I've run my Wadia 830 with and without the Krell KRC-3 preamp into Balanced Audio Technology VK500 driving Dynaudio Confidence 3's. I get more detail and clarity of the music without the preamp and it will play loud eneough for medium sized rooms. In mt system sound quality, resolution and musicality is improved when by-passing the preamp.
ML Aerius I, Moon W-3, Wadia 830
I'm putting together a complete new system for exclusive CD playback. The speakers will definitely be the Martin Logan Aerius I and the amp will be the Sim Audio W-3 high current, low impedance amp. Any reason to add a pre-amp if I go with the Wadia 830? I was thinking about the Classe CP50 or new 47.5 but I'm not sure it will add, maybe subtract from the equation.