Tech 21 SansAmp Version 2 This is a standard effector for bass. There are no box or accessories, only the main unit. I bought it new and used it for about six months. There are some scratches, but there are no problems with the operation. The MID control, which was not available on the old model, has been newly installed, and the BASS control can also adjust the band, allowing for more detailed settings. ■ Bass preamp / direct box ■ Version 2 ■ INPUT: Phone jack for instrument input ■ PARALLEL OUTPUT: Output the same signal as the input ■ BALANCED XLR OUTPUT: Low impedance balanced output ■ Controls: LEVEL, BLEND, TREBLE, PRESENCE, DRIVE, MID, BASS ■ MID 500/1000Hz switch ■ BASS 40/80Hz switch ■ Power supply: 9V battery, 9VDC center minus ■ Size: W95 x H120 x D50mm A switch has been added to set the low-frequency range to support multi-string basses. The mid-range setting is also possible, making it a new standard for even more refined bass preamps.