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Aguilar DB 680 Tube Bass Preamp

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The sound is warm with a smooth feel. The warmth and sweetness in the tone are produced by 5 vacuum tubes that give the preamp 2nd harmonic emphasis. Players will find that the Aguilar preamp responds... Click To Read More About This Product

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The sound is warm with a smooth feel. The warmth and sweetness in the tone are produced by 5 vacuum tubes that give the preamp 2nd harmonic emphasis. Players will find that the Aguilar preamp responds more to their use of dynamics than other models.


2 switchable inputs, active/passive mode, dual parametric EQs, plus treble and bass shelving controls
A unique "deep" control employs a proprietary, tube-driven resonance circuit to provide 2 levels of boost in the 30Hz region.
This circuitry gives unparalleled depth when used with 5-string basses and adds superb, sweet thickness to vintage-style instruments
Pro Coverage
Aguilar Amplification's DB series of electronics are covered under warranty to the original owner for a period of ten years from the date of purchase against defects in materials and workmanship. AG series electronics, GS series speaker cabinets, and S series speaker cabinets are covered by the warranty for a period of 3 years. Tubes are covered by the warranty for a period of six months.

The warranty period starts from the date of purchase from an authorized Aguilar dealer. Your sales slip or purchase invoice is necessary for warranty service.

Before sending your unit to Aguilar for repair, you must receive a return authorization number from us. Contact us via phone, fax, or email ( with a description of the problem. We will then issue to you a return authorization number.

You are responsible for all shipping charges. You must ship the unit to us freight prepaid. We will return the unit to you freight collect. If the unit is being sent from outside the United States you will also be responsible for customs brokerage, if applicable. Please check with your freight forwarder for assistance.

Aguilar Amplification LLC is not responsible for shipping damage, either to or from our service center. Claims must be filed with the carrier.

The only company authorized to perform work under this warranty is Aguilar Amplification LLC of New York, NY.

  • Customer Reviews

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by PowerReviews

(based on 2 reviews)

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Reviewed by 2 customers

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(1 of 1 customers found this review helpful)


Clean & Phat

By Kevin Glenn

from Palatine, IL

The Aguilar is preferct for those that want their bass tightly controlled and phat sounding. It is not possible to get any tube growl out of this preamp, even though Aguilar mentions the 10 Tube stages. The mids are solid sounding, no nasally-honky mids. The highs are clear, but never biting or obnoxious sounding. The lows are definitely solid. I am more of an Ampeg guy and that is why I sold this pre-amp. I prefer a dirtier all Tube Amp to get the sound I want. If you want a clean and controlled bass tone, this is the unit to get. If you want tube growl and real tube feel, get an all-tube amp.

(1 of 1 customers found this review helpful)


The smoothest, sweetest Bass Preamp ever

By Dogstarr1

from Atlanta, GA

I've been playing bass since I was a kid and I've run through a lot of great tube preamps, as well as far too many solid state pre's for my taste. Every "classic" Preamp is a classic for a reason and the sound you get from them tends to have more of it's own character than what you find in solid state amps and preamps. The character of the Aguilar DB 680 is smooth, rich, full and absolutely beautiful. I don't think your bass can sound "better" through another great preamp, just different. If you're seriously looking at the Aguilar DB 680, then you're serious about bass and you should know this is a serious tool; The EQ is incredibly flexible, with dual parametric and tube driven shelving. The FX loop is, of course, tube buffered with stereo returns. You have unbalanced 1/4" line level, seperate 1/4" bi-amp outs and a balanced XLR out. It also has a nifty feature that's another output but is called an Input Through, what it does is act like a splitter sending your signal to another amp or preamp while still running your bass through the DB 680; with this you can run in parallel, so you could actually use all the great features of the Aguilar DB 680 and, for instance, run it next to an Ampeg SVT-CL(or SVPCL) and really have a dream rig. This one remains on my wish list for now, but that will certainly change within the next year or two. If you try it, you'll buy it too.

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