I'm typically not a fan of free plugins, but the
Ignite Amps SHB-1 sounds pretty good on DI bass recordings.
Toughens up and rounds out the dynamics a bit... without altering the character too much.
Sounds good without any cab sim.
A bit like a virtual SansAmp RPM... although better sounding to my ears.
Was hoping to like their Pultec and Guitar amp plugs... but didn't really care for those.