# Building a 6:1 Mux for 5.1 Testing

**URL:** https://forum.quantasylum.com/t/building-a-6-1-mux-for-5-1-testing/541
**Category:** Uncategorized
**Created:** [December 24, 2021, 7:58pm UTC](https://forum.quantasylum.com/t/building-a-6-1-mux-for-5-1-testing/541 "2021-12-24T19:58:09Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![matt](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@matt](https://forum.quantasylum.com/u/matt)
#### Post date: [December 24, 2021, 7:58pm UTC](https://forum.quantasylum.com/t/building-a-6-1-mux-for-5-1-testing/541/1 "2021-12-24T19:58:09Z")

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Discussion or questions from the blog post linked below:

> **[Building a 6:1 Mux for 5.1 Testing](https://quantasylum.com/blogs/news/building-a-6-1-mux-for-5-1-testing)**
>
> 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 product (to be released in January or February 2022) that permits relay switching using standard