When I say underground I am talking about companies that fly below the radar. Not much talk about them on audio forums, little if no reviews, no formal advertising, rarely see their gear at shows.
Roger High Fidelity made in USA. all internal component are heavily over-spec (from resistors, wires to transformers) ,comes with lifetime warranty!. Even let you tour their factory if you buy their top products.
too bad I don't have deep pockets, and I also don't agree to the use of global feedback in their amplifiers..
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