I started learning harp some time ago, now I wan't to try amplified playing. Normally people use valve or transistor amps, mostly designed for guitar players. Searching the internet let me stumble upon guitarix, which uses Jack. But I have problems with getting sound out of jack (ubuntu 16.04), I only get quirky noise from the mic, and I'm completly new to making music with linux. So before digging deeper in problems with jack, I thought it might be helpful asking you for alternatives - maybe you would recommend some other programs for playing amplified harp, maybe you would not recommend using guitarix for harp at all?
Any help is greatly appreciated!

Please help.

I didn't find the right solution from the Internet.

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