Check the listing for details. Infinity Quantum Line Source Brochure, 2 pgs, Specs,QLS. Condition: Used. Listed at 9.99 USD. This is a reprint of an Audio Brochure from Infinity! It is a beautiful brochure with 2 pages from 1977, full specs and articles about one of the rarest speakers ever made! The AWESOME QLS Infinity landmark speaker that raised the standards on audiophiles all over the world! Would look great framed or in a binder. This is a very rare brochure, a beautiful addition to your collection! You won't be dissapointed! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5" by 11" -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.