EDM-1 H.E. 1 Channel Preamplifier

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  • EDM-1 H.E. 1 Channel Preamplifier by Headway, 3/4 view
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, top view
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, with text decriptions
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, with text descriptions
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, side view
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, side view
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, alternate view
  • EDM-1 H.E. 1 Channel Preamplifier by Headway, accessories
  • EDM-1 HEPLUS model with extra input adapter and special power supply
Our Low Price: $195.00

Price shown may adjust with options selected below (if applicable)


Headway calls the EDM–1 H.E. an Equalizer/Direct Mini Preamplifier with Harmonic Enhancer. Wow, that's a mouthful. But this handy box packs a lot of nice functionality into its diminuitive (3" x 3.25" by 1.1") footprint.
They say: "Multi-function Pre-amplifier with 3 band EQ, Anti-Feedback/hum, Direct Injection, phase reverse, phantom power, FX Loop and Harmonic Enhancer functions for Superior Acoustic Amplification."
Includes our exclusive Gollihur Music tipsheet to get the most out of your purchaseI say, it's a nicely crafted preamp with useful features for most any bassist (or acoustic instrumentalist.) Of course, it's got an appropriate input impedance for acoustic pickups - that's a given, if you're finding in on our site. But it has a simple-to-operate low cut filter to reduce boominess, a straightforward 3-band EQ (Bass/Mid/Treble) for easy "dialing in" and a phase reverse, which can sometimes be a useful tool to improve tone/reduce feedback.
It includes phantom power for the input, for those of you using a small electret mic (like the K&K Golden Bullet, for which this is an EXCELLENT upgrade to the fuctionality of the standard power box). It also has a built in "Harmonic Enhancer" - which you may or may not find useful, as it generally enhances "sparkle" and clarity in the upper ranges. But it can create a bit of magic in the upper range, which can sometimes be a bit "flat" sounding when using piezo pickups.

It also has a legit DI - you can send to your amp, or use an XLR to send directly to "the house" (XLR adapter included) without needing a separate direct box.

There's even a handy mute switch (with simplistic red light/green light indicators) so you can take a break without worrying about creeping feedback.

It's a very nice, well-voiced, preamp. It comes with several accessories (even a little pleather bag!) and is nicely crafted in the EU.


  • Harmonic Enhancer
  • Phase Reverse
  • 3-band Equalizer
  • Ground Lift
  • DI with Balanced Out (on TRS jack, adapter to XLR included)
  • Anti-Feedback features
  • Insert Point
  • Tunable "Range" control reduces boominess
  • Phantom Power for small electret mics - 11v, and optional 18v for true condensers when using 18v optional power adapter
  • Mounts on mic stand, and includes optional belt clip
  • Includes leatherette bag

Special HW-EDM-1-HEPLUS Model

The special HW-EDM-1-HE is an enhanced version of this preamp; it includes an Extra XLR IN to Jack Adapter and an 18v Headway Power Supply Unit. This makes this single channel preamp Condenser Mic friendly!




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Warranty Information

Standard Warranty:
All products sold by RADIAL come with a 1-year limited warranty. This limited warranty protects you against defects in workmanship. The warranty does not cover any consequential or inconsequential damage or any losses. Specifically, if you have a problem due to defect, you must make the arrangements and cover the costs to return the product to us with a copy of the original sales invoice and we will repair the product and return it to you at our cost. All warranty claims require a return authorization. Contact the RADIAL service department for details.

Transferable 3-Year Warranty:
Some RADIAL products come with a 3-Year Transferable Warranty. This means that if you buy the product and decide to sell it, the warranty can be transferred to the person that buys it, thus providing continuous warranty support and added value. This Transferable Warranty follows the same procedures and limitations outlined in the Standard Warranty. This means that if you sell the product, you must provide the buyer with a copy of your original invoice so that he, in turn, may be able to submit this should a warranty claim be required.

Warranty Limitation:
As with all typical warranties, only manufacturing defects are covered. Furthermore, parts that are subject to wear and tear such as switches, potentiometers and tubes are not covered under this warranty. This, however, does not mean that these will not be repaired or replaced free of charge. We pride ourselves in supporting the products we sell and will often exchange these parts free of charge pending the age of the device. This decision will be undertaken by RADIAL and in no way obliges the company to perform such tasks.
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