S.M.S.L portable headphone amp- sAp-7- sAp-4s
July 6, 2014 Comments Off on S.M.S.L portable headphone amp- sAp-7- sAp-4s
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“Output impedance are measured and calculated to be under 1ohm for both amps. Neither has a lot of current output, where sAp-7 is still quite decent while sAp-4s might not do that well with very demanding load. Otherwise they should good enough for your average headphone out there.”
Audiophilepure 
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