[Simon] wrote in to tell us about a headphone tube amp that he just built. It is based on schematics at diyaudioprojects.com that were actually featured on Hackaday in the past. [Simon’s ...

(It’s also known for naming its products after Norse mythology.) The company’s newest headphone amplifier, the Valhalla 3, isn’t just a new-and-improved version of the Valhalla 2, which had been the ...

Luxman spoils us with a flagship headphone amp, premium phono stage, and a very limited edition of heavenly Hi-Fi ...

To allow the comparison of different op-amps in a headphone amplifier, [Stephan Martin] has created a stereo amplifier board complete with sockets to take single or dual op-amp chips. The circuit ...

And they have their own dedicated headphone amp inside, rather than the amp integrated ... She is the singer in spectacularly obscure Glaswegian rock band Unquiet Mind.