View Larger Image Matrix M-Stage Headphone Amp with Burson V5 Opamp Mod Works great sounds good. By Sales Burson|2017-02-14T11:27:06+11:00February 14th, 2017|V5 SS Opamp|Comments Off on Matrix M-Stage Headphone Amp with Burson V5 Opamp Mod Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail