The loop and reloop functions allow you to make seamless cuts in the middle of the music. The blue LED level meter of the DMX-B1 lets you know visually when frequencies are peaking. The illuminated control buttons of this mixer make it easy to adjust things in the dark. The anti-shock system of the DMX-B1 keeps your CDs from skipping when the table is rocking. The DMX-B1 lacks the dual USB inputs of the closely related DMX-BP3, which allow you to browse your laptop playlists. The DMX-B1 has the same specs as the identically priced DMX-S1, but with a different external design. The Technical Pro DMX-B1 is capable of outputting to XLR (balanced) or RCA (master, record line).