Raytheon CK-5694, ECC32 / CV-181 6SN7 GTBusedRaytheon CK-5694,  ECC32 / CV-181 6SN7 GTB also 6DJ8 / ECC88The Raytheon CK-5694. Electronically similar to a British made ECC32 / CV-181, but better, in every way. I am using them as 6SN7 GTB substitutes, driving 845s. They were ignored because they have a...400.00

Raytheon CK-5694, ECC32 / CV-181 6SN7 GTB also 6DJ8 / ECC88

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9/10
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Ships fromColorado Springs, CO, 80905
Ships toUnited States and Canada
Package dimensions7.0" × 7.0" × 6.0" (1.5 lbs.)
Shipping carrierUSPS
Shipping cost$10.00
AverageResearch Pricing

The Raytheon CK-5694. Electronically similar to a British made ECC32 / CV-181, but better, in every way. I am using them as 6SN7 GTB substitutes, driving 845s. 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.  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. 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 are very transparent and clear. The Raytheon CK-5694, easily the best NOS tube that I have ever owned.  I have a customer using them as 6DJ8 / ECC88 substitutes, in a DAC, with a vacuum tube based output stage, with excellent results!  One matched & balanced pair available at $400.

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