I would go with a Soldano Astro 20
Technically a two channel amp, but it has 4 footswitchable galaxies/channels, so I consider it a 4 channel amp, but it only has two channels to tweak tone and gain.
I have mine set for clean cleans, gritty cleans to blues, crunch, and solo.
Such a versatile amp with great tone.
I will try to do some YouTube videos with it this weekend, I have a Gibson Les Paul Standard 50s and a Fender Player II Modified HSS Strat with me.
I do have a bunch of them up already from a while ago.