Wanted to receive any feedback on these two phono preamps. Narrowed my choices down to these two and wondered if spending the additional $100 on the Gram Amp 2 would be worth it over the Parasound. Any thoughts on these two units would be appreciated. With be mating it to an old Yamaha PF-50 turntable powered by a Parasound AVC-1800 preamp and Parasound HCA-1205A 5-channel amp driving a pair of Eminent Technology LFT-IV speakers. Previous experiences with the Yamaha was with various receivers with a built-in phono stages, years ago.