Alrighty DAC people.
I am gearing up for an op amp shootout. It looks like I'll get a chance to try some cool opa's, and I'm thinking maybe I should buy a few other models, have some people over, and see how/if there is a difference in sound. I'd like to try 4 opa's
1. Ada4627 [running now]
2. [Got something for this slot already]
3. Suggest something!
4. Suggest something!
In particular I would like to try one op amp that is considered cheap and less than ideal. I want at least one opa to test something that is regarded as more "bottom shelf". Hopefully that makes sense.
What do you think?
I am gearing up for an op amp shootout. It looks like I'll get a chance to try some cool opa's, and I'm thinking maybe I should buy a few other models, have some people over, and see how/if there is a difference in sound. I'd like to try 4 opa's
1. Ada4627 [running now]
2. [Got something for this slot already]
3. Suggest something!
4. Suggest something!
In particular I would like to try one op amp that is considered cheap and less than ideal. I want at least one opa to test something that is regarded as more "bottom shelf". Hopefully that makes sense.
What do you think?
Yes, 797 is still my favorite, even after trying some other op amps like opa828. I have changed the cap to 2000pf, with 3k feedback resistor bypassed with 82pf capacitors. I ordered my 797brz from arrow.com. But, to be honest, if I did not have 797 available, I would probably be just as happy with opa828, ss3601 or ada4627-1.
Alrighty then,
Maybe not real creative but how about
LM 6171 Miro’s personal choice for overall value and then maybe an AD 797
I’m currently building up a psu1 and psu2 for an ad1862 dac and as usual I’m uncertain about ordering something to replace an “out of stock “ item as recommended on the bom. Psu2 calls for a Panasonic 100uf/25vdc capacitor at locations C9-12 and C25-28. I’m slowly becoming familiar with the data sheets and one thing that stands out is the ripple current rating. The panasonic is around 450ma which is much higher than most of the other capacitors that are in stock. So this is my long winded way of asking for a suitable replacement. And of course how critical is ripple current in this location?
Thanks
I think the 5534 should be in the mix, not bottom shelf per se but definitely a well drink.
Actually just ordered these!
So far placed an order for :
TL071
NE5534
LM741
some of the oldsters
So inexpensive, not a huge hit to order multiple sets
Miro, do you need to change something else in the harness for the LM6171? Except for the op amps themselves. Have you listened to "our" DAC with Pedja Rogic-based output?
@Traktorist3d Do you mean Pedja’s OPA861? I did not try, but it can be great I/V converter 
Probably on ad844, for example according to this scheme, the author sells bare boards for $ 15, I think ...@Traktorist3d Do you mean Pedja’s OPA861? I did not try, but it can be great I/V converter
Please share the links if there are rowers and BOMs. Very interesting how it sounds compared to the stock outlet ...I did, it’s one of my favorites
Hi Miro,
The first post has become utterly confusing now! It’s not easy to see how you linked all of the shortcuts to the different Gerber files in this giant thread. When you get a chance can you add the files and supporting info for the OPA861 I/V output stage that I had posted earlier.
Thank you
The first post has become utterly confusing now! It’s not easy to see how you linked all of the shortcuts to the different Gerber files in this giant thread. When you get a chance can you add the files and supporting info for the OPA861 I/V output stage that I had posted earlier.
Thank you