Description: TESTED AMPEREX FOR HEWLETT PACKARD 12AX7 / ECC83 TUBE GREY PLATE HALO GETTER ***FREE SHIPPING*** 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 = 88.1 Gain(Mu) Section B = 90.9 Tester Gain (Mu) Range = 0 - 120 Tester 12AX7 Expected Gain (Mu) value = 92 Transconductance (Gm) Section A = 1553 Transconductance (Gm) Section B = 1513 Tester Gm Range 0 - 990012AX7 tubes have a center design target of 1600Gm Noise (dB) Section A = -84.0dB Noise (dB) Section B = -83.7dBTester Noise (dB) Range -92dB - 0dB TEST RESULTS ARE SHOWN IN PHOTOGRAPHS. While performing an audio tap test on the Maxi Preamp through a guitar amp Triode A tested good when tapped, Triode B tested excellent when tapped. I OFFER A 100% REFUND UPON RETURN OF THE ITEM SHOULD IT NOT MEET YOUR EXPECTATIONS OR NEEDS. LOT 1961
Price: 49.95 USD
Location: Spanaway, Washington
End Time: 2025-01-03T18:37:28.000Z
Shipping Cost: N/A USD
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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: Amperex
Model: 12AX7 / ECC83
