Check the listing for details. Bose 301 Signal Processor Electronic Plug In Crossover Replacement. Condition: For parts or not working. Listed at 29.00 USD. I believe this is from an early 301. Please not the glass fuse. I pulled this from a working unit in my shop years ago and can not remember the exact model. Please compare with wat you have. The Bose 301 Signal Processor Electronic Plug In Crossover Replacement is a high-quality electronic component designed specifically for the Bose 301 model. As a processor, it is essential for controlling and regulating signal levels in a video production setup. With the trusted brand of Bose, customers can rely on this product to provide reliable and efficient performance for their electronic needs. Whether used for cameras, photo equipment, or other video editing tools, this product ensures a seamless and professional operation.