Hello TB!
Aguilar DB659 Tube Bass Preamp in very good condition. Some scratches from rack mounting - excellent operating condition and sounds great.
A direct descendent of the legendary Aguilar DB680, it gives you the famous Aguilar sound in a ready-to-rock, one rackspace unit (1U).
Pair this preamp with any amp for great fat, warm bass tone!
KEY FEATURES:
SPECIFICATIONS:
I've owned this for about 11 years and never thought I would part with it, especially because they are long discontinued and don't come up too often. I'm just trying to get my gear down to one amp and one micro for backup. Someone will be very pleased with this unit. I've paired it with straight power amps and using the FX return of ordinary bass amps; both sounded excellent.
$750 Shipped CONUS; add $25 West of the Mississippi.
Thanks!

Aguilar DB659 Tube Bass Preamp in very good condition. Some scratches from rack mounting - excellent operating condition and sounds great.
A direct descendent of the legendary Aguilar DB680, it gives you the famous Aguilar sound in a ready-to-rock, one rackspace unit (1U).
Pair this preamp with any amp for great fat, warm bass tone!
KEY FEATURES:
- Inputs for both passive and active basses
- All tube gain stages and transformer-balanced output
- Tube-driven 3-band EQ
- Parallel/series effects loop with gain control for using studio effects units or stomp boxes
- Bright switch
SPECIFICATIONS:
- Active/Passive inputs: One active and one passive input, for matching with the output gain of your bass. Controls the input gain to the preamp.
- Deep Switch: The deep switch adds 3dB of broad band boost at 30 HZ. This is the instant fatness switch that makes bass sound warm and full.
- Equalization: Treble: Tube driven shelving type, boosts/cuts up to 12 dB. The center frequency is set at 4kHz. Bass: Tube driven shelving type, boosts/cuts up to 12 dB. The center frequency is set at 40Hz. Midrange: Tube driven shelving centered at 400Hz. This pot is very smooth and useful for scooping the mids for funk, or adding mids that are clear and musical.
- Bright Switch: This switch is a passive RC pre-emphasis circuit @ 5-7 kHz. The bright switch will add a brighter timbre to the entire range of your bass.
- Effects Loop: The Send pot is push/pull for line or instrument level. This allows you to use a studio efx unit (line level) or a stomp box (requires instrument level) in the efx loop. The parallel/series pot is push/pull for parallel or series option.
- Master Output Control: This pot controls the output level to your power amp.
- Noise: > -80 dB (unweighted)
- Fuses: One external 1/4 amp slo-blo for 100-120 volt operation, or one 1/8 amp slo-blo for 220-240 VAC operation.
- Preamp tubes: 2 - 12AX7s.
- Power supply: Regulated high voltage plate supply, regulated filament supply for lowest noise.
- Outputs: 2 unbalanced 1/4" outputs, one XLR balanced output with Jensen transformer.
- Inputs: One active input -39kOhm, one passive input -1meg ohm.
- EFX Send: Variable send level.
- EFX Return: One return with -20 dB to 0 dB compatibility.
- Weight: 6 lbs.
- Chassis: Aluminum construction provides sturdiness without excessive weight
I've owned this for about 11 years and never thought I would part with it, especially because they are long discontinued and don't come up too often. I'm just trying to get my gear down to one amp and one micro for backup. Someone will be very pleased with this unit. I've paired it with straight power amps and using the FX return of ordinary bass amps; both sounded excellent.
$750 Shipped CONUS; add $25 West of the Mississippi.
Thanks!