The 300B- w/ 8 watts per channel drives the Piega's wonderfully. The Planet is a perfect match, I owned much more expensive units that did not blend well. The P-5 is a revelation- a giant killer at the price-especially with the Lyra Argo. The Piega's positively sing. I listen more to this than my home system- mostly because I'm there all the time.
Doesn't the desk get in the way! Great setup. How much vinyl do you keep at the office? ALso, you forgot to mention your little ipod lost among the cables on the floor.