Audio Research’s self-declared "finest-ever power amplifier" is now shipping worldwide and it is the culmination of 55 years at the very cutting edge of valve amp design. What you're looking at ...

The Audio Research Reference 330M amplifier has double the output of the firm's previous valve flagship. Expect to pay around £92,000 in the UK, $90,000 in the States. You can't accuse the ...

For the electronics enthusiast a tube audio amplifier makes for an interesting and unusual project, and for that reason it’s one tackled by many. [Keri Szafir] is no exception, and she’s ...

For this amplifier the frequency and phase responses ... And it sounds, well, like my hi-fi system. No special “warm valve sound”, but it did give me the momentary cachet of a pair of glass ...

The Audio Research Reference 330M amplifier has double the output of the firm's previous valve flagship. Expect to pay around £92,000 in the UK, $90,000 in the States. You can't accuse the ...

Unison Research is recognised as a leader in the production of tube amplifiers, designing and producing them in Italy. Ian ...

When it comes to valve amplifiers, power outputs of around 30W to 50W tend to be the norm. In some instances, this figure might rise to around the 100W mark. But Audio Research’s new Reference 330M ...

What fewer people may know, however, is that he’s also a valve-amp maven with years of meticulous repair and restoration experience under his belt. So while we were chatting, I took the ...