The Dynaco ST-70 is one of the most popular tube amplifiers ever. First released in 1959, it's still sought after by hi-fi enthusiasts today.

We first glimpsed Musical Fidelity 's revived B1 range at the Bristol Hi-Fi Show way back in cold, dreary February, which teased a stereo amplifier and a CD player. Five months on, we now have ...

First made in 1959, this is the best-selling tube amplifier of all time. Every product is carefully selected by our editors. If you buy from a link, we may earn a commission. Learn more Dynaco ...

Naturally, which stereo amplifier you choose will greatly impact your overall system performance, so you want a best-in-class performer that also offers the physical connections your sources need.

These are the best AV receivers from Onkyo, Sony, Yamaha and Denon, based on CNET's testing.

Whether you're looking at a soundbar or a dedicated AV receiver and surround sound speakers, we'll help you decide what works for your living space and budget.

A high-harmonic traveling-wave tube (HHTWT) is designed, developed, and tested in this paper. This device is configured as a multiplier-amplifier with Q-band input signals and its third harmonic, i.e.

A 2/spl times/40 W class D amplifier chip is realized in 0.6-/spl mu/m BCDMOS technology, integrating two delta-sigma (/spl Delta//spl Sigma/) modulators and two full H-bridge switching output stages.