Here is the performance review of the Tech 21 Sans Amp Bass Driver Deluxe I promised earlier:
I've had it for about a month and have used it at home, at rehearsal and live.
The three separate channels are easy to program. As a starting point, I used the suggested reference control settings in the owner's manual and tweaked them as desired until each patch was optimized for the instrument and the 3 output levels were balanced. If you are like me, this will take some trial and error, so I suggest making notes so you can quickly re-create previous settings if you need to edit them.
Since I am partial to tube amps, I chose Fat Tube, SVT and Slap and modified each as desired for a MusicMan Sting Ray 5 (Alembic Europa 5 on order - can't wait). When a channel setting was ready to save, I pushed the corresponding switch twice quickly (click/click) and, presto, it was programmed.
Trial test was performed using my AER Amp One. I plugged the 1/4 output jack of the DI into the effect return on the amp and by-passed the amp's tone controls. Master and compressor were still operational. Worked like a charm. All 3 tones sounded like I expected.
Next test was at rehearsal. I plugged the 1/4 DI output jack directly into the padded input of my SWR 750X, set the tone controls flat and was rewarded with 3 punchy (and different) tones from the DI that sat nicely in the band mix.
Final test was live, direct into a PA mixer via XLR output with no stage rig. Once gain, the DI worked great, however, the 3 individual tones through the powered monitor wedge did not seem to retain as much of their unique character as they do through an amp. I attribute this to the quality of the monitor speakers. But each tone was punchy with just enough high-end bite to cut through without being harsh or clacky.
All-in-all, this product is a winner. Reasonably priced, light weight, built like a tank, easy to use and intelligently engineered.
Will it replace thousands of dollars worth of stage gear? Probably not, but the comments I have received from my bandmates and the audience thus far have indicated that the bass is prominent and distinct in the mix without being overpowering and that is what I'm looking for in this project.