Going on measurements, if the CS600 is anything like the CS300, I would opt for the MC275, it has the far better looking measurements re FR flatness and square wave ringing responses.
The Leben rings like a bell with the square waves and is also shown by it's response which climbs like Everest after 10khz.
http://www.stereophile.com/content/leben-cs300-integrated-amplifier-measurements
http://www.stereophile.com/content/mcintosh-mc275-power-amplifier-measurements
Cheers George
The Leben rings like a bell with the square waves and is also shown by it's response which climbs like Everest after 10khz.
http://www.stereophile.com/content/leben-cs300-integrated-amplifier-measurements
http://www.stereophile.com/content/mcintosh-mc275-power-amplifier-measurements
Cheers George