Klynstrom Sovereign Echomaster 7 Head Echo with Klynstrom Cover + Manual MINT Posted on November 1, 2023 by admin Very Rare – Klynstrom’Sovereign’Echomaster. With Klynstrom Waterproof Cover. With printed Klynstrom Instructions. Klynstrom Echo Master seven head tape echo. The Klynstrom Echomaster is a re-designed Watkins (WEM) IC-400 Vari -Speed.