Here is a Pacific Recorders 918 op amp designed by Deane Jensen. PR&E made the finest broadcast consoles money could buy in the golden age of analog. This is a discrete Jensen 918 op amp which are not potted so they can be repaired should they ever need it. The 918 is the predecessor to the 990 op amp. Condition is "Used" and sold as is with no returns accepted. I have sold several of these and all have worked great. Shipped with USPS Priority Mail.