Quote: Originally Posted by ccschua the OPA will normally last very long, due to discrete components. Perhaps are u using the extension wire, is the extension leads broken? pls try to connect directly. I've tried to connect the OPA directly onto the board without using the...

Hi guys, Hope someone can help me here. I had the OPA-Earth install for nearly 2 months now. Suddenly I heard a pop on the right channel and now I've lost sound on the right channel altogether. I've switched back to the OPA627 and the Zero is fine, which means that it is the Earth. Has...

Gee with all this HDAMs talk, I am tempted ... Quick questions ... if I swap the DAC OPAMP with the OPA-Earth in the Zero, can I still close the case ? What is the optimal length in terms of extension cable for the OPA-Earth, the standard extension cable from Audio-GD is 5cm is that long...

Sorry newbie question here. Just got the Zero DAC and wanted to start playing with mod. When you all said OPA627 + LT1364, do you all mean the OPA627 on the brown dog adapter on the large board and the LT1364 for the smaller board ? I've opened up the DAC and the smaller board has 2 chips. So I...

Thanks for the input so far. Is nice to get so many responses and ideas from here. Yes, I am afraid of the smoking thing as well, I might have to check with him on that, thank you lmilhan for pointing that out. If I can replace the "ear pad" , I guess that would help. Is there a place that...

Thanks guys, So I guess the consensus is that I should go for it !! Yeah, I've been looking at the for sale forum but most will only ship to continental US, so that is out for me. I am still worry about the quality of the headphone, he does look like he would have taken good care of them...

Hi guys, Thanks for the advice so far. The headphone is a Beyerdynamic DT770Pro, My local price search engine found a site selling at AU$315 new ( I am in Australia, BTW ) and he is willing to sell for AU$175. I am very new to this and I've notice that this headphone has been quoted to be...

Hi guys, The brother of a friend of mine is a DJ at a night club and he has a pair of headphone that he would like to sell. According to him, the phone is only been used for about a year and he is willing to sell it at a discount to me. My questions... what can possible go wrong with a...

Okay, that is easy to do !!

Hi, I am new to the world of headphone amps. I've noticed that many of you said "burning-in" before using the amp, what exactly do you do there ? Just hook up the amp and play music for 200-400 hours ?? Or is there some sort a frequency generator ( or a recorded CD ) ?? Thanks Ted