2021-01-21 - John Dunn

High-fidelity speaker system can handle high power without distortion

A very old idea for a high-fidelity speaker system deserves a new look.

2021-01-04 - Brian Dipert

Balanced headphones: Can you hear the difference?

Learn the differences in balanced and unbalanced headphone...

2020-11-25 - Brian Dipert

Portable audio recorder can capture four-track recordings

As soon as live concerts return, this engineer will be pulling his mics, stand, and cables out of storage again,…

2020-11-10 - Brian Dipert

Breaking down the Google Home Hub

The Google Home Hub contains a heat-sink-adorned primary PCB, plus a secondary PCB containing an ambient light sensor and two…

2020-10-06 - Brian Dipert

Reviewing a premium digital audio player

At the heart of the XDP-02U digital audio player's appeal is its hardware design, but you also need to consider…

2020-08-28 - Susan Nordyk

MEMS speaker delivers high-fidelity, full-bandwidth sound

Montara, a monolithic true MEMS speaker from xMEMS Labs, delivers high-fidelity, full-bandwidth sound with low THD for in-ear audio devices.

2020-06-29 - Brian Dipert

Is it time to upgrade to 4K UHDTV?

10 years later, and for 1/3 the price, this engineer still ended up with a notable TV upgrade.

2020-06-19 - Susan Nordyk

Amp demo board teams with audio-grade SMPS

GaN Systems offers an amplifier evaluation kit with a 400-W continuous-output SMPS that enables high-power Class D audio designs

2020-06-15 - Brian Dipert

Teardown: The router that took down my wireless network

When life gives you a failed router, take the opportunity to tear it apart.

2020-05-28 - Martyn McKinney

Create radio receiver circuits with the LM386 audio amplifier

Use the LM386's undocumented attributes to create simple high performance regenerative receivers.