Like Folkvangr, the Schiit Valhalla 3 operates as a OTL/OCL design—no output transformers, no capacitors in the signal path.

The company’s newest headphone amplifier, the Valhalla 3, isn’t just a new-and-improved version of the Valhalla 2, which had ...

Megabucks tube amp tones beloved by the likes of Joe Bonamassa, Kenny Wayne Shepherd and Carlos Santana in a stompbox you ...

The best tech products announced this week include Bang & Olufsen's portable speaker and Leica's special-edition camera.

Abstract: This paper presents a tuned transformer-based waveform-engineered power amplifier (PA). A two-stage PA is designed and fabricated in a 65 nm bulk CMOS process. A 3 rd order transformer-based ...