mcintosh c2300

i would love to hear from anyone who knows about the c2300, how it is working out with their system, and what they are using it with. i bought a second pre amp as a back up to switch in and out from time to time, and this is what i got. i will be using it with the mcintosh 501' though i might get the 2101 as well. so any info about this preamp would be great. thank you