SOLD: FS: Siemens e83cc (12ax7) triple mica tubes x 4

[d_caruso]

Item: Vintage Siemens e83cc (12ax7, ecc83) triple mica tubes x 4
Location: Perth WA
Price: $390 for all four tubes. Free post within Aus (only for purchase of all four).
Item Condition: test NOS, low noise
Reason for selling: too many tubes
Payment Method: EFT, PayPal
Extra Info: These are the much sought after ‘triple mica’ Siemens 12ax7 Tubes made in the Siemens & Halske Munich plant in September 1963 according to the acid etched codes on the glass. The e83cc was designed to be a very quiet, long lived and and anti-microphonic tube. These four are indeed extremely quite, transparent and crystal clear in my phono stage and preamp. They tested NOS when I bought them about 6 months ago. I’ve put a couple of hours on them at most. 
The test results provided by the seller I bought them off are as follows (and marked on the boxes - see photos).

Tested on an Amplitrex AT1000

Sr.No.261106 T1=Ia=2.0ma Gm=1500

                        T2=Ia=2.0ma Gm=1500

Sr.No.206028 T1=Ia=2.0ma Gm=1500

                       T2=Ia=2.1ma Gm=1500

Sr.No.768632 T1=Ia=2.2ma Gm=1500

                        T2=Ia=2.3ma Gm=1500

Sr.No.769203 T1=Ia=2.1ma Gm=1500

                       T2=Ia=2.2ma Gm=1500

 

 

 
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