<HTML>In a message dated 11/5/01 7:57:51 AM Central Standard Time, HazenBannister@cs.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Here is my opinion on the 100+ cent pitch raise.  You're only fooling yourself if you think you can do it with any fewer than 4 passes and even after all that, it won't quite be what you'd call "stunning". With the Sanderson Accu tweaker(as Jim Harvey calls it),and a good ear,I can pitch raise a piano 100 cents low,in two passes and get it dead on A440.Nothing special about me, just a great machine and proven techniques.Happy pitch-raising. </BLOCKQUOTE> I use the SAT too, have for 10 years and had good aural pitch raise techniques before that.  Even with calculated overpull, sometimes 20-30 cents or more in the treble, the high end remains hopelessly flat. Let's say the pitch is -120 cents.  The usual amount to overpull would be +60 cents.  I simply cannot imagine doing a 2 pass tuning, not breaking any strings and have the piano end up "dead on" as is the claim here. On the other hand, I can do 4 passes, each with a mild amount of overpull and each in about 20 minutes, getting the piano tuned in about an 1 1/2 hours and having reasonably stable results. Many of my concert tunings where the piano is tuned several times a year but is seasonally off pitch require 3 passes for rock solid stability.  The "machine" only goes so far in its ability to compensate.  The rest must be done by repeated correction. I only consider the piano to be in tune in such situations if you can pound hard on each and every note and not have it budge even one cent. A 100 cent pitch raise "dead on" in 2 passes?  If you say so. Bill Bremmer RPT Madison, Wisconsin</HTML>