I have had my Syrah for almost two years now and have had no problems with it except for an intial problem with the fuse in the power supply. Mick told me to get a larger fuse and that solved the problem You also need to get a moving coil cartridge. My moving magnet sounded unlistenable with it. Mick recommended the Denon DL 103 for $200.00 and it sounds unbelievably good.
Remember, the phono preamp has a 2.5 mV input ceiling. Mick told me that for higher output cart(>2.5mV) such as an MM, you can try it and see for yourself what happens but he does not recommend it. It is possible that your MM cart was saturating the input signal resulting to "un-listenable" sound as you put it. YMMV