Hi;
I think there would be a drastic improvement.  One persons significant 
improvement is another persons minor improvement.  The only unfortunate 
thing about the 570 is that you can only have a cw or ssb filter.  The 440 
or 450 had options for both which was nice.
I personally found the audio dsp somewhat overrated.  Whether the dsp in the 
ts2000 is better I don't know.
Rich

----- Original Message ----- 
From: "Christopher Moore" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 08, 2006 3:49 PM
Subject: cw filters for kenwood ts570


Hello,
Does anyone have experience with kenwood cw filters?  My question is
whether I would improve cw reception by installing a filter in the ts570

tia
73 Chris w1gm