Quote:
Originally Posted by CGabriel
We have done extensive reasearch into asymetric AC waveforms (DC on the line) which can be caused by a variety of electronic devices today. This problem is also present from the power company in some EU countries and specifically in Australia and New Zealand.
There are some inexpensive devices on the market that can solve the problem for low current devices but they also dramatically hurt audio performance. The Isotek is the only hi-end solution that I am aware of. We have developed prototypes that solve the problem and can handle over 30 A of current and sound quite good even when used with mega dollar amplifiers.
We just haven't decided if it is a problem that would provide a return on investment. The circuit could be added to an existing or up coming power conditioner but in our opinion it would need to be defeatable because 90% of the people would not need it. And then it adds to the cost of the product unnecessarily.
If we created a stand-alone DC blocker product, it would probably be the most expensive product of its type on the market. Necessarily so to perform at a level we feel is adequate to be used with +50K amplifiers without degrading their sonic capabilities.
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Would be interested in a stand-alone DC blocker product. I think one of the advantages would be not adding to the cost of Shunyata products unnecessarily as you mentioned and purchased only for those who need it.
At present, I'm aware of the following offerings:
- GigaWatt DC Offset blocker module (optional with their power distributor/conditioner products)
- Kemp Electronics DC X-TERMINATOR
- PS Audio Humbuster (no longer available?)
- Emotiva CMX-2 Precision Common Mode AC Line Filter With DC Offset Eliminator