Nad is replacing the c325bee/c372/c272/c162 and the c720bee.
"Much of the NAD Classic Series has been overhauled with the all new top end models getting their technology directly from the Masters Series! The $799 C165 preamp uses very high-end parts with a transformer large enough to power most 100W/ch amplifiers and the gain-stage modules from the Masters M3. The $1200 C275 amp and $1300 C375 integrated now are based on the M3 amplifier section, but with a single transformer rather than the dual transformers in the M3. The C375 simply adds a basic preamplifier section for a mere $100, though a phono card is available for $200 more. The $799 C565 CD player also benefits from the Masters design with high-end Burr-Brown op-amps, Wolfson 192kHz DACs and upsampling technology.
Getting a few more subtle upgrades are the $499 C545 CD player and the $500 C326 integrated".
Taken from adnm.com
"Much of the NAD Classic Series has been overhauled with the all new top end models getting their technology directly from the Masters Series! The $799 C165 preamp uses very high-end parts with a transformer large enough to power most 100W/ch amplifiers and the gain-stage modules from the Masters M3. The $1200 C275 amp and $1300 C375 integrated now are based on the M3 amplifier section, but with a single transformer rather than the dual transformers in the M3. The C375 simply adds a basic preamplifier section for a mere $100, though a phono card is available for $200 more. The $799 C565 CD player also benefits from the Masters design with high-end Burr-Brown op-amps, Wolfson 192kHz DACs and upsampling technology.
Getting a few more subtle upgrades are the $499 C545 CD player and the $500 C326 integrated".
Taken from adnm.com