# BHK Preamplifier Versions? **URL:** \ **Category:** Preamplifiers\ **Created:** [November 25, 2020, 10:38am UTC](https://forum.psaudio.com/t/bhk-preamplifier-versions/20270 "2020-11-25T10:38:29Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Byrdman](https://avatars.discourse-cdn.com/v4/letter/b/f1d935/32.png) [@Byrdman](https://forum.psaudio.com/u/Byrdman)\ **Post date:** [November 25, 2020, 10:38am UTC](https://forum.psaudio.com/t/bhk-preamplifier-versions/20270/1 "2020-11-25T10:38:29Z")
Is there a difference between the BHK Preamplifiers labeled “PerfectWave” vs those labeled “Signature”? If so, what? Thanks, Byrdman ---
**Author:** ![Elk](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/elk/32/1240_2.png) [@Elk](https://forum.psaudio.com/u/Elk)\ **Post date:** [November 25, 2020, 1:50pm UTC](https://forum.psaudio.com/t/bhk-preamplifier-versions/20270/2 "2020-11-25T13:50:54Z")
See, this thread > [@Name Change for BHK 250?](https://forum.psaudio.com/t/name-change-for-bhk-250/16537): > > So I purchased a new BHK 250 a few weeks back from an old authorized dealer and unfortunately it was damaged in shipping, so I sent it to PS Audio in Boulder and I just received the repaired unit back from PS Audio. It retains the same serial number. I just happened to notice that the name on the faceplate of my repaired amp says “PerfectWave BHK S250 Amplifier”. I’ve never seen this designation anywhere. Checked photos of my damaged amp that I sent in, and sure enough, it was labeled “BHK S… ---
**Author:** ![jamesh](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jamesh/32/3871_2.png) [@jamesh](https://forum.psaudio.com/u/jamesh)\ **Post date:** [November 25, 2020, 4:06pm UTC](https://forum.psaudio.com/t/bhk-preamplifier-versions/20270/3 "2020-11-25T16:06:11Z")
No difference at all on the inside, only the screen print. We made a change to the naming not too long ago to try and consolidate our product lines. “PerfectWave,” “Stellar,” “Sprout.”