I've been using the amp mainly for evening practice while my son's asleep, and I'm really impressed with it. I play it with my SG, mostly with the clean channel, and the amp fits the guitar jack socket fine with no problems.
Things I like about it:
- Three channels: clean, distortion and lead (overdrive-y). I mainly use the clean channel which sounds really nice and clear; the distortion channel has a good crunch to it. I haven't used the lead channel very much, but it sounds pretty good, and distinct from the distortion channel.
- Aux input. This is really handy for plugging my phone in to play along with things.
Things I don't like that much:
- The 'on' button is quite small and recessed a bit, which makes it a bit fiddly to press. You need to hold it for a couple of seconds to turn it on and off, so I've never bumped it and accidentally turned the amp off - nothing wrong with the button, but I just don't like it that much.
- It feels a bit plasticky in general, which is to be expected since it's made from plastic and is nice and cheap. Again, this is a really minor thing, and the amp doesn't feel flimsy in any way.
- It has a few built-in effects (chorus, delay and reverb) with a couple of different presets for each. I used them a bit when I first got the amp - they sound fine - and then I've never used them again, so no strong opinion either way.
Overall I really like it. It's nice having the option of different channels, and the sound is great.