Guitar Center has the best sale I have ever seen on these. I picked one up on Friday. I like the "Old School" control & the "Mute" switch. I have been using a Little Mark III for about ten years. At $650 there wasn't a reason to switch but at $419, I couldn't pass it up. I'll give it a better workout on Tuesday with my two 15" bottoms.......
https://www.guitarcenter.com/Markbass/Little-Mark-IV-500-Watt-Bass-Amplifier-Head-Black-1500000357611.gc
That's a good deal!
I've not played an awful lot of their rigs but in a "open mic" session I used to play in (backing band for it), the regular rig was an 18, a pair of 8's and a 500w head...? all separates... stunning sound...
UK prices are pretty steep though...
It worked well with my (2) 15"s yesterday. The "Old School" knob really smooths everything out.
(https://i.imgur.com/XAMDf2s.jpg)
Those little DC's are great basses.