Hoping someone might know the DAC used in the Sony CDP-350 cd player. Manufactured in 1987. I know in the 80's that Sony used both Philips and BB chips. I'm looking for a player with a current output dac for trying passive i/v.
Sony's CDP-333ESD use the TDA1541 (current output dac) - go to
Sony CDP338ESD
Regarded the CDP-350 I guess, there are a PCM56P inside, but I am not sure.
This URL shows additional CDP's with TDA1541:
http://www.lampizator.eu/lampizator/TDA1541 corner/TDA1541.html
Sony CDP338ESD
Regarded the CDP-350 I guess, there are a PCM56P inside, but I am not sure.
This URL shows additional CDP's with TDA1541:
http://www.lampizator.eu/lampizator/TDA1541 corner/TDA1541.html
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Interesting that you guessed about the PCM56 dacs. I was thinking this also. Thing is , I have owned several(many) Sony 80's players , but never saw them use the pcm56 chip. I am hoping it's the 1541 , but any current output dac is fine. Just don't want to spend the money on a Sony dac with voltage put.
You prefer a SONY with TDA1541 instead a Philips with this DAC. Why?
The realibility and life time of laser units from Philips (e. g. CDM1-4) is much more better than from SONY.
The realibility and life time of laser units from Philips (e. g. CDM1-4) is much more better than from SONY.
I own many Philips players with CDM-2/CDM-4 lasers , and you are correct that they are more reliable than MOST Sony lasers. I find the KSS-151 to be an excellent laser( I'm certain this CDP-350 does not have this). What I do like BETTER than the Philips is the digital filter. Several Sony players I own with TDA1541 dacs/KSS-151 lasers , just sound smoother to me. Even after similiar 'mods'(opamps,caps, decoupling,added regs) , the Sony player is just more pleasing. Even the Nakamichi CDP-2(mostly Sony, with their own 'mods') sounds much nicer.
But the point of my looking at the Sony CDP-350 is for passive(resistor) i/v with tube srpp output , and I just want a CHEAP player to 'fix'😉
It's been a VERY long time since I've seen a CDP-350, but I am fairly sure it uses a single Sanyo LC7880 or LC7881 16bit dual dac chip w/4xOS filter. That was the first series of really cheaply made Sony players, and I think the first series to use the KSS-150, later replaced directly by the KSS-210. Not a terrible player at all, and not nearly the most cheaply made Sony player, but not exactly a desirable piece.
Thank-you to all that responded.
Stephensank 'remembered' well ,and Nazar_lv is correct(just got the unit).
To bad it's not a current output dac , but you can't have everything for $10🙂
;2075021 said:
Nazar_lv
If you had not made this statement ,I would have just put this player on the 'pile'. But you made me curious. I removed the op amps and disconnected surrounding traces. I made a direct connection to pins 1&20(rt/lft) via a poly cap I had available. I cannot believe how nice this LC7880(1) dac sounds. I made no other changes. I am amazed. Keep in mind that the output directly from the chip(voltage out) seems to be about 10db lower than with the LPF intact. It sounds full and sweet , with excellent treble. I have listened to this player(modded) for hours now , and I remain very impressed. I am really surprised this dac chip has not been mentioned around here. I can highly recommend giving this a try , especially since these chips are used in many cheap players.
You are right - I was also amazed about the quality of this SANYO DAC, which is also inside in NAD 5320 and 5325 (optical pickup here: Olympus TAOHS series)
LC7881 Datasheet pdf - CMOS LSI - SANYO
LC7880 Datasheet pdf - 16 bit D/A CONVERTER - SANYO
From the cheap compact disc players for me that one with best sound, realibility and life time.
Attachments
homemade, nothing surprising, around here people know only one-two advertising DAC simply becouse of theirs low electronic knowledge.
7881 is Kelvin divider(String) type dac with PWM(10-12bit), it is monotonic dac with very low and code-independent glitch(as with use of S/H) and very low DNL but very high INL, and has true voltage output (no need for I/U stage) but has big output impedance and need buffer with input impedance >100k (and filter before buf). LC78815, LC78816, LC78817 has internal badly opamp based buf and the same sound.
Second you need good clock (384fs) for you player, you can use simple, low EMI and low jitter clock from my dac Overture v2.3 based on AD8611
http://diyaudio.org.ua/blog.php?page=download&mode=download&id=27
7881 is Kelvin divider(String) type dac with PWM(10-12bit), it is monotonic dac with very low and code-independent glitch(as with use of S/H) and very low DNL but very high INL, and has true voltage output (no need for I/U stage) but has big output impedance and need buffer with input impedance >100k (and filter before buf). LC78815, LC78816, LC78817 has internal badly opamp based buf and the same sound.
Second you need good clock (384fs) for you player, you can use simple, low EMI and low jitter clock from my dac Overture v2.3 based on AD8611
http://diyaudio.org.ua/blog.php?page=download&mode=download&id=27
Make this another vote for the LC7881 DAC. 🙂
I too have a Teac CD player that uses this dac and after some modifications to the output stage can confirm that it makes for an enjoyable listen, particularly enjoyable highs and very good clarity.
I too have a Teac CD player that uses this dac and after some modifications to the output stage can confirm that it makes for an enjoyable listen, particularly enjoyable highs and very good clarity.
Interesting approach. Unfortunately the losses by translation of the URLs
DAC Overture v2.3
http://diyaudio.org.ua/blog.php?page=download&mode=download&id=27
(http_diyaudio.org.ua/blog.php?page=download&mode=download&id=27)
are too great:
http://translate.google.de/translate?hl=de&sl=uk&tl=en&u=http://diyaudio.org.ua/blog.php?u=2&b=13%22
Are this informations also in other languages than only in your Ukrainian language?
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A quick update
I just installed one of the SRPP tube boards I bought on epay(board needs work to perform properly). Directly from output pins 1&20. Used a .47 cap on input to board. No filtering , unless you include the bandwidth of the tube circuit. I used the headphone pot to control output , as it will clip the input of my test rig when run straight through. Cost me about $50 for tube board and heater trans. Well , I'm truly impressed. Can't be certain if the Sanyo dac or the tube circuit is the reason , but the combo is outstanding. No other upgrades yet. Maybe a reg on the dac ps . It never ceases to amaze me how much potential there is in 'old' digital tech. Have we really made that much progress in the last 20yrs , other than in size and cost of ic's? A very interesting discovery , this LC7881
This is the Russian language🙂. Have some question about this DAC? I have this one. The sound is very interesting, combinations of CXD1244 & TDA1541 with competent MCLK source provide excellent result!
Currently no, if you have questions open new topic, I answer.
And this article was moved to DAC Overture v2.3 .
The new version of this DAC DAC Overture v3.0 (Delicacy & Drive) - English -
which dac is my system using or i using ?
I owe a Aiwa mini stereo system ,but when using my Sony boom box as the cdp out from phone jack ,into aux in the Aiwa mini system ,sound is much more better both dynamic and fidelity better transparency ,which dac am using at such set up ?
dac might be mono or stereo ?🙂
I owe a Aiwa mini stereo system ,but when using my Sony boom box as the cdp out from phone jack ,into aux in the Aiwa mini system ,sound is much more better both dynamic and fidelity better transparency ,which dac am using at such set up ?
dac might be mono or stereo ?🙂
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