Bruno Tilz 213- S 2 vs Kelly 5G-EU-SS
The Kelly 5G-EU-SS has a wider cup diameter, the Kelly 5G-EU-SS features a deeper cup.
Cup Diameter
The Kelly 5G-EU-SS has a cup diameter of 25.40 mm / 1.0000 in compared to 23.00 mm / 0.9055 in on the Bruno Tilz 213- S 2 — a difference of 2.40 mm / 0.0945 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Kelly 5G-EU-SS has a — cup while the Bruno Tilz 213- S 2 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Bruno Tilz 213- S 2 is described as unspecified, and the Kelly 5G-EU-SS as 316 Surgical Stainless Steel. Material affects mass, warmth, and how quickly the piece responds.
Which is better?
The Bruno Tilz 213- S 2 is designed for catalog playing, while the Kelly 5G-EU-SS targets general use. Your best choice depends on your musical context.