oxus
New Head-Fier
- Joined
- Aug 30, 2010
- Posts
- 3
- Likes
- 0
Hi guys,
This is my first post here.. Please be gentle..
I just bought this CMOY copy from the seller:
http://cgi.ebay.com/New-Portable-Hi-Fi-Stereo-Amp-CMOY-Headphone-Amplifier-/230516969458?pt=LH_DefaultDomain_0&hash=item35abe1cff2
I am wondering if there is anyway I can improve the quality? Maybe changing opamp? Or by improving the circuit a little?
I received comments from another ebay seller saying that: "[size=10pt]It uses a very simple circuit which gets its virtual ground from the center tap of two batteries, in theory fine BUT in the real world batteries go down at different rates this will cause an imbalance and a large DC offset, this offset will be amplified and can damage headphones. the better amps on ebay use a rail splitter or a buffered ground to avoid these problems."[/size]
[size=10pt]Is this true? Are there anything I can do to improve the circuit or prevent my headphone from being blown up?[/size]
The second question: I bought this CMOY to try out the effect of an amplifier. I have a 2nd gen iPod Nano and a Sansa Clip. Does the sound improve if I use the LOD on the nano? Or is it similar? I have heard conflicting informations on this.
The headphones I have are: JVC S150, JVC FXC50, Sennheiser IE8, and Altec Lansing UHP336.
Thank you in advance!
This is my first post here.. Please be gentle..
I just bought this CMOY copy from the seller:
http://cgi.ebay.com/New-Portable-Hi-Fi-Stereo-Amp-CMOY-Headphone-Amplifier-/230516969458?pt=LH_DefaultDomain_0&hash=item35abe1cff2
I am wondering if there is anyway I can improve the quality? Maybe changing opamp? Or by improving the circuit a little?
I received comments from another ebay seller saying that: "[size=10pt]It uses a very simple circuit which gets its virtual ground from the center tap of two batteries, in theory fine BUT in the real world batteries go down at different rates this will cause an imbalance and a large DC offset, this offset will be amplified and can damage headphones. the better amps on ebay use a rail splitter or a buffered ground to avoid these problems."[/size]
[size=10pt]Is this true? Are there anything I can do to improve the circuit or prevent my headphone from being blown up?[/size]
The second question: I bought this CMOY to try out the effect of an amplifier. I have a 2nd gen iPod Nano and a Sansa Clip. Does the sound improve if I use the LOD on the nano? Or is it similar? I have heard conflicting informations on this.
The headphones I have are: JVC S150, JVC FXC50, Sennheiser IE8, and Altec Lansing UHP336.
Thank you in advance!