With the wealth of cheap and highly integrated audio amplifier modules on the market ... We may have seen other homemade vacuum tubes before — we even recently featured a DIY X-ray tube ...

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 ...

You can't accuse the engineers at Audio Research of talking themselves or their products down – the self-proclaimed "American gods of valve-based audio" have a new flagship power amplifier that ...