TESTED GAIN (87.8, 89.3) SIEMENS 12AX7 / ECC83 TUBE HIGH GM (1856, 1797)
테스트된 게인(87.8, 89.3) 지멘스 12AX7 / ECC83 튜브 하이 GM(1856, 1797)
| 상품번호 | 187963732760 |
| 상태 | Used |
| 거래유형 | 즉시구매 |
| 출고국 | 영국 (GB) |
이베이 판매가
$86.2
약 127,059원
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상품 설명
TESTED GAIN (87.8, 89.3) SIEMENS 12AX7 / ECC83 TUBE HIGH GM (1856, 1797)
***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 = 87.8
Gain(Mu) Section B = 89.3
Tester Gain (Mu) Range = 0 - 120
Tester 12AX7 Expected Gain (Mu) value = 92
Transconductance (Gm) Section A = 1856
Transconductance (Gm) Section B = 1797
Tester Gm Range 0 - 9900
12AX7 tubes have a center design target of 1600Gm
Noise (dB) Section A = -87.1dB
Noise (dB) Section B = -85.6dB
Tester 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 had some mechanical noise when tapped, Triode B had some mechanical noise when tapped.
I OFFER A 100% REFUND UPON RETURN OF THE ITEM SHOULD IT NOT MEET YOUR EXPECTATIONS OR NEEDS.
LOT 2261