Description: MAXI & TV-7 TESTED TELEFUNKEN ECC83 / 12AX7 SMOOTH PLATE ***READ*** ***This "Telefunken" is a bit suspect to me. It tests well but no diamond on bottom and the getter does not look like the typical Telefunken getter. It may very well just be a variant I am not used to seeing but I am not sure of it's authenticity. Know this before purchasing!*** TESTED ON A MAXI PREAMP II TUBE TESTER FOR GAIN(Mu), TRANSCONDUCTANCE(Gm) AND NOISE(dB). THE MAXI PREAMP II TESTS TUBES AT 200 VDC PLATE CURRENT 4 TIMES PER SECOND. Gain(Mu) Section A = 102.9 Gain(Mu) Section B = 96.6 Tester Gain (Mu) Range = 0 - 120 Tester 12AX7 Expected Gain (Mu) value = 92 Transconductance (Gm) Section A = 1933 Transconductance (Gm) Section B = 2079 Tester Gm Range 0 - 9900 Noise (dB) Section A = -66.5dB Noise (dB) Section B = -65.1dBTester Noise (dB) Range -92dB - 0dB While performing an audio tap test on the Maxi Preamp played through a guitar amplifier triode A tested excellent & triode B tested somewhat microphonic when tapped. TV-7 Test Results: Minimum good value on the TV-7 is 32.Triode A Tested: 60 Triode B Tested: 60 TEST RESULTS ARE SHOWN IN PHOTOGRAPHS. I OFFER A 100% REFUND UPON RETURN OF THE ITEM SHOULD IT NOT MEET YOUR EXPECTATIONS OR NEEDS. LOT 1231
Price: 59.95 USD
Location: Spanaway, Washington
End Time: 2023-11-08T19:05:23.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: TELEFUNKEN
MPN: ECC83 / 12AX7
