Mack Brass on Euphonium Studiohttps://euphonium.studio/maker/mack-brass/Recent content in Mack Brass on Euphonium StudioHugoen-usMack Brass EU1150Shttps://euphonium.studio/instruments/mack-brass-eu1150s/Mon, 01 Jan 0001 00:00:00 +0000https://euphonium.studio/instruments/mack-brass-eu1150s/<!-- EDITOR: verdict in your own voice. The database's clearest "stencil = clone" case: Mack's own page says it's "based on the Yamaha 642," the specs match the 642 exactly (.590-.661 bore, 11.8"/300mm bell, 4-valve comp Monel), and it sells for $1,595 vs the real 642's ~$5k. Silver only, gold-trim option, case + mouthpiece, large shank. "8000 sold, #1 US retailer of this model." Report the 642 lineage as MACK'S claim. Prime cross-link to the stencil explainer (this IS the explainer's thesis) and an honest side-by-side with the Yamaha YEP-642 Neo record. -->Mack Brass EU5500https://euphonium.studio/instruments/mack-brass-eu5500/Mon, 01 Jan 0001 00:00:00 +0000https://euphonium.studio/instruments/mack-brass-eu5500/<!-- EDITOR: Mack's OTHER compensating euphonium (distinct from the 642-based EU1150S). Confirmed only as "compensating" from the catalog; bore/bell/spec and any design lineage pending its product page (URL above). Fetch to complete. -->