Now fast-forward a half-century or more, and affordable, good-quality power transformers ... on budget-friendly transformers, and even shows off a nice three-tube audio amp using them.

one of the larger and more powerful amplifiers that Yamaha offers. It has a 625VA Toroidal power transformer, which grants it a rated output of 20 Hz-20 kHz and produces 90 W ＋ 90 W at 8 ohms or ...

two ultralinear output transformers and one power transformer. Unlike its previous amplifiers, the Dynaco ST-70 was a low-powered tube amp. It could output 35 watts per channel (into 8 ohms ...

It’s usual for an amplifier to have a slightly worse THD at higher frequencies, for example. The power supply transformer and capacitors at the front of this amplifier are the largest of its ...

The 303 power amplifier from Quad has been updated but ... custom-specified toroidal transformer, numerous reservoir/smoothing capacitors and five regulated supply rails. The new 33’s low ...

A low noise 320VA toroidal transformer combines with 60,000uF ... a maximum output current of 15A per channel. The 9000P power amplifier from Audiolab offers 100W per channel into 8Ω.

It's a midsized amplifier that balances price and performance nicely. It runs on a custom power transformer with 12,000 µF block capacitors and extruded aluminum heat sinks, giving it a rated ...