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Forget the endless PC arguments, what about all our transformer equipment?

So, we have all seen the endless arguments about whether power cords make a sonic difference. Also, the many threads all over multiple boards, concerning this issue and eventually some troll for or against causes the administrator to close the thread (big grin).

However, i have not really seen similar discussions regarding equipment powered by "walmart" transformers, with tiny tiny (28?, 30? g?) power wires. I am thinking apple tv, for those who still use iTunes (and associated lossy files), cat5 switchers, and various other powered entities that either generate, modify the musical signal, or simply are inherent in the system itself. Has anyone ever addressed this concern in any way? Just curious and wondering....

Thanks

128x128northernescape
3 responses Add your response
randy-11
1,913 posts
 
I use iTunes with lossless files - not sure where you're headed with that

transformers are often used to isolate noise from switching power supplies and there is a very long thread on computeraudiophile.com about that

the size of the "tiny power wires" is simply based on current draw of the device

can you refine your question?
lowrider57's avatar
lowrider57
5,417 posts
 
I think you meant wall-warts. They are switch mode psu’s (SMPS) that can add noise to the component and can bleed noise back into the AC source.

If this is what you mean, then it is best to replace them with a linear power supply containing a toroidal or R-core transformer. This would provide cleaner power and lower the noise floor. There are also now some good quality SMPS with transformers that can be substituted for a stock wall-wart.
lowrider57's avatar
lowrider57
5,417 posts
 
I think it depends on what type of device you are powering. If it is an audio component such as a DAC or TT motor, it would be wise to replace the wall-wart with a better PSU, which includes the transformer and better power cable.
For a laptop or tablet running a digital library, an AC wall adapter might be fine due to portability reasons. Although, battery power would most likely provide better SQ for audio files.
Some AC adapters convert AC from the wall to DC for the device, some pass AC thru the transformer to the device. As stated above, the thin gauge wire provided is based on the current draw of the device.
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