EDB 2 H.E. 2-channel Preamplifier

It’s kind of hard to get into the totality of all that this box can do without having your eyes glaze over, but I’ll try…
As I mentioned above, it has an appropriate input with phantom power, so it can run most any condenser mics (the DPA 4099B mic works very well). You can blend that with a piezo-electric OR magnetic pickup plugged into channel 1; so, a Realist, a Bass Max, a Full Circle, a Headway Band, a Krivo – even the Ehrlund EAP (I have heard from several people who have used the Headway in place of the OEM preamp from Ehrlund.)

Or, you could blend two pickups; so if you want to blend a Realist and a Krivo, or a Bass Max and a BP-100, or… well, you get the idea.

Or, you can use this preamp in place of one of the K&K Systems – like the Bass Master Rockabilly or the Bass Master Pro – because the channel-2 1/4″ input can accept a TRS (stereo) input cable and split out the two channels for you to blend as you see fit. We have also confirmed through testing that it works perfectly to replace the preamp in the Golden Trinity Microphone series, so it is an excellent upgrade to those mic/pickup setups. So it replaces the pocket preamp included with those systems (and we even sell the transducer networks separately, if you want to assemble a custom system – just ask!)

It has an effects loop on channel 1; this could be handy when using for rockabilly – put a little slap-back reverb on your “clicky” pickup without muddying up the main bass tone. Or, perhaps put a compressor or other effect on one of your inputs. (Loop is only available to channel 1 and cannot be assigned to channel 2).

You can even use it for jamming along with tunes at home – it has a 1/8″ auxillary input that you can use for i-devices, MP3 players, and the like. Cool!

The preamp has a 1/4″ output for sending to your stage amp, as well as a DI output (for sending to the house soundboard/PA) on a standard XLR with a ground lift. There are separate gain controls for each channel, and a master volume (with a mute switch for each channel so you could even use the same preamp to swap between instruments).

The semi-parametric, fixed-depth (-12dB) notch filter allows you to “dial in” problem frequencies that are causing feedback or wolf tones, and notch them out with a very thin frequency cut; you can adjust that frequency, as well as the “Q” (which is how wide a swath you’re cutting) to kill feedback with surgical precision. It can be applied to one of the two channels (you’d usually use it on the mic channel when using a mic.)

There is a NEW five-band interactive Baxandall EQ (Bass, Low Mid, High Mid, Presence, Treble) for each channel (the old model only had one EQ.) The controls can boost or cut, and have clear “detents” at their midpoints to indicate the flat setting.

You can flip the phase of either channel 1 or channel 2 (or neither) to improve tone, correct phasing issues, or fight feedback.

Each channel on the preamp has a “range” switch – most of my customers will set it to “Bass,” I would think – to optimize the tone and response for your instrument; it applies a low-cut filter based on the instrument used, in order to remove the rumble and noise of subsonics.

The preamp can be powered by the 18V, 200mA power supply or two 9V batteries (included).

The case for the unit was thoughtfully designed with a pre-threaded mounting hole on the bottom – you can screw it right onto a standard mic stand for easy access!

The EDB-2 boasts Refined Class “A” Inputs and Pro Audio IC Components, easy to read Pro-Audio design layout and sturdy metal housings built to withstand “Life on the Road.”

It also features a new harmonic enhancer. This thing is a real Swiss Army Knife!