Now available from Allen Amplifiers are stainless-steel angled-front chassis’ with TIG welded corners and a 7/16″ rear mounting flange. 3 octal socket holes and 4 9-pin holes on models CHS and CHM. Five 9-pin holes on the CHL model. Eyelet boards, transformers and cabinets are available to go with these chassis. The new stainless-steel chassis are used on all current production Allen amps and are available separately for DIY builders. Credit: Allen Amplifiers.