The amp looks and sounds great, that's absolutely true. But the promise was an amp that you could just quickly setup and use for practice without fumbling with cables, and that it does poorly. If you, like most people today, have a lot of wireless electronics at home you will not be able to get this thing rot work reliably. For example, streaming music from a mobile device or computer is just not reliable, ever. The built-in wireless guitar transmitter/receiver, a big selling point of this amp does not work reliably either.
And the app, looks like an app from 2007 on the first iPhone, and just as unreliable as well. When it works, great. But trying to switch to another device to control the amp and fumbling to get the Bluetooth LE to connect to something else requires almost an engineering degree and time to spare. You end up, again, just not using it either once you set things up.
All this makes you go back to using multiple cables that although not a big deal and you end up using this amp like a good sounding standard amp, but that was not the promise that Yamaha made and really annoys the crap out of me. Most people just suck it up and use cables but I ended up selling my THR30IIW and buying a Spark 2 that so far is working very reliably and the app is just fantastic.
