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, SN:1252328 700
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
DBR-3XL Switchable 18 dB crossover. Has power supply, rack mount, 50, 75, 100, 150 Hz. 665
DB-4B Moving Coil Pre-Preamplifier, requires DB-2A power Supply 310
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
DBP-10 Phono Alignment Protractor 30