tropicalrips 0 Report post Posted December 25, 2003 thinking of trying out some op-amps, some of the choices in the poll i hav tried some others are new to me if u tried any of the op-amps do post some thoughts on it too Share this post Link to post Share on other sites
jasonhanjk 0 Report post Posted December 25, 2003 No AD8610...... Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 25, 2003 (edited) ok i add it in, is that a single channel op-amp? opps i can't edit the choices...can the mods do it? Edited December 25, 2003 by tropicalrips Share this post Link to post Share on other sites
jasonhanjk 0 Report post Posted December 25, 2003 I like the AD8610 opamp over OPA627 and OPA314..... Share this post Link to post Share on other sites
Guest Ruach Report post Posted December 26, 2003 (edited) my favourites are OPA627 and AD825 (using a Browndogs adaptors) Edited December 26, 2003 by Ruach Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 26, 2003 i'm going to try the LM833 & NJM4556 the specs on the LM833 puts it as a dedicated "audio" chip, similar to the 2134 but lower slew rated. the NJM4556 has high current output, about the same as the EL2001cn buffers, will try them in an A47 design (stacked) both these op-amps are very cheap, below $2 so even if they don't sound good can still use them for board testing Share this post Link to post Share on other sites
N@Z 0 Report post Posted December 27, 2003 Sorry it took so long to edit the poll. I've added in ad8610 & 8620 too. Share this post Link to post Share on other sites
Tenson 0 Report post Posted December 28, 2003 Seems there are not a lot of fans of the opa! That?s burrbrown isn?t it? Just a silly question now, what is the difference between a buffer and an op-amp? I mean in building a PPA I have seen people talk about swapping the buffers for op-amps or something to make it cheaper. My understanding of a buffer is that it is something that can store a bit of a signal and then release it at a slightly later time. Like a buffer on your CD-R drive! Share this post Link to post Share on other sites
Q00 0 Report post Posted December 28, 2003 i cant make a vote because i havent heard the rest to make a fair comparison Share this post Link to post Share on other sites
dreamie 0 Report post Posted December 28, 2003 no OPA627s but i still prefer the AD8610s... btw Ruach, i'm w00t from echoloft. Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 28, 2003 I mean in building a PPA I have seen people talk about swapping the buffers for op-amps or something to make it cheaper. my A47 variant is using an op-amp as a buffer instead of buffer chips, makes it cheaper then building a Cmoy Variant with 2 buffers u guys only vote the high-end super Ex op-amps should giv the cheaper ones a try, u'll be surprise by some of them just need to tweak the design a little Share this post Link to post Share on other sites
master 0 Report post Posted December 28, 2003 How about 5532? Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 28, 2003 How about 5532? is it also from the JRC family? my NJM4556 JRC is sounding very good, especially when used in A47 variant amp. it has some of the qualities of the OPA2134, with higher output current , bought from SLT at $1.60 each Share this post Link to post Share on other sites
master 0 Report post Posted December 29, 2003 is it also from the JRC family? my NJM4556 JRC is sounding very good, especially when used in A47 variant amp. it has some of the qualities of the OPA2134, with higher output current , bought from SLT at $1.60 each NJM4556 having higher THD as compare with 5532, though it can drive higher current. Share this post Link to post Share on other sites
fishball79 0 Report post Posted December 29, 2003 (edited) Why dont have NE5532? I'd vote for that... Mod Edit: If you guys want to add in the other op-amps mentioned, I will have to remove the others items (preferably the one's still with '0' votes as the poll can only take 11 items max. Edited December 29, 2003 by N@Z Share this post Link to post Share on other sites
