I second the modded PS Audio GCPH with the caveat you "burn" it in for 72 hours to get a proper first impression. I used a Granite Audio Model #CD101.1 Phone Burn-In & RIAA Test CD from Musicdirect.com. Otherwise, I was ready to send the unit back as it sounded very "harsh" and metallic even after the suggested "burn in" of regular playing time. However, I decided to give the unit one more chance with the phono burn-in disc. Afterward, I found satisfaction with my purchase and finally heard what reviews raved about. At first I thought I get a tube phono preamp as I love the qualities tube provides but this unit fit well with my Grado .5v Reference Cartridge/Scoutmaster, ARC LS 16 preamp, ASL Hurricane monoblocks, and Cardas Golden Cross XLR and RCA ICs configuration. In reflection, a tube phono preamp might have overdone the coveted "warm/tube sound" with my particular set up, so adding a good complimentary solid state piece worked in my mix of gear. The sound staging, sonic details, and coherency from the top to bottom, is all nicely balanced. Since I have no interest in going further up the food chain in amps or preamps, my modded GCPH is just fine. If I was to move up it'd be to the $5 K ARC Phono Preamp, necessitating an amp upgrade but I have no interest in going there because of diminishing returns. I don't know about the Heed Quasar but my experience with the modded GCPH with proper burn-in is very satisfying as it meets my sonic and equipment needs. Good luck to you and always remember to enjoy the music.