dalejason wrote:I just got an Uno synth on Friday and like others here I hear terrible (frankly unusable) noise, especially, when using a compressor in Ableton.
This was quickly and simply resolved by fitting a Ground Loop Noise Isolator Filter between the output of the Uno and the Mixer. I also use Roland boutique synth's and noise is a well known issue on those too, when daisy chaining the audio through the boutiques and powering them by USB.
For £6.99 it's a relatively cheap an quick fix if you have Amazon Prime
https://www.amazon.co.uk/Seatecks-Ground-Isolator-Filter-Speaker-Black/dp/B07KDQT9Z4/ref=sr_1_9?ie=UTF8&qid=1552222843&sr=8-9&keywords=ground+loop+isolator
I owe you a big drink mate..i ordered one from the link you posted I just got it ..pluged it in and bloody hell the noise has totally gone its usuable now