niamex
100+ Head-Fier
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- Jun 3, 2010
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Quote:
Maybe this is incorrect.....
TOTAL HARMONIC DISTORTION
VO = ±FS at f = 991Hz:
PCM56P-K –94 –92 dB
PCM56P-J –94 –88 dB
PCM56P, PCM56U –94 –82 dB
PCM56P-L –94 –80 dB
VO = –20dB at f = 991Hz:
PCM56P-K –75 –74 dB
PCM56P-J –75 –68 dB
PCM56P, PCM56U –75 –68 dB
PCM56P-L –75 –60 dB
VO = –60dB at f = 991Hz:
PCM56P-K –35 –34 dB
PCM56P-J –35 –28 dB
PCM56P, PCM56U –35 –28 dB, there is no chance
PCM56P-L –35 –20 dB
No,that's correct and explains everything ! Forget about the high values on the left side - there is no chance the quality control to miss a chip showing for example 92 db and mark it as J grade - no - it is marked K and goes to the first qlty basket. Therefore if you have a J grade chip the best chance is to get 91 db and the worst 88 db - at the same time K grade is min 92 db and in the best case 94 db which is really very good. I mean you can hear better the blackness or the silence in case you have better S/N -/signalt to noise/ ratio.
Cheers