Arturia Forums

Audio => AudioFuse => AudioFuse - Technical Issues => Topic started by: wstratton on January 11, 2021, 06:14:51 pm

Title: Audiofuse Studio - 48v phantom power noise
Post by: wstratton on January 11, 2021, 06:14:51 pm
Hey all, I just bought an Audiofuse Studio to replace an Apollo Twin, and I'm impressed with it, except for one big problem--activating phantom power on any of the four preamps causes a lot of static noise when microphones are connected. When only a cable is connected, there is significantly more noise, but the noise with the microphones connected is significant enough to make the recorded signal unusable. I've A/Bed with other preamps and I've tried other power sources, and I've tried disconnecting the device from the computer--same result in all cases. Before I send this back to the retailer, any ideas?
Title: Re: Audiofuse Studio - 48v phantom power noise
Post by: wstratton on January 13, 2021, 09:11:26 pm
Never mind, this may be an issue with humidity or faulty microphone capacitors that has nothing to do with the AudioFuse. I'll report back if further testing reveals otherwise!
Title: Re: Audiofuse Studio - 48v phantom power noise
Post by: julien.daltin@hotmail.fr on January 22, 2021, 08:46:38 pm
Hey, same issue here. It may has to do with the 48v supply : when I replace the Arturia's 48v with an external 48v supply, then the noise disappears ...

Did you manage to solve this problem ?

Any tech on this ?

Thx Julien
Title: Re: Audiofuse Studio - 48v phantom power noise
Post by: OldieButGoodie on February 05, 2021, 07:24:46 pm
Never mind, this may be an issue with humidity or faulty microphone capacitors that has nothing to do with the AudioFuse. I'll report back if further testing reveals otherwise!
This is definitely an issue with the AudioFuse Studio's phantom power.

I have done a direct comparison test between the AudioFuse Studio (799GBP) and an IK Multimedia Axe I/O (299GBP), both with +48v phantom power enabled. Both were new, both tested in identical circumstances, in a silent, soundproofed room, with the input gain at half and then full level.

The Axe I/O was quieter at full gain than the AudioFuse Studio was at half gain.

I concluded that the AudioFuse Studio is unusable for vocals on even moderately quiet songs. It's simply too noisy when phantom power is enabled.

Is this just a bad batch of phantom power supplies or is it an issue with every AudioFuse Studio? I have sent this to Arturia tech support and await their reply. I will report back once it is received.

(I originally attached screen grabs of the test results, but they came out huge, so I've removed them)