[R-390] Looking for 6C4's

[Mike Peace]

Hi Perry,

I see several EBAY sellers in the USA with new old-stock  6C4 tubes ranging
from $6 to $12 each with reasonable shipping.

example: https://www.ebay.com/itm/156734272038

Mike
VK6ADA
https://vk6ada.com.au/

On Sat, Oct 18, 2025 at 2:20 PM Jacques Fortin <jacques.f at videotron.ca>
wrote:

> Hi Perry,
> Are the NOS 6C4s so rare now that you had to use a "sub" ??
> A 6AB4 is half of a 12AT7: way different from a 6C4, IMHO (half of a
> 12AU7).
>
> 73, Jacques, VE2JFE in Montreal
>
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