Aguliar DB924 outboard preamp **sold** $110 shipped CONUS. "The DB 924 FET preamp features the circuitry of the innovative OBP-1 onboard preamp in a sturdy and compact package. The sound is transparent and warm and has true dynamic headroom. The DB 924 offers two bands of boost occuring at 40Hz (bass) and 4Khz (treble). In addition, high end loss resulting from long cable runs is eliminated through a well buffered design which provides a low output impedance. Specifications: All FET design Volume, treble, and bass controlo Two bands of boost: 40Hz (bass); 4KHz (treble) Maximum boost 18db 18 volt system, batteries only. Dimensions: 4 1/2" length. 3 1/2" width, 5/8' depth.