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Thanks for the help! Well, I LIKE having a cab behind or sometimes in front of me interacting with the guitar, and I like the traditional cab look. I suspect this is an error in their documentation.

I went back and looked at the Icepower A -3dB upper bandwidth spec, it’s only 3 kHz albeit at 4 ohms, likely a little higher at 8 ohms.

ghentaudio DIY Cable-Set for ICEpower A module

My bandmates have stopped complaining about the blanket-over-the-amp tone from my cab, another benefit of higher bandwidth. Nice that you have found your tone.

I have purchased a KPA unpowered rack unit and intend to use that with the GTFX for live use, and I’ll use the toaster with the Quilter for rehearsals and recording. There is actually no need to worry about the sound of a todays solid state amp.

Below is the exact communication from their rep, Paul Meister. It comes down to what is in there. That explained the more sparkly and open sound, it was getting close to the direct-through-PA tone I was experiencing. When the ASP was designed a couple of years later, they thought that they would get more full range applications, so it was designed up to 20khz and everything since then and going forward is full bandwidth.

Going through the main out direct to the PA sounded nice and sparkly all the time, but the cab sound was dark no matter what I did. So all’s well that ends well. It is likely that you have looked up the phase responce graph, instead of the frequency responce. Now if I could only play better Kemper Profiler Forum Private forum Profiler related discussions.


Any errata sheets for the data sheet? It is not an error in the datasheet.

Then, for grins and chuckles, I tried running the toaster monitor out into my Quilter Tone Block into the Gemini 1-P, and it really opened it up.

Top curve is amplitude response. It sounds darned near just like the PA tone.

Icepower 1000A Bandwidth

Hopefully this post will not upset too many Power Head fans, but I would like to post my observations about the Power Head with the Icepower A amplifier and the Power Rack as well I assume, since they use the same power amplifier. Can you please tell me which one it is? However, it doesn’t matter, since we obviously do not use the A, otherwise we would have communicated the W power. Ah, that makes sense. So glad I bought the Matrix. If I had known then what I know now, I would not have purchased the Powerhead, I would have just bought the unpowered version and used an external power amp with wider BW for driving a cab, as well as just biting the bullet and buying a good FRFR cab.

Your browser has JavaScript disabled. The A was designed 15 years ago with only low frequency applications in mind.

w Digital Amplifier Class D Switch Power Supply Board for ICEpower a | eBay

That will put it to rest. This is as shown on page 9 pf v1. I was using a Weber Vintage speaker at the time in an old Lopoline 1X12 convertible cab, as well as some Carvin 2X12 cabs.

However, it must icepoaer mentioned, that you have probably misread the specs of the Icepower products. Every other doc shows a responce beyond 20 or 30 kHz.


I figured the issue was the speaker. We have never got a report in the past that our build in power amps attenuate the highs. I went through several setups too before I fell in love with the same rig.

I would like to check and see if the typical -3dB bandwidth at 4 ohm loading value of 3 kHz, as given in the data sheet see highlighted line on page 5 of attachment is a correct value? Anyway, I thought I should share the results of my experience with icepoaer all, it may help someone else shorten their path to tonal Nirvana with their Kemper.

Take it as you will. Thanks for reaching out.

My intention was to use it as a standalone amplifier to drive a cab and eliminate my pedalboard and boat-anchor tube amp. I was for certain not looking at the phase response, it was definitely the frequency response curve. Icpower you would like to use all features of this site, it is mandatory to enable JavaScript. We supply the A. It seems on the low side. This agrees with the 30 kHz value. I am wondering why there are so few Kemper users endorsing such a great product. Since I bought it, I have had many comments from fellow bandmates in the bands I have been in or am in regarding how dark the sound was from the cab, no high end.

The differences are hardly distinguishable in general. Also, are there any – 3dB BW measurements at 8 ohm loading for the A? We’re talking pre-Armstrong here! The power amps go up iceepower 30 kHz with an error of less that a dB, according to the specs.