Hmm. Well I'm using 2 Powerhouse 2x12 cabs which should be a near perfect matching. The other day at practice I had the Titan's Channel 1 Master and Gain each set at about 10 o clockish and Output set to 10-12 o clockish. This was not very loud in my opinion. Usually with my Mesa M6 with the Gain set to 12 o clock and the Master at 9 o clock it is quite a bit louder than the Titan was. (I'm also running all the tone controls on both amps set to noon). I honestly need to tweak with this amp some more because I haven't had much time with it (all my gear is at our practice space ), but like I said, I was kind of scared of cranking any of the knobs up because I know this thing is suppose to get stupid loud.
First thing I'm going to do is crank the Output knob and bring the individuals channel Masters to a level that sounds right. To be honest I didn't even know this amp would have a single Output knob for both channels. I thought each channel had their own Masters and Gain (which they do) and those set the individual levels. It wasn't until I turned the Titan on and it wasn't making any sound that I realized the Output was turned all the way down. (I thought the Output knob had something to do with the Solo knob since it is located right under it on the amp, and every other knob on this amp is just a duplicate for the 2nd Channel). Basically I'm just trying to get this Titan to be as loud as my M6 and deliver a tube tone, so I don't think this will be a problem once I know the ins and outs of the Titan. As long as I'm using my ears and watching my speakers, do I need to worry about damaging the amp by running the Output on max? I'm hoping once I crank that Output knob that I won't have to turn up the individual channel Master controls past 9 o clockish (cause it should be plenty loud at that point). Thanks again for all the helpful info!