Re: [R-390] Re: Tube shields? We don’t need no steenkin' tube shields!

[2002tii]

Les wrote:

>If I had a complete set of the IERC types with the finger grip type 
>insert for the SP-600, I would use them. But, I haven't used tube 
>shields for several years and have no tube failure problems.

The small-signal tubes in the 390, 390A, and SP-600 are run so 
conservatively that you could put silicone boots on them like some 
audiofools do (which raises internal tube temperatures very 
substantially) and the tubes would still last for decades.

Best regards,

Don