12au7 ecc82 B749 B329 5814 cv4003 13d5 e82cc 6189 ecc802s 13d4 6211 13d3 6067 5963 cv4068 6158. this ensures a thorough break-in, opens up sonically, all w/ no muted qualities leftover. full mutual conductance gm micromhos test + leak/short/gas/sound/life checks: 105/105 % gm or higher!
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