Hey!
Did you swap the tubes? Have you noticed some improvements?
However my TH30 (that I bought used) has JJ's tubes (pre and power) but since I bought it used I don't know if the former owner has made a tube swap.

Incidentally, I managed to scare myself during this test, by unwittingly (is there a theme across my posts in this thread? :oops: ) operating the amp with a cable plugged into the effects send socket, with the other end of the cable plugged into nothing; I could hardly get any volume out of the amp...

Here are the results from my TH30C (tubes are still the stock ones) with my 2004 Les Paul Studio's stock bridge pick-up. As per Invin's tests, I used all four power tubes and the full power setting on the front panel. Dirty volume was set to 12 o'clock. (Hopefully that was the same as Invin's "5".)...

Just tried the same settings on mine (full power, all tubes, volume at 5 aka. half). I got: Gain below 2: Silent Gain at 2: Sound starts, cleanish tone Gain at 3: Tone starts getting dirty/crunchy Gain at 4+: Sore ears from the loudness :mrgreen: It seems like I'm getting sound and breakup about 1 ...

I stuck a set of JJ's in my TH30 and tested it against a Laney vc50 for some high gain stuff. The TH30 came out sounding better i think http://www.youtube.com/watch?v=6nd6MNx2oK8" onclick="window.open(this.href);return false; Hi! which stock tubes did you found? I recently bought a used TH30 and al...

I swapped the preamp tubes with no better results so I start to think it's normal too even though I don't like it too much... By the way I think I won't use the dirty channel at low gain, for this the clean channel is far better!

That definitely doesn't sound right to me... it sounds like yours has a lot less gain all the way through than mine. Was it loud when you were making the video? Because mine is painfully loud with the volume that high on the dirty channel at full power. You might have a bad tube. Is there any diffe...

Here you can find some videos showing the problem...

http://sdrv.ms/1dtI1co

http://sdrv.ms/192FQNr

Hope someone could help me!

Yes, from 10 o'clock on I get a nice tone.
The issue is in the huge difference, in the same channel, from gain at 9 o'clock to 10 o'clock and more... It seems like it sounds from 10 to 100 with nothing in between!

Hi everybody, first topic for me! :D I recently purchased a used TH30, it sounds great! However I just noticed that, on the dirty channel, gain levels lower than 9 o'clock would make the amp sound very very low, almost not sounding at all. After increasing the gain level over 9 o'clock then the amp ...