First made in 1959, this is the best-selling tube amplifier ... Not only is the ST-70 regarded as one of the most popular tube amplifiers of all time, it’s still widely sought after by vintage ...

and remain a spectacularly cheap way to boast a tube amp in your hi-fi even if it might not always be the best possible amp.

Much like vinyl records, tube amplifiers are still prized ... if you’re determined to build your own amplifier anyway take a look at this one which uses vacuum tubes built from scratch.

The brand, best known for its affordable high-resolution music streamers, has released its first amplifier for traditional hi ...