Sony CDP-350. Anyone know the dac chip used?

[tiefbassuebertr]

Originally Posted by homemade

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.

[Nazar_lv]

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&id=27

[erin]

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.

[tiefbassuebertr]

Originally Posted by Nazar_lv

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&id=27

Interesting approach. Unfortunately the losses by translation of the URLs
DAC Overture v2.3
http://diyaudio.org.ua/blog.php?page...download&id=27
(http_diyaudio.org.ua/blog.php?page=download&mode=download&id=27)
are too great:
http://translate.google.de/translate...%26b%3D13%2522

Are this informations also in other languages than only in your Ukrainian language?

[homemade]

Originally Posted by erin

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.

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

[Serge_L]

Originally Posted by tiefbassuebertr

Interesting approach. Unfortunately the losses by translation of the URLs
DAC Overture v2.3
http://diyaudio.org.ua/blog.php?page...download&id=27
(http_diyaudio.org.ua/blog.php?page=download&mode=download&id=27)
are too great:
Google Nachricht

Are this informations also in other languages than only in your Ukrainian language?

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!

[Nazar_lv]

Are this informations also in other languages than only in your Ukrainian language?

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 -