# 6 and 7 v replacement tubes for BHK preamp

**URL:** <https://forum.psaudio.com/t/6-and-7-v-replacement-tubes-for-bhk-preamp/23768>\
**Category:** Preamplifiers\
**Created:** [May 21, 2021, 11:07pm UTC](https://forum.psaudio.com/t/6-and-7-v-replacement-tubes-for-bhk-preamp/23768 "2021-05-21T23:07:05Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![brett66](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/brett66/32/92201_2.png) [@brett66](https://forum.psaudio.com/u/brett66)\
**Post date:** [May 21, 2021, 11:22pm UTC](https://forum.psaudio.com/t/6-and-7-v-replacement-tubes-for-bhk-preamp/23768/2 "2021-05-21T23:22:04Z")

</div>

Welcome. 6JD8, 6922, 7308, 7DJ8 to name a few majors.

I’ve enjoyed the BHK pre for more than 3 years. It’s a fine unit.

You’ll find volumes of information here: [BHK Preamp tube rolling](https://forum.psaudio.com/t/bhk-preamp-tube-rolling/3403)

My favorites tubes in the pre are in the 12v family. 6v and 7v tend to be noisy or not last long in my unit. Each unit will have a tolerance so don’t be afraid to try. Just know that is was intended to run 12AU7 or compatible tubes with the secondary ability to run 6/7v. Others have had a great experience with 6/7v tubes but they tend to be some rare, expensive versions.

Don’t discount the stock tubes. I would give them 100 hours playtime. They need a few hours to settle and more importantly so does the preamp.

---

_[View the full topic](https://forum.psaudio.com/t/6-and-7-v-replacement-tubes-for-bhk-preamp/23768)._