35 year old joy

well, that preamp, you can use one of the tape loops for the optional use of the Remote Line Controller, that is one way to prove it is sonically invisible. 

@elliottbnewcombjr

Still a good idea as there are good old tape loops available.  Will be taking a look.  Thank you.

have you seen this discussion about old gear?

https://forum.audiogon.com/discussions/your-oldest-gear

and this older one

https://forum.audiogon.com/discussions/is-there-any-one-piece-of-vintage-gear-you-most-wished-you-owned

Yes and Yes!

Many years ago I bought a new in box Classic 60. Even then it was discontinued but was lucky and found someone who had several factory sealed in a warehouse. Wish I still had it!