I used a Denon DL103 on a P3/RB300 with great success. The Denon/P3 is a great combination, with a wonderfully direct and lively sound. That combination was legendary in Europe 15 years ago, long before the DL103 become popular in the US again. I am currently running a DL103R in an RB600/Tecnodec, which is not quite as musical as the P3/DL103 combo, but is tonally more neutral, with great high frequency extension and detail. A dropped counterweight, e.g. Expressimo Heavyweight will help.
Enjoy!
Rene
Enjoy!
Rene