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 ...

Luckily, [Terry] at D-Lab Electronics has a few suggestions on budget-friendly transformers, and even shows off a nice three-tube audio amp using them. The reason transformers were and still are ...