DSP Accessories This category includes some optionally available products to be used additionally at the installation of digital signal processors or DSP amplifiers. DSP Accessories GZDSP BTB-APP Interface for wireless music streaming and app control Read more GZDSP BT-BOX Interface for wireless music streaming Read more GZDSP PRO-REMOTE Remote control for GZDSP products Read more GZDSP BT-STICK USB interface for wireless music streaming Read more