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The ZO2 Has Landed. - Page 36

post #526 of 607

Ok I just tested the ZO via the headphone out on my Hifman 601 (I posted the reasoning above) and I mus say the hiss is still present but its not major like it is with IEMs. I mean its not very loud even when music isn't playing. But if they could fix this issue. And maybe the volume control for more lower volume listening, we'd have a winner on our hands. This product is truly good once you get past its flaws.

post #527 of 607

I've been trying the ZO with my Ultrasone Pro 900s and Atrio M5s through a few different sources (laptop headphone out, phone headphone out, and Zune HD headphone out). I must say, the ZO2 certainly does make me realize how much better these headphones can sound with an amp. Unfortunately, I'm not able to go much above the minimum contour level before I get flabby and distorted bass.

 

My headphones have a lot of bass to begin with so perhaps something like the ZO2 isn't an ideal amp for my needs. I did notice hiss with my Pro 900s but it was masked by the music. While it wasn't a huge inconvenience, it was upsetting. I didn't notice it as much with my Atrio M5s, though, which seems odd.

 

I was constantly adjusting the volumes and the contour level hoping to find a perfect balance. It was surprisingly easy to introduce distortion into the track.

 

I'm still on the fence about this. While it does sound surprisingly good, having it always set to the lowest contour setting seems like a waste. I may as well just get small little FiiO to use strictly as an amp.

 

I will continue to play around with it in hopes of changing my mind. As of right now, I would almost be tempted to return it or sell it and cut my losses. I'm not giving up yet, though!

post #528 of 607
Quote:
Originally Posted by LarryKingsShoes View Post

I've been trying the ZO with my Ultrasone Pro 900s and Atrio M5s through a few different sources (laptop headphone out, phone headphone out, and Zune HD headphone out). I must say, the ZO2 certainly does make me realize how much better these headphones can sound with an amp. Unfortunately, I'm not able to go much above the minimum contour level before I get flabby and distorted bass.

 

My headphones have a lot of bass to begin with so perhaps something like the ZO2 isn't an ideal amp for my needs. I did notice hiss with my Pro 900s but it was masked by the music. While it wasn't a huge inconvenience, it was upsetting. I didn't notice it as much with my Atrio M5s, though, which seems odd.

 

I was constantly adjusting the volumes and the contour level hoping to find a perfect balance. It was surprisingly easy to introduce distortion into the track.

 

I'm still on the fence about this. While it does sound surprisingly good, having it always set to the lowest contour setting seems like a waste. I may as well just get small little FiiO to use strictly as an amp.

 

I will continue to play around with it in hopes of changing my mind. As of right now, I would almost be tempted to return it or sell it and cut my losses. I'm not giving up yet, though!


It seems they will have to adjust the gain on this amp and somehow make the volume pot with more lower volume levels and that should fix the issue. If you read earlier in this thread the digizoid rep. said they will fix the issue for us. Meaning we will have to ship the unit back to them eventually.

 

post #529 of 607
Quote:
Originally Posted by lee730 View Post


It seems they will have to adjust the gain on this amp and somehow make the volume pot with more lower volume levels and that should fix the issue. If you read earlier in this thread the digizoid rep. said they will fix the issue for us. Meaning we will have to ship the unit back to them eventually.

 


Please re-read that and tell me you werent unconscious when you wrote it. 'more lower volume levels' is like something straight out of Spinal Tap.

 

Clearly, the default gain on this thing is just too high - period. I'm sorry, but world-class companies just dont ship product that is so inherently flawed. Would BMW sell you a car that wont go anywhere at less than 20mph, no matter how lightly you caress the throttle ?
 

 

post #530 of 607
Quote:
Originally Posted by estreeter View Post


Please re-read that and tell me you werent unconscious when you wrote it. 'more lower volume levels' is like something straight out of Spinal Tap.

 

Clearly, the default gain on this thing is just too high - period. I'm sorry, but world-class companies just dont ship product that is so inherently flawed. Would BMW sell you a car that wont go anywhere at less than 20mph, no matter how lightly you caress the throttle ?
 

 


If they are willing to make up for the mistake that's all that matters at this point. You are right though that they don't have an excuse for such a mistake but its done and over. The next thing to do is to fix the problem. And yes I know gain is directly linked with volume. But regardless of what they do there needs to be more headroom for the volume control as there is too much volume even on minimal settings.

 

post #531 of 607

ZERO hiss on HO and LO of my IP4S and Ultrasone 900s. Black as night background.

post #532 of 607


 

Quote:
Originally Posted by estreeter View Post




Please re-read that and tell me you werent unconscious when you wrote it. 'more lower volume levels' is like something straight out of Spinal Tap.

 

Clearly, the default gain on this thing is just too high - period. I'm sorry, but world-class companies just dont ship product that is so inherently flawed. Would BMW sell you a car that wont go anywhere at less than 20mph, no matter how lightly you caress the throttle ?
 

 



JH Audio is considered cream of the crop around here and they bungled their amp release much worse.  BMW has safety recalls. People can die from those mistakes. You people need to lighten up. 

 

post #533 of 607

I know what Lee730 is talking about, it's a case of all or nothing.  At the lower contour settings you don't hear much benefit from the ZO2, but in order to get the most out of it, were it makes a difference you need to boost the contour level up to the point where you start to hear distortion and muddy sounds.  It depends on what you are listening to, but I understand what he is saying.

post #534 of 607
Thread Starter 
Quote:
Originally Posted by audiogamma View Post

ZERO hiss on HO and LO of my IP4S and Ultrasone 900s. Black as night background.



You wouldn't hear it with the 900s, it seems to be related to IEMs and other sensitive headphones only.  It didn't exist with my 750s.

post #535 of 607
Quote:
Originally Posted by SoulSyde View Post



You wouldn't hear it with the 900s, it seems to be related to IEMs and other sensitive headphones only.  It didn't exist with my 750s.



LarryKingShoes mentioned some hiss with his 900s. Just adding my experience.

post #536 of 607
Thread Starter 

Gotcha, I missed that post.  I agree with you though.

post #537 of 607

My next question is when can we get this issue resolved? Id like to know a time?

post #538 of 607
Quote:
Originally Posted by audiogamma View Post



LarryKingShoes mentioned some hiss with his 900s. Just adding my experience.



I can hear some hiss with my V-Moda M-80's, too.

post #539 of 607

No hiss with IE-8's. 

post #540 of 607


 

Quote:
Originally Posted by burtomr View Post

No hiss with IE-8's. 



 

 

Now that's quite surprising. I'd figure the IE8s would have hissed like a mofo. At least my last pair was very sensitive with gain and hiss.

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