Mods to Primaluna Evo400 preamp

Has anyone modded their Primaluna Evo400 preamp? Or a similar preamp / integrated?

I'm looking for recommendations to tweaks. Does changing the input jacks to higher quality, or swapping capacitors help?

I am enjoying this pre, and have locked into a supply of 12AU7 tubes. I don't see changing it anytime soon. So therefore, it's time to mod!

Finally... if anyone has a circuit diagram, that would be super helpful.

kwhilden05-02-2025 8:56pm

kwhilden OP Details Discussions Posts This discussion Message User 3 posts 05-02-2025 at 10:32pm Copy Comment URL Report Comment Edit Delete Changing the sound is the whole entire point of doing mods. I like doing mods to see what change it makes to the sound. It's a lot cheaper than buying new gear LOL. I get that the Prima Luna uses good parts to start, but I'm sure more can be done. So if anyone has any advice on mods they have done to Primaluna gear, please let me know. Thanks!
Post removed May 03, 2025
dekay Details Discussions Posts This discussion Message User 5,730 posts 05-03-2025 at 09:46am Copy Comment URL Report Comment Edit Delete I would roll the two center 12au7 tubes before modding. DeKay
kwhilden OP Details Discussions Posts This discussion Message User 3 posts 05-03-2025 at 01:24pm Copy Comment URL Report Comment Edit Delete Yes, already doing the tube roll thing.its quite enjoyable.
grk Details Discussions Posts This discussion Message User 244 posts 05-03-2025 at 03:37pm Copy Comment URL Report Comment Edit Delete Talk to Kevin at Upscale Audio...I'm sure he would be more than happy to walk you through some mods. ; )