Mack Brass · Compensating (value)

Mack Brass EU1150S

Provenance under review. Reported as China, but the country of manufacture is not yet independently cited — the maker's page does not state one.

Build: stencil — an OEM stock design widely understood to be built by JinBao and sold under the Mack Brass name.

MACK Brass of Virginia LLC (US) direct-sale; JinBao-built per trade knowledge. Mack's OWN page states it is 'based on the Yamaha 642 compensating euphonium' (citable claim). Country not stated.

Specifications

ModelEU1150S
LineCompensating (value)
TierIntermediate
Price band$$
PitchBb
Valves4 — 3+1, compensating
CompensatingYes
Bore15–16.8 mm
Bell300 mm · yellow brass
Valves materialMonel pistons
Finishessilver plate
Optionsgold trim kit, large-shank receiver (standard)

Manufacturer's specification page ↗

Specs verified July 6, 2026.

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