2 MATCHED MULLARD ECC83 12AX7 1950s

CLASSIC LONG-PLATES

COPPER-POSTS

BLACKBURN PRODUCTION

f92 DESIGN

IDENTICAL DESIGN & DATE CODES

AVO CT-160 TESTED: 103%-112%

Please see pictures for the results

Rare pair of Mullard long plates. Both AVO Test Good and well-balanced and well-matched on all AVO tests: conductance:103%-112%; current draw; insulation: hot & cold; shorts; continuity; & gas. Zero microphony;