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RE: Capacitor or transformer coupling?

I'd love to listen to a silver interstage, but cost-wise, likely never going to be one sitting on anything I build. I'm sure they are a big step up. A couple years ago I bought a pair of the ITs used in the Audio Note IT Mono Blocks (regular EI core, not silver). So, over the years I have built many cap coupled, direct coupled and a couple IT coupled designs. I would say that direct coupled with a good PS is very hard to better, however you do face the issues of a lot of wasted heat and upper limits on the H+ (before getting into insane voltages). This means you're going to be looking at things like 2A3's if you want to keep to a 500v rail. Of the other two choices, I'd go IT any day and I'd say the AN EI core IT I have is better than cap coupled designs, I do not experience a lack of micro-details, etc... even though it isn't a top of the line IT. Cap is the last choice. Now a 4th choice here is "power drive" using a MOSFET follower. Check out TubeLab site for more on this.


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  • RE: Capacitor or transformer coupling? - SteveBrown 08:01:57 01/23/12 (0)

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