End Amen was a side project formed by the two Germans Owe Osterlehner of Deathrow and Siggi Blasey. During a Deathrow / Psychotic Waltz tour in Europe in 1991 they played some rehearsal tapes to Dan Rock and Norm Leggio who decided to help them out with their project. They released one album which was apparently in similar style to the Deathrow sound.
Source: http://www.metalprovider.com/tartareandesire/bands/endamen.html