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Most DACs have a SMPS, in a few cases an Isolation Transformer may reduce power line noise coming out of the DAC's supply to other components. The DAC itself shouldn't much care about power line quality.
Who has tried using these?
What results did you notice?
Which model(s) did you audition/buy?
Do you still use it?
Does it only work for DACs? What about CDPs?
I have one w 2 sockets. I bought it cheap through a surplus store. It is a serious piece of equipment that cost thousands of dollars new. I plug various digital stuff in it. Anything i think might add noise in the lines.Mine is dead quiet but I have read where others are not. It has no effect on sound... good or bad. I recommend trying it. It looks something like this:http://www.ebay.com/itm/MGE-91092-32T-UPS-Ultra-Isolation-Transformer-120v-250VA-60Hz-120VAC-0-0005pF-/263015448895?hash=item3d3cf1413f:g:ICcAAOSwsXFZMI9o
In Europe, Schnneider residual current Super immune circuit breaker is a very good idea if you have a dedicated line to audio equipment => additional protection in front the harmonics at mains in polluted environments and networks.Why?The electricity network is getting dirtier every day. The widespread use of cheap SMPS, cheap electrical motors, air conditioners (they add DC at mains too).... usually made in East Asia (China). And bad electrical installations in elevators, and...https://www.schneider-electric.com/en/search/inmmunizedhttps://www.schneider-electric.com/en/search/Super+immune
Earth loop-breaker boards-> https://hoppesbrain.com/2017/05/26/earth-loop-breaker-boards/[IMG] http://hoppesbrain.files.wordpress.com/2017/05/diode-shunt-loop-breaker.pngThe ARTICLE, by Rod Elliott (1999)Earthing Your Hi-Fi – Tricks and Techniques-> http://sound.whsites.net/earthing.htm[IMG] http://sound.whsites.net/earth-f4.gif
6A is too much with only 15 watts amp!!!! It is better idea to use the lowest possible amperage because they attenuate much more.Schaffner F2244B:[IMG] http://maty.galeon.com/WP-imagenes/hard/IEC-inlet-filter-Schaffner-FN_9244-specs.pngThe graphs: [IMG] http://maty.galeon.com/WP-imagenes/hard/IEC-inlet-filter-Schaffner-FN_9244-typical-filter-attenuation.png[IMG] http://maty.galeon.com/WP-imagenes/hard/IEC-inlet-filter-Schaffner-FN_9244-cicuit.pngI can use Würth 150 kHz ferrites with the power cables (besides the RF/EMI filters). The usual problem in audio is in the RF < 1 MHz.The ferrites (and very cheap) that are usually seen there are for EMI ( > 1 Mhz), so they are not very useful in audio. They are useful with video.
Some are better than others, but I never recommend transformers. In fact I can say Equi=tech's are not ok until they have some treatment. They'll say if they actually reduce noise, too. An insane statement from an otherwise mostly sane person. As far as SMPS's, it depends on their design too. They're often nasty at common mode noise. But one of the problems is the ground on SMPS's can be made ripe with noise, and transformers & such don't do much about that.
As far as SMPS's, it depends on their design too. They're often nasty at common mode noise. But one of the problems is the ground on SMPS's can be made ripe with noise, and transformers & such don't do much about that.
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