tosh:If i upgraded my Nad 315 amp to a 326 amp would there be a noticeable difference powering my Kef IQ5se or would it be marginal? Thanks
On paper and at face value with pure watts, I would say marginal. However, you have to take into account many factors into this. These include damping factor, current, quality of parts/chassis etc. bot just the power rating etc.
Can you demo? That would be the most important issue to me - does it sound better........