RAAL-requisite HSA-1b - Switch Drive Amplifier Review

I used the adapter with several HP’s with no problem but I imagine a HP that is very efficient might have an issue

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The LCD-X are 103db sensitivity. When I owned the HSA1b I could hear the noise floor with all my ZMF and Focal headphones. The VC for example are 99db and I could already hear it and preferred to use only the standard output. In my case, the HE6 and HEDD sounded better and quiet from the ribbon output, all else I had on hand during that time showed noise floor and I would predict the LCD-X would be quiet only out of the standard outputs.

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Yes exactly this, I actually called up Danny from RAAL and he explained it all to me. Honestly had a great conversation; really gave me a crash course on this, and all things audio. Thought it was really cool he took time out of his day to do that.

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Correct. the ribbon out isnt dumb noisy, but it certainly shows up on more sensitive cans

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Danny is an unbelievably generous guy with his knowledge

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danny is truly a gentleman,the time he has taken working with me is incredible

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