My Lil Dawg Champster arrived Tuesday. Stock 4 ohm 8" speaker. Jim said it can run an 8 ohm load as well so I can tap it through a 1×12 cab. I've been playing on it all week, trying out speakers and tubes. What a cool little amp! I've been wanting to get that Champ sound forever and I finally have it! It screams raw dirty, honking blues like nothing else. Running it through a 1×12 gives a tad more bass. Not much though and it doesn't seem any louder to me. Maybe with an efficient 4 ohm 12" speaker? I dunno. I might try that at some point but for now I'm just digging this thing at bedroom(really loud bedroom) levels. It sounds best to me fully cranked with wide open controls on my tele. It doesn't take much tone roll of and the amp dies down and losses most of the dirt even full throttle. Having a little more gain on tap might not be a bad thing but at least you can still slam out full chords at max volume and not have it turn to mush which it would do if there was any more gain. It might still do that with hot humbuckers though. Running it below about 9 on the dial is pretty dull sounding. I wouldn't use this amp for cleans but I've got other amps for that. This thing just wants to scream so scream it shall. Fits right in next to my 5e3.