Modern opamp specs are amazing. They come to us in a compact PDF form with outstanding vector color graphics, making it easy to know an enormous am...

Tractor is our open-source platform for automating production testing. It's designed to let you build out a comprehensive test plan for your produc...

When testing a 5.1 amplifier, it's desirable to perform the tests with all channels under load. The front-panel of the QA440 is shown below. It's a...

Last year at this time, we introduced the QA402 as a successor to the QA401. The rapid switch was required by the AKM fire, which destroyed AKM's f...

Update September 17 2021 The graph below is the mid-September update. Since July we've seen Digikey stock degrade further, by another 8% or so. How...

The December 2020 of audioXpress features a very detailed and thorough review of the QA401 and QA451. Reviewer and acoustic engineer David Logvin c...

Release 1.920 adds open loop testing. Open loop testing is useful when you are testing devices that cannot accept a stimulus from the audio analyze...

Post by Matt In late October, a massive 82 hour fire destroyed AKM's ability to deliver their flagship ADC and DAC products to customers, and this ...

There are several ways to move many channels of audio over a hundred meters. Most familiar to any that have worked in live sound is the humble audi...

Post by Matt One drawback of the QA450 was the fact that when the loads were disconnected, the output was muted. That changed on the QA451, and the...

The QA440 Multimode Relay provides 5-general purpose DPDT relays, accessible through two front-panel DB25 connectors wired in a Tascam DB25 audio p...

This week we begin shipping the QA490, which is a companion product for the QA401. The QA490 is for those that need to compare In-ear Monitors (IEM...