A Classic Updated! The MESA/Boogie® Bass 400+, the apex model of MESA’s long-running and storied tube bass amplifier line, reigned supreme throughout the 80s and 90s for those looking to upgrade their tone with a boutique-class tube Head. With a supremely musical tube preamp, powerful 7-Band Graphic EQ, mighty bank of 12x 6L6 output section, and a power supply ready to deliver instantaneous pitch, punch, and power on demand, amazing bass tone was a given. Top artists from jazz to R&B, funk, and blues to stadium rock, including Sir Paul, chose the 400+ for tone, on stage and in the studio, citing its defined attack, clear pitch, and exciting, lead-the-band dynamic content. Now, the classic gets an update, keeping pace with the times and modern bassists’ needs while retaining all the nuanced tone of the original, yet without the cumbersome size and weight. Introducing the MESA/Boogie Bass-800D, the Class D-powered imagining of the B400+, with its sound and attributes combined with highlights from the successful Subway line of bass offerings. The tube preamp follows architecture and cues from the 400+, along with Boogie® Channel topography from the popular Subway TT-800. From there, added gain and further tweaks are included to achieve an even warmer, tube-enhanced character and further capability for subtle, musically relevant overdrive. The 400’s Graphic EQ has been retired in favor of more relevant, simplicity-minded switches offering voicing options proven perfect and pre