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Old 08-05-2024, 04:02 PM
John Marinello's Avatar
John Marinello John Marinello is offline
<-- "Byron"
 
Join Date: Dec 2005
Location: Lake Murray, SC
Posts: 1,123
My '51 Zenith was very specific on using a 6sn7gta, 500v, where the 6sn7 was only 450v max. Wrong tube may cause deflection & linearity issues. I think the gtb version had a faster warm-up, and was better suited for series-strung sets.

Be nice to know how the characteristics compare.
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