I’ve had significant improvements with Oyaide power cords on both Inspire and Cary tube preamps/amps. The price range of the cords is in the $300 to $800 range. Seems like Oyaide 004 ends go well. Add an Oyaide Black Mamba to the preamp and the focus and soundstage will become more clear and depth will open up. On the amp an Airsine with 004 ends will crank up the resolution and hugely increase the slam. You won’t hear much of this though if you’re using contractor grade outlet. Here Oyaide comes through again. For a warm lush sound the SWO-GX outlet works good. Use the R-1 outlet mor a more neutral sound. Currently the preamp plugs into GX and the amp into the R1. These upgrades are well worth it IMO.
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