I'm on my second TA 30, and about to bail on the project. I love the sounds of this amp, but it is starting to make me question my sanity. The first one had a dead effects loop. Back to the store for the second one, which was fine for about a week, then started t demonstrate the same problem. On the gain channel there is a significant ground buzz whenever the loop is engaged. This is not the reverb buzz problem everyone else seems to have. It is reverb independent, gain independent, and master volume independent. With the master on the channel set to zero, the buzz is just as loud as when it is cranked, and goes away as soon as the loop is disengaged. It is not present on the clean channel whatsoever. The source appears to be somewhere from the loop return and the master, as a gate in the loop does not clean it up.
There is another problem with channel switching, and this appears to be related to the same issue somehow. At times when switching from the clean to the dirty channel, for anywhere from 1-30 seconds, the master volume on the dirty channel will not exist, resulting in massive volume spikes when switching channels. This is an intermittent problem, whereas the loop buzz is constant. My first one also had the volume spiking when switching channels, although at that point I was new to the amp and just assumed I was doing something wrong.
I spoke with someone at Mesa, and they said they had never heard of the problem. Given that I have had versions of the same problem twice, I'm suspicious. We spent 30 minutes on the phone trouble shooting the problem, and came up with nothing. I love everything about this amp when it works, but I am starting to really wonder if it is worth trying a third one.
Any thoughts or reassurance?
There is another problem with channel switching, and this appears to be related to the same issue somehow. At times when switching from the clean to the dirty channel, for anywhere from 1-30 seconds, the master volume on the dirty channel will not exist, resulting in massive volume spikes when switching channels. This is an intermittent problem, whereas the loop buzz is constant. My first one also had the volume spiking when switching channels, although at that point I was new to the amp and just assumed I was doing something wrong.
I spoke with someone at Mesa, and they said they had never heard of the problem. Given that I have had versions of the same problem twice, I'm suspicious. We spent 30 minutes on the phone trouble shooting the problem, and came up with nothing. I love everything about this amp when it works, but I am starting to really wonder if it is worth trying a third one.
Any thoughts or reassurance?