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RCA 5693 Special Red NOS

RCA 5693 is the ruggedized, high-reliability version of the 6SJ7 and 6SJ7GT tubes.

The RCA "Special Red" series (5690, 5691, 5692, 5693) were designed for industrial applications where 10,000-hour life, rigid construction, and uniformity are paramount.

5693 Special Red is the best tube there is to replace 6SJ7 in any application. Whether you are looking to replace the 6SJ7 in a vintage 1950s Gibson amp or building your own, 5693 Special Red is the ultimate tube there is.

These tubes in NOS condition are very rare, but we have a limited number of NOS 5693 Special Red in stock.

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