Raytheon 5694 Vacuum Tube Electronically Similar to a ECC32 /CV-181 But Better in Every Way!

The Raytheon CK-5694. Electronically similar to a British made ECC32 / CV-181. They were ignored because they have a non-standard octal pin-out, which means that they require a small adapter.
Professionally made adapters to convert them to a 6SN7 pin-out, are currently available on Ebay for $15.91 each. THESE ARE NOT DIRECT 6SN7 SUBSTITUTES, PLEASE CONSULT AN AUDIO TECHNICIAN BEFORE USING IN YOUR EQUIPMENT!
They feature lower noise, more dynamics, and are better across the entire frequency spectrum. Easily outperform the Mullard & Chelmer Valve ECC32 / CV-181, which go for $600 to $650 a pair at "Tube World", when available.
I am using them as 6SN7 GTB substitutes to drive a pair of 845s.
These tubes are be careful what you ask for, They will reproduce every thing that comes from your source, the good, the bad, and the ugly.
Analog, in every sense of the word. If you like digital effects, these are not for you.
I am listening to them through custom four-ways, using only first order cross-overs, they allow no room for error.
The Raytheon CK-5694, easily the best NOS tube that I have ever owned.
One matched & balanced pair available at $400