This is a reprint of anAudioManualfrom1979!This is for the very rare 6000 Audio Delay unit from Phase Linear. It is a perfect re print of the oriignal manual. It has specs,20 pgs of how to use it and troubleshooting charts. It also has a technical description and a blue print of the inside of the unit.Very rare and hard to find!A piece of Audio History! I haveTHOUSANDS more Ads and Reviews on my eCRATER Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almostevery popular Audio brand! -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 eCRATER . List your items fast and easy and manage your active items.