I have the original Phono Blocks paired with a VPI Classic 3, Spectral 30sv preamp and Spectral 400 mono blocks. Speakers are EgglestonWorks Rosa. The Phono Blocks are excellent sounding. Before them I had the Southerland Hubble (I got tired of changing the batteries). Ron Southerland is very helpful. He answered my questions about set up and sent me some blank boards to make custom plug ins for gain and loading.