Help - Crackling and Hiss as notes disapate

madseason · March 31, 2017 at 1:51 AM

Hi all! I'm new to Kemper so I hope it's something I'm doing wrong.

Whenever I strum a chord (or pluck a single note for that matter), as the tone begins to dissipate I can hear an ugly crackling associated with what sounds like hiss or hum. I've tried several profiles from TAF, M Britt and also those loaded on the Kemper but I can hear it with many of these. It's a sound that just shouldn't be there. If I were recording and wanted the song to end with guitar fading then it would be very apparent in the recording. I've tried 3 guitars and they all do the same. The profiles seems to be everything from clean to distortion.

I've tried using the noise gate but it only makes a difference if I crank it way up which then kills my tone. I have only had the unit for two weeks and I running on release 5.1.1.xxxxx.

I searched some old threads and saw this was an issues several years ago but was fixed by a software release.

One update - It seems to be in the AMPLIFIER section. When I push the button to turn it off, I can strum the chord and its very quite as it tails off.

Any idea??

Thanks for any help!

GLiDE-BPM · March 31, 2017 at 8:06 PM

I've owned two Kempers (rack and now a toaster) and have never had that anomaly come up...

Good luck chasing that one down...

paults · March 31, 2017 at 9:36 PM

I suggest you send a Support Ticket via the Kemper website

jehadplays · June 13, 2017 at 6:24 PM

Did this get solved? I'm getting the same problem

fourstrk · June 14, 2017 at 10:03 AM

Me too ..

nakedzen · June 14, 2017 at 10:15 AM

Do you have a compressor effect anywhere in the path? Sounds exactly what a high ratio compressor would do.

jehadplays · June 15, 2017 at 12:36 PM

Unfortunately not, it's really quite a strange sound.

richprice79 · July 13, 2017 at 5:56 PM

I had this problem and it just got worse and worse. I finally opened a ticket and shipped the amp to a repair shop yesterday.

Raoul23 · July 15, 2017 at 9:19 PM

Can you post a sound clip

Cyrusfd · August 11, 2017 at 2:39 PM

I've got exactly the same problem when I use the Kemper compressor with a clean profile.
With my xotic (same settings) in front of the kemper I don't have any noise at all.

Fireloogie · August 14, 2017 at 2:11 PM

I got similar issues, soon as I simply hit a note and won't give it a vibrato: That ugly cackling that's often been described here as static noise, hiss...

I love the KPA and the commitment of the whole team, but that one issue seems to be widely spread and it feels no thread being started on this is coming to a solution. Those threads only seem to run dry. Or I missed it. Possible.

Nevertheless, I sent samples to Kemper, they replied it's normal, nothing unusual in my clips. I am still confused because I hear it clearly. Others obviously have the same (or at least very similar) issues and it more than once turned out to be a defective unit. I should open another ticket maybe as it's getting a bit frustrating.

Raoul23 · August 16, 2017 at 10:51 PM

Maybe post a sound clip hear so we can hear also

prestonkeepfer · September 21, 2017 at 1:45 AM

Hey!

I'm having this same issue, but it seems to be random. Fired up my Kemper this afternoon and things were great! But after playing and tweaking for about an hour or two, the crackling returned. I'm almost 100% certain we're experiencing the same thing. It's only on the sustained notes/chords.

Cyrusfd · September 28, 2017 at 8:34 AM

I think that this crackling is caused by the noise gate. The crackling is the result of a fast opening and closing of the gate.

Honkys · September 28, 2017 at 11:24 AM

I noticed the same problem, with purchased or own profiles, these quiet random noise in the decay.
It has nothing to do with noisgate or compressor because I do not use.
In the whole mix, this can be masked.
This sound was similar to a quantization noise, as if a dither were missing.

Cyrusfd · September 28, 2017 at 11:39 AM

I mean the noise gate (build in) on the left of the kemper and not any noise gate in the stomps. Have you already tried to change the threshold to a minimum.

Finally · September 28, 2017 at 9:48 PM

I'd check what Cyrusfd said. Try turning the Noise Gate knob to zero and see if that stops messing with your decay.