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Review: JDS Labs O2 (Black edition) + O2/ODAC discussion
Mar 2, 2013 at 4:59 PM Post #271 of 543
Why would you need high gain with those headphones and such a hot source? ... just don't set the gain above x3.
 
Mar 2, 2013 at 5:05 PM Post #272 of 543
xnor said:
Why would you need high gain with those headphones and such a hot source? ... just don't set the gain above x3.
Click to expand...

To power HE-500, low gain is not loud enough. The anemic sound does alright by my HD650 (since they're warm anyway) but my 'Schiity' Magni works better with both.

I'm just having a really hard time reconciling my terrible experience with this amp with all the high praise it's getting in this thread. I will try the higher power wall wart, but the Magni is several levels of magnitude better in pretty much every aspect.

Maybe some folks just LIKE a thin sound?
 
Mar 2, 2013 at 5:05 PM Post #273 of 543
xnor said:
Why would you need high gain with those headphones and such a hot source? ... just don't set the gain above x3.
Click to expand...

To power HE-500, low gain is not loud enough. The anemic sound does alright by my HD650 (since they're warm anyway) but my 'Schiity' Magni works better with both.

I'm just having a really hard time reconciling my terrible experience with this amp with all the high praise it's getting in this thread. I will try the higher power wall wart, but the Magni is several levels of magnitude better in pretty much every aspect.

Maybe some folks just LIKE a thin sound?
 
Mar 2, 2013 at 5:53 PM Post #274 of 543
What's your low gain, 2.5x? Maybe you should reconsider your listening level, which seems to be quite high. The sensitivity difference between HD650 and HE-500 is less than 4 dB.
 
You also seem to be confusing thin sound with accurate sound. And no, the magni is far from being better in every aspect. EMI, noise, fixed (imo too high) gain ...
 
Mar 2, 2013 at 5:59 PM Post #275 of 543
Quote:
xnor said:
What's your low gain, 2.5x? Maybe you should reconsider your listening level, which seems to be quite high. The sensitivity difference between HD650 and HE-500 is less than 4 dB.
 
You also seem to be confusing thin sound with accurate sound. And no, the magni is far from being better in every aspect. EMI, noise, fixed (imo too high) gain ...
Click to expand...

Accurate in what way?  Acoustic music sounds more like I'm 'there' with the Magni than the O2 - at least on the HE-500.  Are we saying accurate to transducer or accurate to the music or both or neither?  I have my Magni right near my computer (it's just the most convenient place to put it with my set-up) and the noise floor sounds totally black to me.  
 
Also, I know I seem like a pest, but I really want to get the O2 to work.  I hate being so underwhelmed by a product (although I shut up the ZO2 in a drawer to avoid looking at it and have given up on it with any headphone or IEM I own)!
 
Mar 2, 2013 at 6:23 PM Post #276 of 543
Quote:
disastermouse said:
Quote:
xnor said:
What's your low gain, 2.5x? Maybe you should reconsider your listening level, which seems to be quite high. The sensitivity difference between HD650 and HE-500 is less than 4 dB.
 
You also seem to be confusing thin sound with accurate sound. And no, the magni is far from being better in every aspect. EMI, noise, fixed (imo too high) gain ...
Click to expand...

Accurate in what way?  Acoustic music sounds more like I'm 'there' with the Magni than the O2 - at least on the HE-500.  Are we saying accurate to transducer or accurate to the music or both or neither?  I have my Magni right near my computer (it's just the most convenient place to put it with my set-up) and the noise floor sounds totally black to me.  
 
Also, I know I seem like a pest, but I really want to get the O2 to work.  I hate being so underwhelmed by a product (although I shut up the ZO2 in a drawer to avoid looking at it and have given up on it with any headphone or IEM I own)!
Click to expand...

Probably accuracy of the signal coming out of the amp. If you add something to signal, the sound you hear is less accurate from its original source despite it sounding subjectively better. This can be called synergy in some cases as some coloured amps might "sound good" with a headphone.
 
Mar 2, 2013 at 7:41 PM Post #278 of 543
shazb0t said:
Disastermouse you are the worst. If you refuse to get a standard input voltage dac or a different wall wart then sell your o2 and stop posting about it.
Click to expand...

I don't think I'll do that. I do have an E7. Should I try that with the O2 or is it a non-standard voltage DAC?

Even if I can get it to sound good with the HD650s, I'd consider it a victory.
 
Mar 2, 2013 at 7:50 PM Post #279 of 543
Again, just use a gain less than or equal to 3x (with a 2.25 V source) or 3.5x (with a 2 V source) and turn up the volume control.
You should be able to turn up the volume to about 2 o'clock. Oh and btw, lowest possible gain that does the job is usually best.
 
Mar 2, 2013 at 8:23 PM Post #281 of 543
Mar 2, 2013 at 9:02 PM Post #284 of 543
shazb0t said:
You obviously like Schiit. Get the Modi for your Schiit stack and try it with the o2.
Click to expand...

I have thought about that but aside from a nonstandard power output I don't know if the Modi is better than the MSii+ or not.

Magni is the only Schiit product I have and as much as I like it I can't speak to anything else the company makes.
 
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