For sale: Heritage Audio OST-6 v2.0. This is a chassis for the API 500 series. I purchased this new from Rock On (a music store) at the end of last year, and it was working without any problems until just now. I am selling it because I no longer need it due to a change in my equipment. All accessories are included, and the screws for all 6 slots are also included. The modules shown in the photos are not included. If you need one, please consider it. API500 Lunchbox 500 series 500 chassis