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 ...

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 ...

A glance at any outlet through which Chinese modules can be bought will find this type of tube in small audio amplifier projects ... No special “warm valve sound”, but it did give me the ...

The Audio Research Reference 330M amplifier ... The tubes are rated for 3,000 hours of listening and Audio Research says that the 330M is built with longevity in mind, with integrated valve ...