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iTwo - allway have a background noise

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Hi Folks,

when just a instrument cable is connected to the iTwo (or also with a e-guitar) I allways have a loud background noise (this happens on both channels).
I tried 2 different guitars and 4 different cables.

The noise is there, no matter if the iTwo is connect to MAC, PC or iPad 4.

You can listen to that noise on zippyshare

This is a wiring diagram how I connect with iPad 4:
Image


Some presets on Aplitube 3 I can not use, cause the noise is too loud!

With a 48v MIC there is no noise.

Thank you,
Herb
PC: Asus H97M-Plus, i5-4690, HD4600 Graphic, 32GB RAM, SSD 850 Evo 256GB, 4TB WD SATA
Mobile: Lenovo Thinkpad T410s, i7 640M, nVidia Quadro NVS 3100M, 8GB RAM, 256DB SSD
Both: Windows 8.1
Apple: iPad 4 32GB; Mac mini i5 (Mavericks), 8GB RAM, 128GB SSD
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by cristofe on Thu Feb 12, 2015 12:58 pm
With a 48v MIC there is no noise.


Then the problem is NOT your iTwo!!

Your guitars may not be properly shielded. And as for some Amplitube presets being noisy....well they just are. Many high gain settings in ALL ampsims are noisy....just like the same settings on real amps
https://soundcloud.com/cristofe-chabot/sets/main

PC'S: HP XW6000 Dual 3.2GHz Intel Xeon, 8GB RAM WinXP SP2 HP 6005 Pro AMD Athalon X2 B24 3.0Ghz, 4GB RAM Win8 Pro Dell Latitude E6410 Laptop Intel i5 2.67Ghz 8GB RAM Win7 Pro x64 Audio Interfaces: Terratec EWS88MT PCI (2), Audiobox 1818VSL USB & Firestudio 26x26 Firewire, Line 6 PodXT, Roland GS-10, NI Rig Kontrol 3

Monitors: Yamaha HS50M's DAW: S1 3.2.1 Pro

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by cyaneo on Thu Feb 12, 2015 1:30 pm
But: why is there that noise, when JUST the guitar-cable is connected (remember: I try 2 guitars and 4 good-to-hight-quality cables)?
Today I've tested another Audiointerface (not an iTwo) - same cables, same guitars and: NO noise...
PC: Asus H97M-Plus, i5-4690, HD4600 Graphic, 32GB RAM, SSD 850 Evo 256GB, 4TB WD SATA
Mobile: Lenovo Thinkpad T410s, i7 640M, nVidia Quadro NVS 3100M, 8GB RAM, 256DB SSD
Both: Windows 8.1
Apple: iPad 4 32GB; Mac mini i5 (Mavericks), 8GB RAM, 128GB SSD
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by jasonpinson on Fri Jan 01, 2016 11:44 pm
In your daw go to the audio options and turn off the multiprocessing. For some reason I had the same problem until I switched it off. And I updated the firmware. Fixed all noise problems. Don't know which one fixed it but do both anyway...
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by johnthiessen on Mon Jan 04, 2016 9:43 pm
I tried switching off the multi-processing but still have all the noise. Actually, I have a bunch of noise even when not connected to the recording software. For fun, I plugged the usb power supply to my power supply/filter for my stereo and still got a bunch of noise with just the mic and headphones plugged in.

I plugged the mic with and without headphones into my guitar amp (also has phantom power). And wow, the mic sounded absolutely great. Zero background noise and clear, crisp, deep tones, really what I expected. What's wrong with my ITWO?
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