HT50 Volume Drops

[stfnross]

Hello Blackstar team,

Huge fan of your products here... I am having issues with volume drop/swell/drop through the pre-amp channel on the HT50. I had a similar issue with the HT5 and replacing the pre-amp tubes fixed the issue. I'm thinking this is a good first pass on the HT50 since I've probably owned it about 2 years now anyways. If replacing the tubes doesn't work then I'll bring into my local electronics guy to troubleshoot.

My question to you is... what are my best replacement tube options for this amp?

Many thanks,

Stefan

[8len8]

https://www.tubeampdoctor.com/en/shop_T ... _HT50_4610