Latest Thread Images

The Opamp thread
Oct 24, 2020 at 12:05 PM Post #6,994 of 7,383
Oct 27, 2020 at 1:40 AM Post #6,995 of 7,383
leeperry said:
AD797 and OPA627 cannot be rolled blindly, they need a specific circuit built for them. They'll oscillate and/or sound way colored.

OPA828 is the newest 627, cheap too coz 627's on marketplaces are 99.999999% fake and genuine 627BP's cost a bundle.
Click to expand...
OPA828 was a great call. They sound amazing. They have quickly become my new favorite opamp. Thanks!!!

Audio Addict said:
Has anyone bought any opamps pre-installed on adapters from

https://www.cimarrontechnology.com/product-category/single-channel-op-amps

https://www.cimarrontechnology.com/product/browndog-970601-so8-to-dip8-adapter

They have both single and dual available.
Click to expand...
I have ordered $350+ worth of opamps from them. Great service.
 
Oct 31, 2020 at 6:40 AM Post #6,996 of 7,383
Hello everybody, just one question.. I don't know how easy it will be to answer but I hope to be helped by somebody.. Prepare yourself for a jump in the past because I haven't updated my gear in a long time:
I am currently using a pair of sennheiser hd598 connected to a xfi elite pro (that I think has a JRC NJM4556) and drived by a cmoy bb (altoids amp) that inside has an OPA2227.
Now I'm questioning if it is better to disconnect the cmoy and connect directly the headphones to the external bay of my audiocard..
I've tryied for a short time and honestly I haven't fond a lot of difference (directly from the xfi bay I hear more bass) but don't know what is the best. could you help me?
and maybe suggest me some way to test the audio quality (maybe some music that will be helpful)

thank you
 
Last edited:
Nov 19, 2020 at 5:05 PM Post #6,998 of 7,383
Hello I just bought my first opa from AliExpress with good reviews. But I'm not 100% sure if it's original. OPA1612
IMG_20201119_223314_tigr.jpg
 
Dec 8, 2020 at 1:22 PM Post #6,999 of 7,383
Shtruckk said:
Hello,

I have a topping dx7 pro and i want to replace the stock op-amps (LME 47920 - headphone amp socket).
I was thinking at some discrete op-amps (https://www.aliexpress.com/item/32936027509.html) or something from SPARKOS LABS.
I'm open to any sugestions.

Thank you in advance for your help.
Click to expand...

Did you change your op amps in your DX7 pro?

I saw this Video:


And he is rec the Sparkos SS3602.
I think to try these or the Burson V6.
 
Dec 9, 2020 at 2:43 AM Post #7,000 of 7,383
Hello op amp specialists :L3000:

I would like to change the op amps in my Topping DX7 pro and i picked the Burson V5i just because they fit out of the box (the V6 wouldn't).
Originally the DX7 pro is equipped with LME47920 and in the LPF section LME49720.

Are these the right ones to go with?
https://www.audiophonics.fr/en/comp...mp-v5i-dual-opa-hybrid-dip8-pair-p-13152.html

Shoul i also change the op amps in the LPF section doesn't this really matter at all?

Thanks for you help :)
 
Dec 9, 2020 at 4:47 AM Post #7,002 of 7,383
I've heard that the SparkOS are very bright sounding i thought that the Burson V5is could deliver a more smooth and warmth sound signature.
 
Dec 10, 2020 at 3:30 AM Post #7,005 of 7,383
domiji said:
So you wouldn't change the OP Amps in the DX7 pro?
Click to expand...
In their D90 DAC, they have soldered the LME49720 for LPF, I guess a testament to how well this particular opamp suits their deigns. Topping seems to be doing OPA1612 for I/V and LME49720 for LPF for all their DACs. I was considering doing some rolling in my D50s but I think I will leave the LME49720 in.

Edit: Also SS3602 does not fit the D50s. SS3602 is the only opamp I feel comfortable with swapping blindly in.
 
Last edited:
You must log in or register to reply here.

Users who are viewing this thread

Total: 9 (members: 0, guests: 9)
Back
Top