Hello Jaymark, I'd suggest the CARY 120s. It's simple to bias, holds the bias, sounds great and CARY provides excellent customer service. It drove my 802D speakers with with excellentt results and they have simlar sensitivity/efficency as the Von Schewikert VR 4 JR speakers. Disclaimer: I have one listed (of a few listed) but it does very much fit your criteria for consideration.
Bill
Bill