Thank you FritzS but the Magz's screenshots were crystal clear to where i should do the solder work (pins) i'll pick the the caps suggestion btw, wanna try them all honestly so more suggestions means more tests 😉 P.S proud akg712 owner (some tips? 😀)
You swap one side of a stereo unit and compare the 2 sides in mono. The excuses are endless, the real one is "I can't admit my hearing isn't as good as I think, it must be as good as all the other people on the internet that SAY they can hear (place your audiophool myth here).
The C0G ceramics I used under the V6 are Digikey part# 445-4801-ND.
Another good choice would be .1uF WIMA FKP3 100V film and foil types.
Thank you again Magz! Can i use it even with other opamps or is it limited to the bursons or with others it wouldn't be benificial?
I usually use a +/- bypass cap with any opamp, as well as decoupling caps from each of the + and - rails to ground, which is standard practice for opamp circuits.
The caps I've listed should work well for any opamp.
The caps I've listed should work well for any opamp.
I like the sound of OPA1656. I think I know why, as it has dominant second harmonic (albeit low overall THD) plus it can drive 100mA. I agree with Adason, when I put an ABX switch box on amp or speakers and level match precisely. It’s almost impossible to tell in the short term test unless it was a very bad or different type of amp or speaker.
But long term, days to week and listen to 200 tracks. You definitely can tell which one you prefer.
I also listen to amps for a good week or two before measuring them so I don’t give myself measurement and expectation bias.
Having said that, I am curious what the Burson sounds like. Most of my gear has SOIC-8 SMT pads - not meant for swapping opamps but I want to install a DIP8 socket on the SMT pad.
Is there a DIP to SOIC (on the PCB) adapter? I have looked and can’t find one.
But long term, days to week and listen to 200 tracks. You definitely can tell which one you prefer.
I also listen to amps for a good week or two before measuring them so I don’t give myself measurement and expectation bias.
Having said that, I am curious what the Burson sounds like. Most of my gear has SOIC-8 SMT pads - not meant for swapping opamps but I want to install a DIP8 socket on the SMT pad.
Is there a DIP to SOIC (on the PCB) adapter? I have looked and can’t find one.
The topology can make a different decoupling scheme work better, it isn’t always the way you’ve described, just most of the time. Some op amps actually work better with only a +/- cap.
I agree regarding long term listening vs short term, definitely separates the chaff from the wheat!
One question for the experts here,
I would like to know if it's possible to replace a single opamp with a dual opamp on the AE9
Let's say i would like to test the OPA1656 on all the inputs, is it possible or there may be some problems with it?
I would like to know if it's possible to replace a single opamp with a dual opamp on the AE9
Let's say i would like to test the OPA1656 on all the inputs, is it possible or there may be some problems with it?
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Yes, you need to add a few components to render the second opamp “neutral”. There was a special helper board that Jhofland made to convert a opa1656 into a single DIP8 adapter for plug and play into single DIP8 opamp sockets. .
Any link or image on how to do so? I think plug and play will not work with this.
What do u mean with "neutral"?
What do u mean with "neutral"?
This TI technote shows how to properly handle the unused channel of a dual opamp that is used as a single opamp.
https://www.ti.com/lit/an/sboa204a/...41656&ref_url=https%3A%2F%2Fwww.google.com%2F
Jhofland created these adapter boards so I could use the OPA1656 as a single DIP8 opamp for an AD1862 DAC project.
https://www.ti.com/lit/an/sboa204a/...41656&ref_url=https%3A%2F%2Fwww.google.com%2F
Jhofland created these adapter boards so I could use the OPA1656 as a single DIP8 opamp for an AD1862 DAC project.
Attachments
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Thank you for the pictures, so it's actually possible with some work.
Is it possible to buy those boards?
is XRKAudio the Johfland's company?
XRKAudio | Etsy
Is it possible to buy those boards?
is XRKAudio the Johfland's company?
XRKAudio | Etsy
No, I shared the gerber files for pcb manufacturing and supporting documentation on post #1250 of this thread:
DAC AD1862: Almost THT, I2S input, NOS, R-2R
Its a DIY project, you have to buy all the components and have the pcb’s made to build these yourself.
DAC AD1862: Almost THT, I2S input, NOS, R-2R
Its a DIY project, you have to buy all the components and have the pcb’s made to build these yourself.
Jhofland is one the best electrical circuit designers on DIYA and I make and sell many of his designs in my shop. We collaborate together on a lot of projects. Many of them commercial products.
Go to JLCPCB.com and upload the Gerber file. It will cost about $2 plus shipping (which is about $15 for DHL).