[Rogers Gomez] has posted up this hybrid tube based headphone amplifier over at DIY Audio. Being a fan of tube amplifiers, but wanting something with lower voltage and lower cost, he put together ...

Integrated tube amp promises a warmer, more inviting sound Hybrid ANC, LDAC and USB-C for higher-res audio $799 (about £652 / AU$1,303) We've seen small vacuum tubes in headphone amps with the ...

There’s a mystique in audiophile circles about tube amplifiers. They can have a very nice sound which is attributed to their even-harmonic distortion, but they are often portrayed as requiring ...

Karma-AV is to distribute Unison Research’s high-performance valve-based Hi-Fi separates in the UK and Ireland. The Italian manufacturer’s line-up includes Class A pre/power and phono amplification ...

An audio amplifier that uses both tubes and transistors. The tube circuits drive the MOSFET transistors at the output stage because transistors can generate more power with less heat and ...