The entire system runs on 8 AA batteries and should ... to directly drive a 4-8 ohm loudspeaker load. Almost all tube amplifiers require a transformer to match the high impedance of the tubes ...

That takes this system to around $5,800 USD ... expect to see a number of network and tube integrated amplifiers try to do their worst in the coming months – and in a much smaller space. My Audiolab ...

Huge specification. Tiny footprint. That's the pitch for the new Rotel DX-3, a compact headphone amplifier and standalone DAC ...

Tube amplifiers are widely regarded as the pinnacle ... This means you can plug directly into a PA system and sound just like an amp. And for those who want their own on-stage monitoring, consider ...

And it sounds, well, like my hi-fi system. No special “warm ... about its being described as a headphone amplifier by the vendor. A single-ended tube amplifier has a very high impedance output ...

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 ...

The compact build lets you pick from a raft of licensed preamp modules designed in collaboration with a host of boutique amp brands ...

Swap preamp modules in and out and pair them with onboard American-style clean channel for a compact three-channel powerhouse for stage and studio ...

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 ...