I bought this amp after trying it out at my friends, as i wanted small tube amp and simple rig. Before buying this one i also tried DSL1 but it couldn't compare to DSL5. I use it mainly to play metal and AC/DC riffs, and to use clean channel as pedal platform.
The build quality is solid, sounds really good for the money. Clean channel is great and takes pedals well. Ultra gain channel rocks on it own, but if you put tube screamer type pedal in front delivers really good metal tone.
I play it mostly on Ultra gain cannel on 0,5W option volume at 12 O'clock, its loud enough for the room but quiet enough not to trouble my neighbors. I can play it on 5W as well but can't go above 9 O'clock as it gets to loud.
Effects loop and headphones are a cool features and works fine, sound quality on headphones is good, but before using it you need to unplug the speaker.
EQ reacts well to changes, its not to sensitive, and not to wide.
The amp comes with original footswitch one button to select channel and second to turn on /off effects loop which is really good if you need to put some effects after the amp preamp.
On the minus side the only one i can think of it is a bit to heavy, for a smaller combo amp like this.
Conclusion, if you are looking for small tube amp for rock, metal to have one two solid tones and simple rig this is definitely for you, you can play at home and on small gigs.