DB Systems has used equipment for sale from time to time.  All items are refurbished and tested to new specifications and come with a 1 year factory warranty.  Prices are approximate depending on the state of the unit.

As of Mr24 the following are available:
DB-lB/2A PRECISION PREAMPLIFIER 8-1/2" Panel, with solid walnut cabinet SN:1252328 995
DBP-3 Solid Walnut Cabinet for preamp (8-1/2" panel) Has dent in front 60
DB-3 18 dB, 80Hz crossover, SN: 3070941, tin jacks worn but serviceable 420
DB-6A-M Mono amplifier, SN: 6110173 Balanced in, Speakon out as well as binding posts. Can be configured for normal M/S 1100
DB-2A cosmetic imperfections 320
DB-2A prototype in gray Bud Chassis 250
DB-3 Snell A-2 430
DB-3, 2-way 18dB Butterworth , your choice of one frequency, DB-2A required 450
DB-3, 3 way 18 dB Butterworth your choice of 2 frequencies DB-2A required 520
DB-3, 2 way, Butterworth, 150 Hz, DB-2A required 400
DB-500e  Crossover--special 3 channel Home Theater crossover with 24 dB L/R low pass (summed all three channels), 12 dB BW high pass (3 channels), switch for Academy rolloff.  500 + psy
DB-3XL Switchable Crossover Front panel selectable frequencies of
50, 70, 100 and 150 Hz, 18 dB Butterworth slope, level controls on front,
rack mount, internal power supply. Custom built for dealer demos. Spec Sheet   595
DBP-10 Phono Alignment Protractor 30