E84L/7320 Premium Grade EL84 has higher ratings (450V Anode Voltage with 13.5W Anode Dissipation versus EL84 (300V/12W) or 7189 (400V/12W). These can be used for any EL84/6BQ5 or 7189 application with the exception of 7189A, which has a different pinout.
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