Bass preamp with versatile tone shaping capabilities - Model: SansAmp Bass Driver DI - Brand: TECH 21 - Output: XLR output, Line output, Instrument output - Controls: Level, Blend, Treble, Bass, Drive, Presence - Input: Input jack, DC power jack - Made in: USA Thank you for viewing. The unit includes only the main body. I purchased it new. The manufacturing year is unknown. There is no scratchiness, and I have confirmed that it works properly. This is a discontinued model.