I have a Bugera Veyron with a hybrid preamp. It comes from the factory with 12ax7a tubes. I put some 12ax7wa on it and messed it up. I put the factory tubes back on and it sounds low and somewhat distorted.

DO YOU KNOW OF A TECHNICIAN THAT CAN FIX IT?

Just bought this.. During rehearsal my bugera veyron had sound cut out multiple times, did some troubleshooting between cables and instruments and could not find the problem. I noticed the problem would go away immediately if I jiggled the cable, which leads me to believe it may be the input jack. Other than that, the internal components seem fine. What could be causing this? 

How can I fix this?

I just registered my bugera 333xl infinium today . I originally ordered it back in Dec. of 2021 but since it was back ordered it didnt ship until July 6th 2022. After registering it today i get an email from you guys saying its not covered under extended warranty since its been longer than 90 days . I just received it last Saturday. You guys suck 

I've owned by Veyron since 2017 and up until last night it's been amazing.  I fired up the amp to start practicing for church this coming weekend and there was no sound output.  Checked with 2 basses, multiple instrument cables, headphones there's zero output from the instrument.  Successfully tested output from the FX Return so the cables/basses are all good so it's either something with the instrument jack itself or something in the preamp?  It's so strange as for the last year the amp hasn't left my house or even moved.  Has anyone had this experience and were you able to resolve it?

I have the pre-amp tube model and I need to understand how to use the Gain, Volume nand Master come into play to to set the overload light.

I've read on Talkbass, that one should set the Volume all the way down and then set the light using set the Gain. I've tried many combinations and have failed. To me, for the master , it should not matter where that control is. 

Is there a schematic to undertsand the signal order, that would help

Thanks for any help!

Hi there! I bought a 1990 infinium new a few months ago. 

Still has the factory tubes. Today after half hour of use, in red channel output lost all bass and gain. The sound was really bad and thin. Immediately i checked the green channel, and with the gain at 5 and volume at 7 it was super quiet. 

All infinium LEDs are off so i guess I don't have any power tubes broken. Is there something wrong with the preamp tubes?

What are my options here? Thanks