Tervetuloa TalkBass keskustelufoorumiin KF2B
Well, nothing against the aforementioned combos, but IMHO if You want a good 'ol tone while lots of power/volume isn't important, any and all (except perhaps for Ibanez Valbee) of the small tube combo offerings from plethora of manufacturers should fit the bill very nicely.
You should be able to test most of them in stores, providing that You live near to a decent sized city
. If not: Posti kulkee ja Kusti polkee
You'll probably need to swap the speaker with something more bass frequency friendly, but that's about it.
If it's Spartan You're after, and have an active bass, you can usually skip the pre and insert the headphones directly to the bass.
It doesn't always work, due to the different methods of switching the power on and off, but that's how I played my bass in the barracks while in the army back in the early 90's.
IIRC I modded mine with a jack that used switching contacts instead of the R & S of the plug to make the connection.
Without additional tinkering, You'll only hear from one pad though...
Mono M to stereo F 1/4" to 1/4" adapter works around the modding, if You can find (or make) one.
A simple DBX, ART, Behrinkeli etc. tube pre works well with headphones also if a combo isn't necessary.