SIEMENS E82CC  - MATCHED QUAD 

Made in Germany Siemens E82CC / 12AU7 Grey Plates Top Ring Getter New in White Box Amplitrex AT1000 Tested

Up for sale is a matched quad (4 Pcs) of vintage NOS premium Siemens E82CC dual triode vacuum tubes, packaged in white boxes. Manufactured in Germany, these industrial-grade long-life versions of the 12AU7 / ECC82 feature classic grey plates and top ring getters. Renowned in high-end audio for superior German engineering, low noise floor, precise micro-detail, and neutral, crystal-clear extension across the frequency spectrum. As shown, all 4 tubes have been thoroughly tested on an advanced Amplitrex AT1000 tube testing system in full fixed-bias mode. Plate current (Ip) and mutual conductance (Gm) measurements alongside percentage performance ratings relative to nominal factory specs are detailed in the table below.

Serial No.	Triode Section	Plate Current (Ip)			Transconductance (Gm)
		Ref Spec	Result	% Ip	Ref Spec	Result	% Gm
SR.NO. 2795076	Triode 1 (T1)	10.5 mA	9.8 mA	93%	2200 µMhos	2000 µMhos	91%
	Triode 2 (T2)	10.5 mA	10.0 mA	95%	2200 µMhos	2000 µMhos	91%
SR.NO. 2795047	Triode 1 (T1)	10.5 mA	9.6 mA	91%	2200 µMhos	2000 µMhos	91%
	Triode 2 (T2)	10.5 mA	10.0 mA	95%	2200 µMhos	2100 µMhos	95%
SR.NO. 2795038	Triode 1 (T1)	10.5 mA	9.8 mA	93%	2200 µMhos	2000 µMhos	91%
	Triode 2 (T2)	10.5 mA	10.0 mA	95%	2200 µMhos	2000 µMhos	91%
SR.NO. 2795012	Triode 1 (T1)	10.5 mA	10.4 mA	99%	2200 µMhos	2150 µMhos	98%
	Triode 2 (T2)	10.5 mA	10.0 mA	95%	2200 µMhos	2000 µMhos	91%