My C&C XO just stop working a few weeks ago. the red bulb on the right is always on. The red light should turn on when the the input volume is way too high. I try everything but it always turn on with the red bulb on, which it will not produce any sound. I really miss the amp as my denon D2000...

I just tried my friend HD380 pro and it blows me away. I use my C&C XO portable amp to power it up and I never knew my portable amp is pretty good. I usually use my amp for shure SE530 and it does not make that much different, but when I plug HD380 to it is just another world of sound...

I just tried my friend HD350 pro and I am absolutely amazed by how it sound coupled with my C&C OX portable amp. It has great tight bass and very crisp clear treble. My shure se530 is no comparable to this headphone. This HD350 is just another level. It made me to look into a new headphone...

After reading Skylap great review for portable amp I have decided to get one of these three the Leckerton Audio UHA-3, C&C XO and Practical Devices XM4. Leckerton Audio UHA-3: As Skylap said that this is great amp for bass lover. As my ears never get enough of bass punch, I think this amp...

I just bought shure se 530 from ecost. It arrive yesterday and i was very excited, but when i tried it on I was very disappointed with the sound quality. There is not much different between the sound quality of iphone original earphone and the se530. The sound from se530 was mostly high very...