This Pedal is currently available.
Front end of the Subway D800+
Incorporating the most powerful design elements from the Subway D800+, the new Subway+ DI-Preamp gives you virtually all the gain and level control, tone shaping–including a 2-Band semi-parametric MID and interface potential of our most popular Subway D800+ Bass amplifier in a compact DI box that’s hand-built MESA tough.
Like the BASS DI-Preamp, this PLUS version has both PREAMP and DIRECT Balanced XLR Outputs with Pin 1 Lifts, a PRE/POST SOURCE switch for the DIRECT Output and an Unbalanced ¼ PREAMP Output. In addition to the shared features, the PLUS version also incorporates an Effects Loop for seamless interfacing of your outboard processing.
Whether serving as a powerful pocket insurance policy for backup on your self-transporting musical endeavors or an ultra-portable main preamp for rental rig or venue-powered Airline touring , the Subway+ DI-Preamp covers all the bases.
https://www.mesaboogie.com/amplifiers/bass/preamplifier-series/subway-bass-di-preamp-plus/index.html