# Tube Rolling Options, balanced triode or no for BHK Pre / Bhk300

**URL:** <https://forum.psaudio.com/t/tube-rolling-options-balanced-triode-or-no-for-bhk-pre-bhk300/29679>\
**Category:** Amplifiers\
**Created:** [July 11, 2022, 9:52am UTC](https://forum.psaudio.com/t/tube-rolling-options-balanced-triode-or-no-for-bhk-pre-bhk300/29679 "2022-07-11T09:52:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dhampirhkg](https://avatars.discourse-cdn.com/v4/letter/d/a698b9/32.png) [@dhampirhkg](https://forum.psaudio.com/u/dhampirhkg)\
**Post date:** [July 11, 2022, 9:52am UTC](https://forum.psaudio.com/t/tube-rolling-options-balanced-triode-or-no-for-bhk-pre-bhk300/29679/1 "2022-07-11T09:52:09Z")

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When I was surfing the web shopping for some telefunken matched pair 12au7 for bhk pre or quad matched 6922 for the bhk300.

I realised there are options of having it as a balanced triode matched pair or quad matched pair as follows.

TELEFUNKEN ECC82-TK MATCHED PAIR  
TELEFUNKEN ECC82-TK W/ BALANCED TRIODE MATCHED PAIR  
TELEFUNKEN E88CC-TK QUAD MATCHED  
TELEFUNKEN E88CC-TK W/ BALANCED TRIODE QUAD MATCHED

SHOULD I go for normal ones or balanced triode versions for the bhk pre or bhk300s?

Will there be any issues if I chose balanced triodes vacuum tubes and replaced it in the bhk pre ?