I have Marantz nr1608 , I need to improve stereo performance (front speaker) by adding external power amp. Please suggest good cheap 2 channel power amp
Best, good, cheap all don't gel well in the same sentence. You can get either or. A decent power amp, 2 channel will be more expensive than your NR1608. Except the crown. Which is cheap.
Dali Zensor 3 is a low sensitive Speaker. Marantz NR1608 itself would drive it well. Did you check the input source level. Also I would suggest good towers instead of a poweramp for Zensor 3.