My main preamp is a Yamaha CX-10000 that I adore, but other than that i have:
Amps
B&O Beolab 5000
Naim Supernait
Yamaha A-1
Yamaha A-960II
Power Amps
Yamaha AST-A10
Yamaha M-70
Yamaha MX-800 (currently on a well know auction website...)
Yamaha PC-5002M
Yamaha B2 - a very special version with no VFETs
Receivers (well, they have amplifiers in 'em!)
B&O Beomaster 5000
B&O Beomaster 8000
Yamaha CR-500
Of the integrateds, the Supernait never fails to impress me, but the Yamaha A-960II is a bit of a giant killer. Out of the power amps, the PC-5002M is an everything killer! As to the receivers, lets just say the Beomaster 8000 is one of the last components I would ever let go.