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Completely Blown Away--Geshelli JNOG3 with SparkoS Dual SS2950 Op-amps

EddNog

Active Member
SparkoS had a 30% off holiday discount on everything, so I couldn’t resist picking up a pair of their dual SS2590 op-amps with DIP-8 adapters (fully assembled since I’m lazy). With those op-amps on hand, I knew I just had to go to Geshelli’s web site and order up a lovely JNOG3 DAC in charcoal to match my Space Gray WiiM Ultra. After some critical listening, I've this much to report so far:

Absolutely comprehensive list of previous DACs I’ve owned in general ranked order prior to getting this DAC:
Topping D90 III Discrete
Denafrips Ares II
Musician Draco
Topping E70 Velvet
HiBy R6 Pro II (simultaneously as streamer and as DAC)
FiiO K11 R2R
Cayin RU7
Cayin RU6
SMSL DO100
WiiM Ultra (simultaneously as streamer and as DAC)
Hidizs S9 Pro Plus Martha
Hidizs S9 Pro

Up until recently, I felt the D90 III Discrete was tops under $1,000. After adding it to my system, I was convinced that a proper 1-bit DAC is as good as it gets (the RU7 is decent, but nowhere close to the D90 III Discrete, almost certainly due to all of the compromises made for it to be compact, portable, and able to run off cell phone power), especially with DSD recordings (which is only a very small portion of my actual listening, at the end of the day). Well, after buying the WiiM Ultra streamer, which converts all DSD to PCM anyway, I decided to return the D90 III Discrete (thanks for the amazing service, Apos!!!) and switch back to the E70 Velvet since everything I was now decoding is PCM and the 1-bit DAC no longer had the same benefits given the cost. I had heard all along that the implementation is more important than the chip, and SparkoS had a 30% off sale, so I decided to go ahead and test that theory by buying the JNOG3 and equipping it with the vaunted SS2590 op-amps. Would it prove to be better than the E70 Velvet, which uses the same delta-sigma chip?

Yes. Oh yes. In fact, I didn’t even receive my upgraded power supply yet (not sure when Teddy Pardo will get my Mini Teddy SE to me from Israel), but I literally didn’t even know my system could sound this good. The soundstage depth and layering are just so holographic now, stunningly holographic, we’re talking better than when I had a Schiit Freya+ preamp in my chain with Linlai E-6SN7 tubes holographic, with even greater air from instruments (like cymbals) and detail extraction than the E70 Velvet while still being so smooth and completely un-fatiguing to listen to. The notes now have this incredible roundness to them, with soft sounds being softer, yet hard sounds attacking harder. The texture, oh the texture…I can sense the strings vibrating inside the piano now on recordings like Dave Brubeck’s Take Five.

The JNOG3 with SS2590s is, at least for me, finally an end-game DAC. Can’t wait to see what effect the Teddy Pardo power supply has (if any…I don’t just believe everything has an effect or benefit, one has to truly be critical when listening critically, especially when an item costs this much, need to be honest and return for refund if it doesn’t deliver as promised) when it comes in.

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-Ed

EDIT: Sorry, I can't fix my typo in the subject line, but 2950 should be 2590. Oops!
 
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My Teddy Pardo Mini Teddy SE power supply arrived today (two days early—thanks, DHL!) and right off the bat improved transparency and presence in the mids, which feel subtly richer. Was not sure if there would be any benefit, but it’s there even if subtle. My first experience with Teddy Pardo, but now I get it—this thing is a keeper!

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-Ed
 
My Teddy Pardo Mini Teddy SE power supply arrived today (two days early—thanks, DHL!) and right off the bat improved transparency and presence in the mids, which feel subtly richer. Was not sure if there would be any benefit, but it’s there even if subtle. My first experience with Teddy Pardo, but now I get it—this thing is a keeper!

View attachment 3373108

View attachment 3373109

-Ed
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Did you order the JNOG3 with the standard opamps knowing that you would be upgrading to the 2590’s?
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Did you listen to the JNOG3 with the stock opamps?
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Sorry, did not bother with that. Wasn’t in the mood to keep going into and out of the unit, and I’d already heard from others how huge of an improvement it is, so didn’t feel the need to bother with the stock op-amps.

-Ed
 
I couldn't agree more!
WiiM Ultra usb out -> SMSL reclocker coax out -> miniDSP Flex (digital) coax out -> Geshelli J3 /w Sparkos 2590's XLR out -> NAD M23 amp.

Phono stage goes into the WiiM Ultra.
The miniDSP also has a coax out to the Topping DAC which drives my sub.
The LHY linear power supply is dedicated to the Geshelli J3.

Super happy with this setup!

20241225_122037.jpg
 
I couldn't agree more!
WiiM Ultra usb out -> SMSL reclocker coax out -> miniDSP Flex (digital) coax out -> Geshelli J3 /w Sparkos 2590's XLR out -> NAD M23 amp.

Phono stage goes into the WiiM Ultra.
The miniDSP also has a coax out to the Topping DAC which drives my sub.
The LHY linear power supply is dedicated to the Geshelli J3.

Super happy with this setup!

View attachment 3381049
Are you using the basic MiniDSP Flex room correction and bass management, or did you buy the DIRAC license for it?

-Ed
 
Are you using the basic MiniDSP Flex room correction and bass management, or did you buy the DIRAC license for it?

-Ed
The miniDSP Flex version I purchased came with the Dirac (2ch) license included at no additional cost. It looks like they are not selling it like that anymore.
 
It's been interesting for me reading this post. I've had my eye on the JNOG3 for some time as I really could use the extra inputs it provides. I do have one question. With various op amps at what point do they begin to dominate the sound over the amp? I have an older Fisher 800B tube receiver which I dearly love for the sound it produces. However, when I read about the effects of the various op amps I get concerned with the potential of the DAC to compromise or change the sound of my amp. I'd appreciate any input on which op amp would be the most "neutral" and how that would be determined as I'm not looking to "color" the sound reproduction of my two-channel system. Many thanks and I appreciate this post.
 
The stock, basic op-amps are fairly neutral, as are any of the SparkoS options. They primarily add to holography/soundstage/imaging and detail extraction.
It's been interesting for me reading this post. I've had my eye on the JNOG3 for some time as I really could use the extra inputs it provides. I do have one question. With various op amps at what point do they begin to dominate the sound over the amp? I have an older Fisher 800B tube receiver which I dearly love for the sound it produces. However, when I read about the effects of the various op amps I get concerned with the potential of the DAC to compromise or change the sound of my amp. I'd appreciate any input on which op amp would be the most "neutral" and how that would be determined as I'm not looking to "color" the sound reproduction of my two-channel system. Many thanks and I appreciate this post.
 
It's been interesting for me reading this post. I've had my eye on the JNOG3 for some time as I really could use the extra inputs it provides. I do have one question. With various op amps at what point do they begin to dominate the sound over the amp? I have an older Fisher 800B tube receiver which I dearly love for the sound it produces. However, when I read about the effects of the various op amps I get concerned with the potential of the DAC to compromise or change the sound of my amp. I'd appreciate any input on which op amp would be the most "neutral" and how that would be determined as I'm not looking to "color" the sound reproduction of my two-channel system. Many thanks and I appreciate this post.
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It sounds as if all you would need is a J2 with the AK4493 and stock opamps. It sounds very good. My J2S with the 4499 and Sparkos opamps does not sound any better, just different.
 
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It sounds as if all you would need is a J2 with the AK4493 and stock opamps. It sounds very good. My J2S with the 4499 and Sparkos opamps does not sound any better, just different.
Probably, but I too could use the additional inputs the JNOG3 provides.
 
Probably, but I too could use the additional inputs the JNOG3 provides.
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I think the front panel of the J3 is confusing you, making you think it has more inputs than a J2. They went to that style front panel on the J3 because the buttons on the front of the J2 were confusing to owners. You had to know the sequence to get to the one you had connected, or simply keep pushing the button on the right until you heard music.

All JNOG have optional usb input, and all have two coax, one front, one rear, and two optical, one front, one rear. No differences. Other than the front panel.
 
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I think the front panel of the J3 is confusing you, making you think it has more inputs than a J2. They went to that style front panel on the J3 because the buttons on the front of the J2 were confusing to owners. You had to know the sequence to get to the one you had connected, or simply keep pushing the button on the right until you heard music.

All JNOG have optional usb input, and all have two coax, one front, one rear, and two optical, one front, one rear. No differences. Other than the front panel.
Thanks for the correction. Somehow, I had it in my mind the JNOG2 only had three.
 
Thanks for the correction. Somehow, I had it in my mind the JNOG2 only had three.
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I see from your profile that you are 65 years old. With 65 year old hearing I suggest getting yourself a J2 AK4493 for $250 and enjoy the music. A J3 with all the options is over $800 and in your case I do not think it is worth it. I can say this with confidence because my J2S with the supposedly better AK4499 DAC chip and Sparkos opamps was not worth the extra money.

I use my standard J2 with a Dynaco ST-35 tube amp and a pair of EPI M100 speakers that I recently rebuilt, and the system sounds fantastic.
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I see from your profile that you are 65 years old. With 65 year old hearing I suggest getting yourself a J2 AK4493 for $250 and enjoy the music. A J3 with all the options is over $800 and in your case I do not think it is worth it. I can say this with confidence because my J2S with the supposedly better AK4499 DAC chip and Sparkos opamps was not worth the extra money.

I use my standard J2 with a Dynaco ST-35 tube amp and a pair of EPI M100 speakers that I recently rebuilt, and the system sounds fantastic.
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Hey, there you go. Marketing age appropriate hifi gear. That would raddle some traps. Thanks for the advice on DACs and I will take it into serious consideration.

By the way, I'm a Dynaco fan from way back. Got my first ST-70s in the mid/late 80s and still have them. I also have a couple MK III projects going. My working system consists of a Fisher 800B, a set of Klipsch Heresys coupled to a stereo pair of SVS 1000 Pro subs with a Schiit Modi DAC. I found the Fisher in a shop back in the late 80s for about 85-bucks and, in the ensuing years, have drug it with me all over the place. It was rebuilt about a year and a half ago. What are you using for a preamp on the ST-35? I have a PAS 3X, but I don't think the Dynaco preamps have aged quite as well as their amps.
 
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