Looking for either replacements or equivalent

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Plenty of near equivalents in the BUZ range like the BUZ323/338.


You need to check out ALL the parameters as your amplifier is designed to those parameters and ALL I mean ALL .


Not many in the 2SJ range.


What looks good isn't so good when you check across
the other specs .


2SK1529 -near is the 2SK1531/1570/1796.