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Geshelli Archel Pro v/s JDS Atom v/s .....

Noob

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#21
The only thing that gives me pause about the Atom is some of the channel imbalance issues that have been spoken of. Though since you're (I assume) maxing the volume on it, this isn't an issue it might turn out to be.

If power is what you lack, and you want to stick to budget, the Magni 3 seems a close contender.
I would say the magni 3 barely powers r70x headphones to acceptable levels. It will be listenable, but it won't be very loud, and it won't be driven properly. Maybe a higher input signal could fix that, but I have not had a great experience using the magni 3 with the r70x.
 

Anubhav

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#22
I would say the magni 3 barely powers r70x headphones to acceptable levels. It will be listenable, but it won't be very loud, and it won't be driven properly. Maybe a higher input signal could fix that, but I have not had a great experience using the magni 3 with the r70x.
That's the very reason i started this thread. Coz i feel that Geshelli is a better setup than JDS Atom.
But am i doing it correctly ? May be not, hence the request to measure and compare both properly
 
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#23
I own the enog2 pro, Archel pro and atom. The Archel puts out way more power and works best with higher impendance headphones. I can max out the atom while watching movies but music is fine. I find the atom to be much cleaner sounding! But I feel more of an emotional connection to my music through the Archel. I should not both Geshelli products are being run through my linear bench top power supply (bass is substantially improved and less harshness on the top end). Even with this the atom still sounds cleaner. They are pretty close otherwise. I should note I've always had the smallest amount of channel imbalance at the very beginning of the volume knob on the Archel but not on the atom. Not enough to ever both me but it is there.
 

Tks

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#24
I would say the magni 3 barely powers r70x headphones to acceptable levels. It will be listenable, but it won't be very loud, and it won't be driven properly. Maybe a higher input signal could fix that, but I have not had a great experience using the magni 3 with the r70x.
High gain + Max volume barely enough to power it o_O my goodness, had no idea an extra 170 ohms would chew through power like that. By that metric, avoid the Atom then for sure. But then again I listen to music at quite low levels compared to most folks (even when I wass a kid I had this sort of OCD of avoiding hearing damage as much I can, it was ingrained into me while seeing people on the subways with volume so loud on their listening devices, I could hear the song fully playing 2 meters away on top of all the noise of a train cart).
 

Noob

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#25
High gain + Max volume barely enough to power it o_O my goodness, had no idea an extra 170 ohms would chew through power like that. By that metric, avoid the Atom then for sure. But then again I listen to music at quite low levels compared to most folks (even when I wass a kid I had this sort of OCD of avoiding hearing damage as much I can, it was ingrained into me while seeing people on the subways with volume so loud on their listening devices, I could hear the song fully playing 2 meters away on top of all the noise of a train cart).
The ohm rating on the R70x is measured at 1k instead of averaged. It has an impedance peak over 900ohms that brings the average higher than one might assume. The sensitivity is also a few dB lower than most high impedance headphones.
 

maxxevv

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#26
High gain + Max volume barely enough to power it o_O my goodness, had no idea an extra 170 ohms would chew through power like that. By that metric, avoid the Atom then for sure. But then again I listen to music at quite low levels compared to most folks (even when I wass a kid I had this sort of OCD of avoiding hearing damage as much I can, it was ingrained into me while seeing people on the subways with volume so loud on their listening devices, I could hear the song fully playing 2 meters away on top of all the noise of a train cart).
Its mostly a sensitivity issue rather than the impedance values. The R70X reads 98db and the HD800 reads 102 dB/1V rms , HD6xx/650 reads 112 dB/ 1V rms
The specific value of the R70x isn't specified but if similar then it needs a fair bit more power than the HD800 and far more than the HD650/6XX.

I have run the HD800 ( which has a similar transient impedance peak to the R70X at about 2.2x its rated impedance) with the Atom and there was more than enough volume by the time my volume knob at 3 o'clock position I have to turn it back a bit. So too the HD6XX, but that stops at 12 at the very most 1 O'clock for the volume pot.

And the Atom was connected via a Khadas Tone Board.
 

Tks

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#27
Its mostly a sensitivity issue rather than the impedance values. The R70X reads 98db and the HD800 reads 102 dB/1V rms , HD6xx/650 reads 112 dB/ 1V rms
The specific value of the R70x isn't specified but if similar then it needs a fair bit more power than the HD800 and far more than the HD650/6XX.

I have run the HD800 ( which has a similar transient impedance peak to the R70X at about 2.2x its rated impedance) with the Atom and there was more than enough volume by the time my volume knob at 3 o'clock position I have to turn it back a bit. So too the HD6XX, but that stops at 12 at the very most 1 O'clock for the volume pot.

And the Atom was connected via a Khadas Tone Board.
Ahhh I totally forgot about the sensitivity spec! Sorry sorry, it makes more sense why the fellow might want more power now!
 
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#28
I also have an archel pro, it's not bad even compare to thx 789 single end.
 
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spronkey

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#29
Got a phone? Install a decent dB meter app, Attach the microphone end a repeatable position on your headphones inside the earcup, play some pink noise, and find the level on each amp that matches.

I've found this can get acceptably accurate for comparing amps. Not so much for comparing between headphones though.
 

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