I already have a classic tube preamp DI. First edition VTBP-201. Some of the labels are not even screen printed but have stickers and has bi-amp crossover as well. It is a 1U rack however. But for practicality I use the DI on a my 3 bass preamps Headway EBD2, Radial Bassbone or the NUX MLD. Also have a WARM Audio DI and an older Radial JDI - totally idiot proof but no added bells and whistles.
Impressed with the NUX MLD. You can set the HPF in software. Has a choice of 3 preamp models, has 8 cab IRs and you can load 8 more. You set these things once via software but for live situation the 3 band EQ and the drive option are pretty useable. The lack of tweaking without the PC is actually a blessings because it is a set once affair and the EQ helps for the room and stage. Also it is light yet sturdy and not too big and uses 9 volt power. And the DI is not bad - mic level but has a lot of output. You can choose to not put the models and IR out the DI with a physical switch . I put effects if needed before it but I am not a OD or muff guy so haven't tried those only compressor and envelop filter and wah.