I've been logging quite a bit of time with the Beatles lately and have once again discovered what a wonderful tone Paul got on their later stuff. Songs like: Don't Bring Me Down Something Penny Lane You know the tone. Is it possible to get anywhere near that tone with a 4003, or does it have to be a 4001? Do the newer 4003's have the mutes? He obviously used flatwounds, were they Rotosound tapewounds?