Agree with bdp24, bad idea to install tube sockets on a circuit board and with Ralph, hardwired, less circuit boards are best EXCEPT in the case of David Berning designs in both cases. I owned a ZH270 for 13 years and never had to change a tube let alone anything else, amazing reliability in spite of circuit board mounted sockets.
Agree with Quicksilver and my pair of 64 year old McIntosh MC-60's which are built like a tank including the heavy gauge steel casing.
Agree with Quicksilver and my pair of 64 year old McIntosh MC-60's which are built like a tank including the heavy gauge steel casing.