The C1100 is the latest offering from McIntosh and is a significant step up from the 2600. It's worth comparing the two on the McIntosh website to get a sense how they match up across capabilities and specs. I moved from the C500P to the C1100 and have been very pleased with the upgrade. The C1100 is remarkably quiet and musical. I don't hear any hint of hum or noise even at high volume with phono sources. You lose the 3D faceplate and the ability to switch between tube and SS compared to the C1000 but the specs are so good on the C1100, they didn't bother with a solid state offering. Neither the C1000 nor C1100 offer tone controls like the 2600 but I don't miss them and it simplifies the signal path. Separating AC from the line stage with dual mono pays significant dividends, it's the quietest line stage they've ever offered. The phono stage is also very good. Make an appointment to audition it at your local dealer.