Electronic experience :
Here you will find our electronic experiments. Many factors can influence a measurement and each result can be questioned. Do not hesitate to send us a message if you see an error!
Of course, if you need color sound with harmonic distortion in low frequency, the transfomers will be the best !
Consequently we can’t say OPA technologie is better than a transfomer. It depends the sound you are looking for. Also, we can say all in box integrated circuit are cost effective but the quality is lower.
We find the same results about CMMR (common mode rejection at the input).
Regarding GC Audio Products :
Input unbalancing stage :
Here you will find our electronic experiments. Many factors can influence a measurement and each result can be questioned. Do not hesitate to send us a message if you see an error!
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- Wich technologies to have the best balanced signal ?
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- Transformer design = 71mV.
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- All in box integrated circuit = 15.86mV.
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- Twin OPA design with 1% resistor without trim = 3,2mV.
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- Twin OPA design with 1% resistor and trim pot = 0.09mV.
ONLY IF YOU’RE LOOKING FOR TRANSPARENT SOUND | ||||
Common-mode suppression | Harmonic Distortion | Noise | Cost | |
OPA design with trim | 1 | 1 | 2 | 3 |
OPA design without trim | 2 | 2 | 3 | 2 |
Transformer | 4 | 4 | 1 | 4 |
All in box IC | 3 | 3 | 4 | 1 |
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- Transformer design : RE-4K, RE-73, Gyraf, Tube Heat
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- All in box integrated circuit = RE-11
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- Twin OPA design with 1% resistor without trim = None
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- Twin OPA / discrete components design with 1% resistor and trim pot = Langley, RE-98
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- Transformer design : RE-98, Gyraf, Tube Heat
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- All in box integrated circuit : RE-11
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- Twin OPA design with 1% resistor without trim : RE-15, RE-VR
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- Twin OPA design with 1% resistor and trim pot : Langley, 4-K