I have the C700, 8 tube preamp with 5AR4 rectifier and love it controlling either a Canary CA306 300b tube power amp or the Canary M50 KT88 power amp. Bought both the amps new from dealers at a substantial savings off retail. Bought the pre used and had issues with the volume and selector pods, contacted the dealer who put me in touch with a Canary tech and they sent me two new switches at a very reasonable price, they were very easy to change out. Enjoy the music
