The Pigtronix Rototron makes no bones about what it does: it's a Leslie simulator through and through. However, it offers a great deal of fluid control very much akin to ratcheting the levers of an actual Leslie unit.
The B7K is the big brother to the B3K—an already great bass drive and preamp. This time around, the "preamp" aspect has been significantly beefed up as well as its outboard feature set. For bassists and guitarists that demand ultimate tone-shaping ability, the B7K offers a FOUR-band equalizer