These 5692 tubes are labeled GE but ALL 5692's are made by RCA regardless of the color of the base and the name on the tube. They have 5 HD Support Posts, Long Life Super Duty, Low Microphonics, and are SUPER QUIET. These are the REAL DEAL with the Heavy Red Base, Triple Mica and Black Plates.
Amplitrex AT1000 Test Results 95%+ GM = within NOS Specs 90%+ EM = within NOS Specs |
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(GM) Mutual Conductance 2600 = SPEC |
(EM) Emission 8.0 gV = SPEC |
Noise Test |
(mU) Gain |
TUBE #1 |
2600/2570 (100.0/98.8%) |
7.9/8.0 (98.8/100.0%) |
5/5 |
20.4 19.7 |
TUBE #2 |
2500/2550 (96.2/98.1%) |
8.1/7.9 (101.3/98.8%) |
5/5 |
19.5 19.7 |
TUBE #3 |
N/A |
N/A |
N/A |
N/A |
TUBE #4 |
N/A |
N/A |
N/A |
N/A |
- PERFECT = 0.0% (Less than 5% = Outstanding)
- Balance (Balance Goal = Mhos > 5% / Gv > 10%)
- Tube 1: A to B = Mhos - 1.2% Gv - 1.3%
- Tube 2: A to B = Mhos - 1.9% Gv - 2.5%
- Match (Tube 1 to Tube 2) (Match Goal = Mhos > 5% / Gv > 10%)
- Tube 1A to 2A = Mhos - 3.8% Gv - 2.5%
- Tube 1B to 2B = Mhos - 0.8% Gv - 1.3%
- Noise Test Scale: 5 = Ultra Low; 4 = Very Very Low; 3 Very Low
- Tube Gain Scale : 20 Mu (+ or -) 3 Mu = Within Factory Specs
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