NAD 352:

Supplies 80wpc of continuous power with both channels driven at rated distortion into 4 or 8 ohms. Dynamic power is listed at 240 watts from the C 352, into 2 ohms. 27 amps of peek current.

NAD 2600:

Supplies 150wpc of continuous power with both channels driven at rated distortion into 4 or 8 ohms. Dynamic power is listed at 375 watts from the 2600, into 2 ohms. 53 amps of peek current. Best part about this amp is you can flip into bridged mode and get 375 watts with 1200 watts of dynamic power.

In a nutshell, don't be so quick to walk away from the 2600. It brings a lot to the table that the 352 doesn't. Bigger power transformer and a host of other things. You like it loud, get the 2600. It will drive you places the 352 won't go and keep better control while you get there.