REGARDING USING YELLOW PAGES PHONE BOOKS AS HEAT DIFFUSORS, I WOULD LIKE TO RECOMMEND THAT YOU TRY 'NEW OLD STOCK' PHONE BOOKS . . . I.E., EXPIRED. WHILE YOU WILL HEAR A DIFFERENCE USING THE CURRENT EDITION, YOU'LL BE AMAZED WHEN YOU TRY OLDER / EXPIRED PHONE BOOKS THAT ARE MORE 'SEASONED/BROKEN-IN'.
ANOTHER TWEAK INVOLVES FOLDING THE UPPER RIGHT CORNER OF THE FIRST PAGE OF EACH ALPHABETICAL SECTION (DOG-EAR EACH PAGE) BECAUSE, AS EVERYONE KNOWS, A DOG'S HEARING EXTENDS WELL BEYOND 30K HERTZ AND THOSE LUCKY ENOUGH TO APPRECIATE THE PLACEBO EFFECT OF THIS WILL BE GLAD THEY DID IT.

YOU MAY ALSO WANT TO SEE WHAT KIND OF RESULTS YOU GET USING THE WHITE PAGES BUT THAT'S USUALLY RECOMMENDED ONLY FOR CLASSICAL MUSIC. BUT, WHAT THE HECK, WHY NOT EXPERIMENT!! WHAT YOU HEAR IS YOUR OWN BUSINESS!! RIGHT? JUST DON'T LISTEN TO ALL THOSE OTHER VOICES IN YOUR HEAD THAT KEEP TELLING YOU TO GO OUT AND DO BAD THINGS!

FORGOT TO MENTION THAT FOR MAXIMUM SYNERGY YOU SHOULD USE THE PHONE BOOK FROM THE SAME CITY/COUNTRY THE COMPONENT CAME FROM. MIXING/MATCHING COMPONENTS & PHONE BOOKS ORIGINATING IN DIFFERNT LOCALES MAY VOID THE WARRANTY AND/OR CAUSE AUDIBLE HUM IN SOME SET-UPS . . . . IN WHICH CASE YOU MAY HAVE TO FIND YOURSELF A PHONE BOOK WITH BETTER SHEILDING.

Thanks Jim!Your suggestion on de-BOSE-ifying the phone book is a sure-fire winner. I contacted R.R. Donnelly in Chicago (the published of most yellow page books in the U.S.) and asked them if I could do a special printing run of the Northern Virginia book with any mention of the word "BOSE" removed. They said "Sure" but needed a week to OCR all the special advertising pages to detect any "BOSE" mentions that might have been embedded in a graphic image, and then another week to prepare the printing masks for those offending ads. The actual text deletion is a snap by comparison. The thought of a 100% completely de-BOSEd phonebook sets me all a-tingle. I can't wait to hear the refined non-reflected, non-equalized imaging!

Thank you dave!!!! I just recieved the new de-bosed edition I placed one on top of each of my boulder monoblocks and man I'm in heaven. Thank you!!!!!!

To eliminate heavy AIRBORNE VIBRATION on the cd player, simply place a 9cm thick(5kg and above) yellow pages or telephone directory. Then flip to the centre pages of the book and lay both flaps on top of the cd player. The annoying bass is gone and left only the detail and crisp sound of my cd player. Of course, I place 3 AUDIO PRISM ISO BEARING 3.3 underneath the cd player to reduce the STRUCTURE VIBRATION. I simply place all my electronic components on the marble flooring of my audio room.
My setup: MINI HOUSTON TUBE(EL84)amp,MARANTZ CD17KIS, EPOS ES12 with 24" stand, VAN DER HUL CS122 SPEAKER CABLE, NORDOST SOLAR WIND INTERCONNECT.

I tried the 1999 Pacific Bell Yellow Pages, but the older vintage 1994 Ameritech Yellow Pages have better sonics- tighter bass, more transparent mids, and more extended highs. U.S. West's yellow pages has better highs, but the bass isn't as good.
Be sure that the front cover is facing up. If the back cover is facing up, that introduces a "nasal" coloration into the mids. Tearing out the map inside the front cover does improve the rhythm and pace somewhat.

Stay away from white pages. Makes Quad speakers sound like Bose.

I'm having trouble finding a vintage phone book with all the coupons intact. Does this matter ? Also I've heard from some that removing the government pages will make a huge difference. Please help. I don't want to mess up a vintage phone book and have it not help at all.

I read all the reviews over about eleven times, to cherry-pick the best features and applications of this device. After some deep thoughts and some personal tweeking I came up with this: Rather than worrying about the structural and airborne sources of vibration
to my components I decided to go to the source(read listening source here).Since
I do most of my listening on the thrown( my bathroom has the best acoustics)
I tried and settled on a local phone book.The San Francisco Bay area phone book
gives the sound a transcendent quality, with an almost lavender hue around the
instruments.I took Jim`s suggestion and spritzed some 50`s vintage Gewurtz on
my skankier dreadlocks, this before aligning the book on the top of my head.A
couple of Iso Bearings under the balls of my feet and Bam, I was off to the
races! Happy Listening!

Schlock Electronics (PTBarnum, New Jersey) makes a clearly superior phone book for the discriminating audiophile. The reinforced copper braiding in the binding seems to eliminate the harmonic distortion I was getting with a standard phone book between the aluminum siding and awning sections. $2,500 seems a reasonable price for such sonic clarity, especially when you throw in call-waiting...

To Adam from MI: ebay is presently offering a 1946 Berlin U.S. Forces phone book (item #134231202) until 7/26. Although it may impart some harshness and/or boominess due to its singular content, it should still enhance your BPO listening experience compared to domestic books (although Wagner's "Ring Cycle" wouldn't suffer, I bet!) You may want to mist the pages with a good quality Riesling or Gewurtztraminer first to smooth it out. I would recommend Babcock Vineyard's 1994 Santa Ynez Valley Gewurtztraminer if you can find it. It exhibits both surprising depth and unusual density for a 'traminer, but with a refreshing tanginess. It is also a touch bitter in the finish, but what could be more appropriate for Berlin after the war? Good listening!