Hey nice..sorry I missed this all these years. What a great well thought out system. It must be a joy to listen to and Quad ESl's from Wayne..well..Its been siad that after Wayne gets done with a pair of 57's..its something very special!Im running my fully refurbe'd 63 USA's( by Kent Mccollum of Electrstatic Solutions ), very nicely with an 18W- 845 SET amp.. and although a bit tougher to drive than your 57's..my 63USA's do very well with that amp... .I have wondered what RM-10s or 9's, would sound like, since it seems to be the amps many Quad owners like,as well as the Leak.Great job!
Congrats and enjoy!..Ken