| Feature | DB90-RX | DB91-RX | DB9000-RX | DB9009-RX |
| Excellent Audio Performances | YES | YES | YES | YES |
| High Quality HE-AAC (v.1 and v.2) and MPEG-1 Layer 3 Codecs | YES | YES | YES | YES |
| 32 kHz, 44.1 and 48 kHz sample rates support | YES | YES | YES | YES |
| Support of all standard bitrates and VBR as well | YES | YES | YES | YES |
| SHOUTcast / Icecast compatible TCP/IP stream client | YES | YES | YES | YES |
| RTP Audio compatible | YES | YES | YES | YES |
| Auto switching to another source in the event of a connection or audio loss | YES | YES | YES | YES |
| LEDs and Phones output for quick diagnostics | YES | YES | YES | YES |
| IP address pronunciation at startup (through the headphones) | YES | YES | YES | YES |
| Full Control and easy setup with any web browser | YES | YES | YES | YES |
| UPnP for easy discovery in Local Networks | YES | YES | YES | YES |
| Configuration and Monitoring via SNMP Ver.2C | YES | YES | YES | YES |
| Built-in Backup Audio Player with SD Card | NO | YES | YES | YES |
| Front panel audio level bar graphs | NO | YES | NO | NO |
| RTP Receiver with Multicast support | NO | YES | NO | YES |
| RTP Receiver with PCM | NO | YES | NO | YES |
| Dayparting automation support | NO | YES | NO | YES |
| Balanced audio outputs | NO | NO | YES | YES |
| Ethernet to RS-232 redirector | NO | NO | YES | YES |
| Easy to read OLED Graphical Display | NO | NO | NO | YES |
| Intuitive Navigation Menu | NO | NO | NO | YES |
| 3 General Purpose Outputs | NO | NO | NO | YES |
| Stereo and RDS Encoder Module | DB90-RX | DB91-RX | DB9000-RX | DB9009-RX |
| Built-in Stereo MPX Generator and RDS Encoder | NO | NO | YES | YES |
| Built-in MPX Limiter | NO | NO | YES | YES |
| Digital stereo encoder with pre-emphasis, AGC and equalizer | NO | NO | YES | YES |
| Fully Dynamic RDS encoder | NO | NO | YES | YES |
| Adjustable Pilot, L-R, RDS phases | NO | NO | YES | YES |
| Selectable pre-emphasis 0, 50µs, 75µs | NO | NO | YES | YES |
| Digitally adjustable Pilot & RDS injection levels | NO | NO | YES | YES |
| Fully Digital Synthesis of the RDS Signal | NO | NO | YES | YES |
| Fully Digital 32 bits DSP Stereo Encoder | NO | NO | NO | YES |
| 1x MPX and 1x RDS/PILOT Output | NO | NO | NO | YES |
