upgrade is back

[Jean-Marie]

OK - I will now repeat now my subjective experience of listening to a D170 versus a D240 Expert with the KEF Blade - The D250 was substantially better.  In fact, the difference was so stark that I believe that for some reason the D170 was not driving the Blades properly, the main issue being a complete collapse with the bass definition.  Do you believe me?  I am just a bloke on a forum, I could be making it up.  Maybe I just thought the D250 was better because it was more expensive?  So you could read this and shout "rubbish", they sound the same, you week fool, you have been struck by the 3P's.  Maybe.  Of course, I have the advantage that I was there, so I am clear in my own mind what I experienced, but for your lot, how do you know?  I could say in my defense that I wanted to try the D170 because it was cheaper, and I thought that the drop in 70watts would make no difference, my expectation bias was that they would sound the same.  But you could come back and say that the 3P's had struck me subconsciously.  The truth is, nobody can prove this, and I mean 100% prove this either way.

If SAM was on, then the difference between the two amps was much more than 70W. 

With its 4 boomers, the blade is certainly deeping quite low and therefore peak power is what matters. 
Ask yourself why a 250 can be bridged into 1000W with peak on 2W over 4000W while a 220 will only bridge to 440 and peak on 2W of 1600W. 

So although the constant power between the two products is within 0.5 dB, their peak power is 4dB apart. 

That’s probably what you have heard. 

Jean-Marie