His fingering technique involved plucking strings very forcefully to produce a trebly, twangy sound. Ideal triangles are also sometimes called "triply asymptotic triangles" or "trebly asymptotic triangles". Norwegian-inspired black metal guitarists usually favor high-pitched or trebly guitar tones and heavy distortion. Their sound also included what has been described as a "frantic trebly bass". The capacitor filtered out lower frequencies resulting in a more trebly output.