Hey, first post on this forum so that's pretty cool. I've been playing guitar poorly for two decades so I decided it was time to play bass poorly too and quickly found it to be way more fun.
Anyway, after turning a guitar amp I hated into a Squier bass by way of store credit at my local music store I found myself rapidly in need of an amp. After scouring reviews here and elsewhere I came to the conclusion that I needed a Fender Rumble 40. Then I found this thread and recognized these little guys as a few of the handful of bass amps the same local music store had in stock. I went in today and plugged the cheapest bass I could find on the rack into the three Ampegs they had sitting in the corner (RB110, RB108, BA108) and set them all to roughly the same volume/eq, which was a bit cranked.
I picked a few of the simple bass riffs I'm somewhat confident in and played in a store full of people. Gentle talkbass peeps, I have literally never felt confident doing that with a guitar amp in a store.
Anyway, my emotional journey of loving bass isn't what you're hear to read about. Here's the skinny on the amps.
BA108 - Clean, articulate, loving. Sounded like a decent solid state guitar amp. Lacking in thump. Definitely lacking in rumble. I liked it but it was a little boring. It was impossible to get a bad sound out of it, but it was also impossible to get a...fun sound out of it? It's the amp equivalent of a person you wouldn't kick out of bed. There's nothing wrong with it and it's pretty great, but I wouldn't take it home on purpose.
RB108 - LOUD. Holy crap. I don't know why this thing was so loud but it was, and it sounded good. The 'SGT' switch made it sound like hot water garbage, but it sounded fine without it. Initially I actually liked it the most. It had a solid thump the others lacked, it was louder, it just seemed like an authoritative little amp. I would say there's not a bad sound in it, but I did manage to find one later.
RB110 - I ended up buying this one and walking out with it. Initially I thought I was going to get the little one instead but then I realized what the RB110 had that the RB108 lacked was...room. If I were reviewing some hifi gear I'd call it a sound stage or 'airiness.' It was quieter and less thumpy but overall it just sounded better. As I started playing with the EQ I found the 110 sounded good no matter what I did where the 108 really fell apart if you turned the bass up past 2'oclock or did something atrocious like cranking the mids. It was impossible to make this one sound bad.
As soon as I got home I did what any person who spent too much time playing guitar would do and plugged straight in, hit that distortion switch and dimed the gain and volume and left the EQ flat. It did not disappoint. I don't know how it would stand up in a room with a drummer but I don't care, it stood up just fine to rattling the windows a little bit.