2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Aguilar DB 680 is the ultimate bass preamp. Great for live playing situations, the DB 680 is also a "must-have" in major recording studios around the world. Ten tube gain stages, combined with extensive tonal shaping capabilities, give the DB 680 unparalleled versatility. The Aguilar tone that has become so essential to many producers is just one reason the 680 is so at home in the studio.