Bruno Tilz 200-11 vs Schilke 13A4a
The Schilke 13A4a has a wider cup diameter, the Schilke 13A4a has a larger throat opening.
Cup Diameter
The Schilke 13A4a has a cup diameter of 16.76 mm / 0.6598 in compared to 16.50 mm / 0.6496 in on the Bruno Tilz 200-11 — a difference of 0.26 mm / 0.0102 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Schilke 13A4a has a wider throat (3.66 mm / 0.1441 in vs 3.00 mm / 0.1181 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.