# Measuring RIAA with qa403 **URL:** \ **Category:** QA40x\ **Created:** [May 24, 2025, 1:53am UTC](https://forum.quantasylum.com/t/measuring-riaa-with-qa403/1887 "2025-05-24T01:53:19Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![THDaniel](https://avatars.discourse-cdn.com/v4/letter/t/e480ec/32.png) [@THDaniel](https://forum.quantasylum.com/u/THDaniel)\ **Post date:** [June 10, 2025, 1:12pm UTC](https://forum.quantasylum.com/t/measuring-riaa-with-qa403/1887/6 "2025-06-10T13:12:58Z")
![Spannungsteiler1](https://canada1.discourse-cdn.com/flex032/uploads/quantasylum/original/2X/a/a31b8461f0dee6282fab4e5fa9f087785f1948b3.jpeg) ![Spannungsteiler2](https://canada1.discourse-cdn.com/flex032/uploads/quantasylum/original/2X/5/504933a916722457d0e6c841d6399032b459e47b.jpeg) This might look a bit wild. Connector is not an RCA but a Redel as I like these better on my personal gear. Voltage divider is differential 5k 5R 5k. The center 5R is chosen to emulate a 5R coil which is a typical value for the MC cartridges I use. This is then connected to 2 BNC cables for balanced connection to the QA403. Also check this thread: [Phono preamp measurement setup](https://forum.quantasylum.com/t/phono-preamp-measurement-setup/905) --- _[View the full topic](https://forum.quantasylum.com/t/measuring-riaa-with-qa403/1887)._