Welcome back old thread, we missed ya 🙂
I started gigging a UB-804 a couple of weeks ago. Really liking it a lot. I'm an EB player not URB. I switch between a short scale EB and the UB-804 throughout the night. Depends on the groove and how challenging my vocal part is as the which I switch too.
I'm running a small pedal board with wireless receiver for the EB into a Korg 2 channel tuner the handles the A/B switching. Output goes to a SushiboxFX Underground Accellerator. That brings up the level for the UB and provides a bass boost and mids boost. That is off for the EB so I have a 2 button tap damce when switching.
From the Sushibox I go to a Cali 76 Compact Bass Compressor and into a Genzler Magellan preamp. That is the major tone for EB for the room and is my DI.
Looking forward to trying the UB through an HX Stomp loaded with the 3Sigma German Bass IR's soon. The Hx is on a board that also has a Future Impact V4 which sends midi note out to a Moog Minitaur synth. One of these days I'll rosin up the bow and see how that drives the synth. I doubt that combinatiion will ever see a gig but it may be fun at home. Mostly the Moog will be driven from Roland PK bass pedals...
Anyway, another happy UB-804 customer here.