Abstract: The prestigious High-Efficiency Power Amplifier (HEPA) Student Design Competition (SDC) has been held annually for 17 years. In 2021, the competition was held virtually, live streamed from ...

Abstract: A simple yet effective approach for variable-gain amplifier (VGA) design with accurate dB-linear characteristic is presented. In order to extend the bandwidth of the designed VGA with a ...

Why you can trust What Hi-Fi? Our expert team reviews products in dedicated test rooms, to help you make the best choice for your budget. Find out more about how we test. Does the thought of a Rega ...

Esoteric’s N-05XE and S-05XE combine flagship DAC, streaming, balanced preamp, serious headphone amp, and Class A power—but at $26,500, is this the most future-proof “affordable” reference system?

Yamaha’s C-5000/M-5000 amplifier pairing is as polished and well-engineered as they come. It is a pleasure to listen to and use Why you can trust What Hi-Fi? Our expert team reviews products in ...

Yamaha is a difficult company to pigeonhole. It dominates the musical instruments market, manufacturing everything from grand pianos and electronic keyboards to guitars and trumpets. The brand is also ...

The Singapore-based company behind the well-received Harmony DAC has unveiled a new product line. The Crescendo series sits below the flagship Harmony range, and the Verse is first out of the gate: a ...

Nagra’s $24,500 PREAMP II-S is considered one of the company’s more affordable preamps. That alone tells you exactly who this is for—and who it isn’t. That it also likely sounds superb is almost ...

Pro-Ject has announced the Pre Box S3, a pre-amplifier designed to serve as the central hub of a modern (and potentially compact) hi-fi system. The Austrian company, better known for its turntables, ...