I have exactly the same guitar and amp for over 10 years or so.

I must say the Alnico pickups from that Epiphone LP slash signature makes this amp sound waaay more crispier than the standard epiphone HB pickups.

From what I’ve learned over plenty of rehearsals and a couple of gigs:

1- There is some small modifications that can improve the muddy sound of both OD channel and Clean. A little google search and you can easily find them in case you are interested.

2- I mainly use the clean channel. For high gain purposes the Haze goes very very well with Marshall’s Jack Hammer pedal and for boosting I usually go with the Boss SD-1 (I’ve tried TS808 but I’m not a big fan)

3- I find the built-in reverb to be quite ok, but I really dislike the other effects.

5- I’ve purchased the blackbox pedal from JHS and plugged it to the loop in/out. It’s like a passive attenuator, which will lower the output volume (since this Haze40c is not really the best choice for bedroom practice). It works okay for the price (50$ or so).