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- Feb 3, 2017
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I did detect an intermittent hissing sound in your SGL on one of the channels, but that was clearly noise, and not a signal distortion. It was also below 16 kHz, as I can't hear that high anymore. FWIW, I heard a similar sound from one of the channels of my SGL Junior shortly after I purchased it, but HifiMan exchanged it quickly for a new unit, and it hasn't been an issue since. Estats (and their amps) seem more prone to niggling issues than other driver types. Understandable given the high voltages involved.Actually, this the one issue I did have previously that I mentioned in I think this thread or another. An intermittent very low level distortion, that has pretty much gone away. I believe @BassicScience detected it a few times as well when I loaned them to him. Every now and then it comes back shortly, but it's very rare, which is why it just slipped my mind.