In my experience, in terms of purchasing "tweaks", I found that a non-felt mat topped by a SOTA Acrylic Supermat gave an order of magnitude improvement over the felt: certainly in terms of detail and noise floor. I've not heard the Systemdek arm but my RB300(Elys2 cartridge) with a Cardas re-wire and a Pete Riggle Brass counterweight made the Profile arm/Grado Green my IIX came with, a pile of...
But the greatest improvement was investing in a HEED power supply. This made the IIX it SO close to an LP12 Valhalla/Ittok/Koetsu Black it's staggering (I know because I have recordings from my old LP12 to compare with on metal tape); just a slight loss of inner detail and Bass "slam".
Interestingly enough the BASIS turntable dealer whom I purchased the HEED from, considered the Systemdek IIX would be a $2000+ turntable(w/o arm!) today! Talk about inflation! Selling the Profile made the cost of my 'dek $250! The Analog OPPO!
But the greatest improvement was investing in a HEED power supply. This made the IIX it SO close to an LP12 Valhalla/Ittok/Koetsu Black it's staggering (I know because I have recordings from my old LP12 to compare with on metal tape); just a slight loss of inner detail and Bass "slam".
Interestingly enough the BASIS turntable dealer whom I purchased the HEED from, considered the Systemdek IIX would be a $2000+ turntable(w/o arm!) today! Talk about inflation! Selling the Profile made the cost of my 'dek $250! The Analog OPPO!