I love my C2600. It has more inputs than I can ever use and sounds great with everything. Besides, it’s beautiful just sitting on the shelf. I’m a sucker for those green lit tubes too!
What I find really cool is the 2600’s built-in DAC with modern circuitry. So I was able to buy an old Macintosh MVP-851 CD player (design matching the 2600, btw) outputting through the player’s coax digital out into one of the C2600’s digital inputs. This avoids the player’s dated DAC and essentially uses it as a transport. Anyhow, the audio quality is superb.