As an amplifier, the ZH3 is positioned to drive most headphones and in-ear monitors. It features a proprietary dual-power ...

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. We can’t remember the last ...

A conventional tube amplifier has a circuit whose fundamentals were well in place around a hundred years ago, so there are few surprises to be found in building one today. Nevertheless, building one ...

It's not surprising that we read down the What Hi-Fi? Awards 2022 winners in the stereo amplifier category and feel a strong sense of déjà vu; it is almost a mirror image of the list we celebrated ...

The Audio-Technica AT-BHA100 and AT-DAC100 are proof that interest in hi-res streaming and high-end headphone systems is growing. Raise your hand if you expected to see a $999 USD headphone amplifier ...

The Helm Audio Bolt DAC/AMP’s outstanding audio performance; ability to decode every major high-res audio format—including MQA; ultra-compact form factor; and $99 price makes it a must-have device.

Here is a simple hi-fi audio stereo power amplifier based on TDA2616 IC. This amplifier works on two 12V batteries or one ±12V AC/DC adaptor. The circuit can deliver 2×12-watt output power for 8-ohm ...

Power amplifier is the part of audio electronics. It is designed to maximize the magnitude of the power f given input signal. In sound electronics, the operational amplifier increases the voltage of ...

Power amplifier is the part of sound electronics. It is designed to maximize the magnitude of the power of given input signal. In sound electronics, the operational amplifier increases the voltage of ...

Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio salesman, and as a record producer. Steve reviewed audio products for CNET and worked as a freelance writer for ...