The lambda series “λ” is the result of a 2 year project between Toby Oft and Christan Griego. Each model of the λ series has been tried and rigorously tested in the full range of solo and orchestral repertoire at the highest level. The priority of the λ series is to maintain a rich full sound in all tessitura that particularly soars in the upper register with easy, and especially clear articulation at all dynamic levels.

The λ 4 is slightly larger in diameter than the λ 4.5 and offers similar distinctive sound qualities and easy access to the extremes of upper and low registers. Because it is slightly larger than the λ 4.5 it does tend to blend more into the low brass ensemble texture.