Campfire Audio launches the Relay portable DAC/amp with AKM SEQ 4493 chip, balanced outputs, and high-res support at $229.

Cambridge Audio announced its latest streaming amplifier, which comes in the form of the new Evo 150 SE, and it is available this July.

Cambridge Audio’s Evo 150 is a beautiful, “just add speakers” streaming amplifier designed for modern audiophiles who prefer not to deal with a traditional component rack. It was originally released ...

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.

Ruark’s streaming amplifier is lovely to look at and use, with extensive features and a smooth, captivating performance in a compact form.

There are numerous evergreen chips in the semiconductor industry, and this blog provides a sneak peek at some of these timeless technology marvels. Take µPC1237, for instance, NEC’s bipolar analog IC, ...

The Relay DAC/AMP is a tiny, portable DAC and headphone amp, similar to the USB DAC design of the five-star Audioquest DragonFly Cobalt. Measuring just 57mm x 23mm x 10mm and with a wallet-friendly ...

This letter reports a radio frequency (RF) amplifier based on the four-zone MOSFET integrated with health monitoring sensors. The characteristic of the MOSFET is that it has four zones and each zone ...

Music streamers are a convenient and versatile one-box solution for getting high-quality digital music from multiple online sources.

This paper introduces the simulation of the MOSFET common-source amplifier circuit, and provides a method to jointly solve the physical model of the device and the external circuit to simulate the ...

Whether you want a rugged, take-anywhere speaker for the beach or the centerpiece for a multiroom sound system, these are the top Bluetooth and Wi-Fi speakers we've reviewed.

Rohm has developed a 30V N-channel MOSFET in a common-source configuration that achieves an industry-leading ON-resistance of ...