[estreeter]

Without wanting to disparage anyone in this thread, I often wonder if some of the 'hissing' issues are down to individual Tinnitus or other hearing issues. We are constantly surrounded by environmental noise - traffic, aircon, whatever - and the sensation of having IEMs blocking out everything in the outside world sometimes makes me acutely aware of my own breathing/heartbeat etc - not exactly 'hissing' (thankfully ..) but still uncomfortable.

 

[Grev]

I do notice that if I plug in the chords or turn it on first (which I don't really remember), the ZO2 won't give me a sound which I have to turn everything off first then start plugging in everything.  If you guys know what I mean.

 

[au5t3n5]

Hmm... I did not get a thank you note that others got with my updated version.
 
I guess I'll just go cry a river.
 

 

[drbluenewmexico]

Digizoid is offering upgraded replacement zoo to those who had early orders that had problems with hiss or other featuresl
see their website for replacement offer!!!!   

 

[au5t3n5]

Yep. I already got mine, it is much better!
 
Quote:

Digizoid is offering upgraded replacement zoo to those who had early orders that had problems with hiss or other featuresl
see their website for replacement offer!!!!   

 
 

 

[5370H55V]

Quote:

Without wanting to disparage anyone in this thread, I often wonder if some of the 'hissing' issues are down to individual Tinnitus or other hearing issues. We are constantly surrounded by environmental noise - traffic, aircon, whatever - and the sensation of having IEMs blocking out everything in the outside world sometimes makes me acutely aware of my own breathing/heartbeat etc - not exactly 'hissing' (thankfully ..) but still uncomfortable.

While I can't speak for others, I'm positive I haven't imagined the hiss with the hje900's, they're a very hiss-prone pair of IEM's. Even when I had the E11 it was the only pair that had audible hiss with the amp. Others such as the meelec a151's and m6 were silent, but you could really hear it with the hje's.

 

[DigiFi]

I just bought a pair of ultrasone 2900s.  Their impedance is low, so they are an easy pair of headphones to drive (40ohms).  I have them plugged into my denon 591 receiver and they sound fantastic.  I just would like to give them some more oomph so I'm hoping that if I connect the Digizoid between the headphone jack and my headphones, my listening experience will improve.
 
Anyways...I'm so on the fence between Fiio 11 and Digizoid.  I'm waitng for more digizoid recall reviews.  I want digizoid for the new sound modification technologies, but I also would like the Fiio because it has high gain and low gain settings.  I don't know which would be a better marriage for my 2900.
 
Any ideas?

 

[deadkenny64]

I have mild to moderate tinnitus and could hear the hiss over the normal ringing I have.  When I swapped out my IEMs for less sensitive cans the hiss was gone.  I realize that the hiss was easily masked by the music but a blacker background improves the quality of the vocal and dynamic music that I like.
 
Quote:

Without wanting to disparage anyone in this thread, I often wonder if some of the 'hissing' issues are down to individual Tinnitus or other hearing issues. We are constantly surrounded by environmental noise - traffic, aircon, whatever - and the sensation of having IEMs blocking out everything in the outside world sometimes makes me acutely aware of my own breathing/heartbeat etc - not exactly 'hissing' (thankfully ..) but still uncomfortable.

 

 

[The Larch]

I got my "fixed" ZO2 back and it is a mixed bag. The hiss is greatly lessened, but now the unit does not amplify. It is a volume limiter. They also disabled the pass though mode and I miss it a lot.
 

 

[louisnomad]

Quote:

Without wanting to disparage anyone in this thread, I often wonder if some of the 'hissing' issues are down to individual Tinnitus or other hearing issues. We are constantly surrounded by environmental noise - traffic, aircon, whatever - and the sensation of having IEMs blocking out everything in the outside world sometimes makes me acutely aware of my own breathing/heartbeat etc - not exactly 'hissing' (thankfully ..) but still uncomfortable.

Nope! It is a hiss, for sure. And it is 2 or 3 times louder than FiiO E5. I thought I would never notice the hiss with music playing, but with quiet music I can hear the hiss with MEElectronics A151. I will try another IEMs later today... 
 
 

 

[gaspir324]

How long did it take it to ship for you? And I'll repeat my earlier question: Has anyone tried to pair ZO2 with IEMs with impedance less than 10Ω?

 

[Varley]

Still waiting on my ZO 2 V.2 

 

[rezel]

I'd rather stay with my (nearly non-existant hiss) and keep my amplification and bypass mode than have my Zo2 "fixed".
Maybe I'll try sending once they get to "revision 3" or something.

 

[louisnomad]

Quote:

I'd rather stay with my (nearly non-existant hiss) and keep my amplification and bypass mode than have my Zo2 "fixed".
Maybe I'll try sending once they get to "revision 3" or something.

I'm with you on this choice... Will keep it just like it is right now, and wait for future revisions from DigiZoid...
 

 

[Jae304]

I got my RMA number from digizoid but I'm having a hard time deciding what to do now.  I don't care about bypass mode but am concerned about lack of amplification with the revised ZO 2.  My unit is actually pretty decent, as it doesn't have too much hiss and no popping when powering off/on so I'm afraid of getting something "worse" when I get it back.  
 
For those of you that did the exchange -- is amplification completely removed or just reduced?
 
Decisions...