Despite its compact size, the FiiO QX13 is a true audiophile-grade gadget. It features a flagship-quality DAC chip (ESS Sabre ...

Fiio has unveiled its latest portable DAC/headphone amplifier, the QX13. Constructed using a carbon-fibre body, the same ...

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 paper presents an optimized current-steering digital to analog converter (DAC) designed for a Class-D audio amplifier. The DAC exploits the potential of a mixed-signal architecture, thus allowing ...

Day one of Prime Day is in the books. The good news? Almost all of the great deals survived the night, and we’re monitoring ...

The Burson Conductor GT4 is a $3K audio sledgehammer—insanely powerful, deadly neutral, and hot enough to fry eggs.

The best tech products announced this week include Orange Amps' first-ever turntable and Nothing's striking noise-canceling ...

Focal Bathys MG with Bluetooth ANC headphones hits the hi-fi wireless scene with serious upgrades—our review breaks down ...

In this paper, a new topology of the class E power amplifier (PA) is proposed. The output circuit in the proposed PA is different from that in the conventional class E PA. The conventional output ...