Bob Gollihur - Gollihur Music
Bob Gollihur

Gollihur Music - Upright Bass Specialists
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Mark Gollihur - Gollihur Music
Mark Gollihur

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Amplifiers & SpeakersAmplifier Heads

Euphonic Audio iAMP PRO Musical Instrument Amplifier

Manufactured by: Euphonic Audio

Continental US - larger items may carry a partial shipping charge to AK, HI and PR
  $1,195.00  

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iAMP Pro



The new iAMP PRO starts with the classic, wonderfully flexible iAMP front end and updates it with a lightweight monster power section. I've owned iAMP800 ser#0005 since early 2003, and that wonderful EQ section has been a key ingredient in my personal sound as well as having tamed the many "Stage From Hell" situations I've encountered.

The Preamp Circuitry
The iAMP Pro preamplifier circuitry consists of specially selected low noise, high bandwidth integrated circuits and support components, which are assembled onto an FR-4 epoxy glass circuit board by automated equipment. In the USA! Each electronic component is individually checked for proper function by an automated testing system proprietary to EA. The complete circuit is then checked for proper operation. Connectors are used, but used sparingly. DC coupling for the audio signal path is maintained in the crucial areas. The power section is a proven module that presents a clean and uncolored sound — as close as possible to the ideal straight line that produces the same sound as the input, only louder.

  • Uses: acoustic instruments, bass, and keyboards
  • Inputs: 1/4" Active and Passive jacks with LED overload indicator, Mini Stereo In with Volume (CD, tape)
  • Input Impedance: Active input: 22K ohms; Passive input: 1 Megohm
  • Controls: Input Volume, EQ In/Out, Master Volume, DI Level, Speaker On/Off, DI Output On/Off
  • EQ: Lo, Lo-Mid, Hi-Mid, and Hi: all with boost/cut and variable frequency controls. Lo-Mid and Hi-Mid have Half / Full Octave Q switch
  • EQ Presets: Deep, Contour 1, Contour 2, Bright
  • Effects Loop: Series Post EQ with level control
  • Outputs: Two parallel 1/4" speaker, 1/4" Stereo Headphone, 1/4" Tuner, XLR balanced DI
  • Frequency Response: 20Hz to20kHz ±3dB
  • Onboard limiter
  • Power Output: 1200w/4 ohms, 600w/8 ohms
  • Size: approximately 3.5"H x 14"W x 9"D
  • 100/120 - 240 volt power using internal selection
  • Weight: approx 9 lbs.
  • Cool Feature: Play along with a CD without anyone hearing! Plug in your instrument, connect CD player to the Stereo Mini In, connect headphones to the headphone jack, hit the Speaker Off switch, set the volume/blend levels for your instrument and CD using the respective Input Volume controls, set the overall headphone level with the Master Volume, and presto... private practice session.




The center EQ section may look a little complicated, but it is pretty intuitive once you understand its concepts and interactively wrap your ears around its effects. The Deep and Contour II presets are favorites of mine, and Contour I and Bright are very nice as well. The four part section section has controls for Bass, Low-Midrange, High Midrange, and High, with a range -15db to +15db. The slider beneath each lets you select the semi-parametric center frequency that the knob affects, so you can very precisely choose and affect favorite frequency bands to dial in your sound - or dial out problem frequencies when on a "stage from hell" that might be causing "boominess" or "honking." The two midrange bands allow you to select the width ("Q") of the band of frequencies to affect, either 1/2 or 1 full octave.

As an example-- getting too much finger noise from your double bass sound?? Move the High Mid slider to 1kZ, and use the dial above to subtract some of that noise! Knowing the "magic" frequencies helps, but the bottom line is: you should use your ears to make these adjustments. The EQ section can be switched in and out, which is very helpful if you are switching between two basses, and one needs more sound tailoring than the other.

The rest of the features are pretty self-explanatory, and of course for optional use, but please email me if you have any questions. I have been regularly gigging with an iAMP 800 for several years now!.


EA thinks you're smart: They use REAL Volume Controls

Rather than have all the volume in the first turn of the knob, EA uses potentiometers that are more linear. This means you may actually have to turn the master volume all the way up to the 3 o'clock position when things get really, really loud. This gives you a more realistic measure of how much power you are using. Most other amp manufacturers (and think stereos, car radios, etc.) use a taper that puts all the volume up front. This is to impress unsuspecting customers trying gear in stores. "Wow, listen to how loud it is, and it's only on 2? ," he says, and thinks to himself, ”This thing must get really loud!!”

Nope, they're just fooling with you. It pretty much stops getting louder around 5, and then only gets more distorted. EA thinks it's better to use the entire volume control. You'll otherwise never actually attain the mythic eleven.

Is this an EA Exclusive?? We're not sure, but we think others should follow their example. Euphonic Audio says respect your customers, don't try to fool them.





This item is made in USA! Click for more "Made in America" items!


  $1,195.00  


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Here is what some of our customers think about this product:
Just to let you know the IAMP PRO is a keeper. I thank you for letting me try the amp for 7 days. It is way better than the [competitor's amp] which I am selling. Thanks for your service!
Andrew G (Feb 2011)
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