Michael Rath
Key in F
changeable Eb or D and C or Cb or B

Zigmant Kanstul
Key in F/C/Db/A
Kanstul CR valve

Lätzsch SL 620
Key in F/Eb/Bb
with D - tuning slide
Model “Poppe”

Lätzsch SL 600
Key in F/Eb/Bb
with D - tuning slide

Thein
Key in F/Eb/Bb
with D - tuning slide
traditional valve

Thein “van Dijk”
Key in F/Eb/Bb
with D - tuning slide
Hagmann valve

Haag
Key in F/C/A
Franz Monschau
Thayer, Hagmann, Lätzsch Valve

Kromat
Key in F/Eb/Bb
with D - tuning slide

also with
Thayer-Axial-Valves

Finke
Kontrabass in F/Eb/Bb
Hagmann Ventile

Jürgen Voigt
Kontrabass in F
traditional valve
or “Hagmann”

Kühnl and Hoyer
Key in F/Eb/Bb
with D - tuning slide
traditional valve

 

Helmut Voigt
Key in F/Eb/Bb
with D - tuning slide
traditional valve
open or traditional wrap