for sure the readers would ask themself why..since it's not the very basic...and I would answer that the DSP is so funny thing but no audiophile at all!!!!the processor lay on the signal passage before the DAC.....better switch it off and work for a better hardware as LPF circuit!!!!
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I found there an LPF circuit and a buffer stage ...around buffer stage are spottered some transistor adjusting the gain....mmmmmm .... too long travel for a little audio signal !
the operational on the pic above is vanished now!!!!!!!!!!!
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| a new laser unit KSS240 was really very fickle ...and tired..........neded a swap for a new NKS240..but pls don't try to strike the player...don't try even to tip on it....it will skip the track soon!!! :-( |
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| here they are the new dip-8 socket |
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| aaah.....here they are the 4 1/8 resistors swapped for 4 1/4 metal film res. |
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| In the LPF i found 2 operationals ..one for each channel........at first i swap them for a couple of motorola33078 ....better say I chose them among a big bunch of them after an accurate listening! but at last I found them a little bit too harsh...the I said to myself "no they couldn't be in the tastes of Sergio!!" Thath's why I went straight for a couple of shiny Burr Brown!!..... wich model you would ask!!?!!......OPA2134 !!!!!! the one I brushed out for month ....yes now they're working great here and in the other Sony of mine (CDP-XE270) |
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Fujicon TM for decoupling of the two operationals.............panasonic HQ as decoupling around DAC
...and a couple of nichicon muse FG in the output followed by 2 stunning carbon composite resistors!!
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Now the sound is really amazing: open ...so detailed and dynamic...a pleasure for the ears!!!! ;-)))
another nice mod on a Sony Cdp :
