; the unit Strymon’s R&D department got its hands on was in ...