I have several tube amps, and for years I used loadboxes to record them with IRs and to play at bedroom levels. Then I tried this Yamaha and my amps collecting a dust. I'm not saying THR sounds better than real amps. But THR sounds better at low volumes than real amps. And is more flexible. Actually, it sounds so good via my studio monitors, that I now record with it. And I love the fact that the flexibility is strictly limited - no mike models or positions to choose from, only cabs can be changed. This is good since I found that I tend to spend too much time tweaking the tone in plugins (Bias FX2, TH-U etc) rather than playing. Here I got perfect tones in minutes! E.g. here I play 80s style Hi-Gain "Shredwave" via this amp directly (btw, using a wireless system) :
the NEGATIVE. The App! THR Remote. Tried two different phones (Huawei and Samsung) - very rare occasions it works! In 90% it does not. Does not connect, don't see the device, don't sync etc. Complete disaster! Similar story with the desktop app via USB. Very poor software. Keep syncing, but never connects etc. It reminds me the nightmare with other Line 6 products I had in the past - software was always full of bugs and issues. And based on the reviews, these problems are very common. So Line 6 still has not found good software developers. Sad...