Here are three versions of famous British made 12AU7 ECC82 by Brimar. Brimar is not so famous brand like Mullard, but tubes are exceptional quality and sounding for hi end audio use.
It’s very smooth sounding tube, lot of details and perfect ballance and very long life!
From left to the right:
Long black plates square getter — Long ribbed gray plates side getter (almost identical plates like Mullard long ribbed plates and similar sound characheristics) — Short ribbed gray plates top ring getter
Here is clearly vissible rare square getter, ribbed black plates (long plates!!!)
Matched (platinum) pairs, almost identical sections within 2.5%, low noise pairs, burnt out for 24 hours
Click to see all ECC82 12AU7 TUBES in stock