# Firmware updates and fixes for the new Directstream MK2

**URL:** <https://forum.psaudio.com/t/firmware-updates-and-fixes-for-the-new-directstream-mk2/32755>\
**Category:** DACs\
**Created:** [March 10, 2023, 9:37pm UTC](https://forum.psaudio.com/t/firmware-updates-and-fixes-for-the-new-directstream-mk2/32755 "2023-03-10T21:37:22Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![jkrichards](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jkrichards/32/191511_2.png) [@jkrichards](https://forum.psaudio.com/u/jkrichards)\
**Post date:** [March 11, 2023, 12:40pm UTC](https://forum.psaudio.com/t/firmware-updates-and-fixes-for-the-new-directstream-mk2/32755/9 "2023-03-11T12:40:54Z")

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Thanks Ted.  
#8

> [@Ted Smith opens up and tells all](https://forum.psaudio.com/t/ted-smith-opens-up-and-tells-all/31943/5):
>
> I was referring to the attenuator switches being noisy. Before we knew that they were noisy and that that noise was there even if when the attenuators weren’t being used I was trying to balance things like THD, noise, … when tuning the SDM. Now that we know the source of the noise and have removed it from the units sent to the field I can retune the SDM to lower THD a little. No units were shipped with the bad attenuator switches.

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