The MM-20 was part of the "System 20," a group of units that when put together would in give much the same functions as the M-30 8X4 mixer. Instead of assign switches, one had to patch to send signal to a given place. A plus was that any individual unit could be used as a "stand-alone" piece. The Tascam folks figured that this would be a relatively inexpensive way of getting into the multitrack game, especially when coupled with the 22-4 & 22-2 machines. Those already with gear could use the accessory units as add-ons to their existing systems. They were almost right. The gear was good value for the money but the sales force out in the real world didn't understand how to use or sell it so the series did not meet expectations.
Originally Posted by birdie3
The PE-20 eq is my favorite unit of this line. I have a pair of them eq-ing my reverb sends and returns to this day.
The MB-20 meter bridge, was actually the 1st unit in this group as it was originally the companion to the Model 2 and 2A 6X4 mixers. Those mixers sucked but the MB-20 was quite an accurate little device. It was the only TEAC/Tascam meter that was not frequency sensitive so one could use it for calibration. None of their machine or console units could make that claim. That, by a large part, is why so many people bitched about the sound of TASCAM machines. The internal meters were usually only accurate at one frequency and weighted for anything on either side. Using those internal meters for biasing or record/playback eq adjustments was sonic suicide.
Lion Dog Music - Seattle WA