Check the listing for details. Phase Linear DRS 900,400,250 Amplifier Ad, 1981, Bob Carver Design. Condition: Used. Listed at 9.99 USD. This is beautiful reprinted Collector's Advertisement from 1981! - Great for collectors and audiophiles! These are vintage RARE ADVERTISEMENTS for Some of the best Audio and Video Equipment ever made. Check out my Ebay Store for THOUSANDS more relating to electronics. -it is approx 9" by 11", 1 page as shown - I ship Worldwide! Shipping is $3 in USA,$6 elsewhere. -These ads look great framed or put in a binder, they can also add value when selling your equipment as many of them have specs and details about the audio equipment! -Please email for any questions. Check out my Ebay Store, ELECTRONICS ARCHIVES, for many more vintage ads! -Shipping discounts are given for additional items, It is $3 for your first item in USA,$6 international, then just $1 for each additional Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.