I got to post here, to compliment Piotr on absolutely amazing customer service and to suggest everyone to buy his products.
I've just received my Pro330 back from repair after problems with failing dampers, when i first sent them down there, he asked if he could keep them a while longer instead of just fixing the dampers. As i wanted a more reliable product, i said yes. Since then he's retuned the Pro330 to avoid using dampers instead of just replacing/repairing the dampers and sending them back.
It's amazing to see a manufacture show such service and willingness to improve on their product. During the process i've written quite a lot of emails with Piotr and he's always replied incredibly fast (actually insanely fast, receiving responses saturday night at around 23 o'clock is customer service above and beyond anything i've ever experienced!), and always kept me up to date about the process of my order.
All i can say is i'm very happy with my Pro330v2 with Westone cable and i can't say how much i will recommend CustomArt as a manufacture of CIEMs.
Great work Piotr!