dbx:
| Model | Date | Group | Description |
|---|---|---|---|
| 140 | 01 May 1991 | Converter | Type II Noise Reduction |
| 1531P | 01 May 1991 | Equalizer | Graphic Equalizer |
| 1531PM | 01 May 1991 | Equalizer | Graphic Equalizer |
| 1531X | 01 May 1991 | Equalizer | Graphic Equalizer |
| 160 | 01 January 1991 | Compressor Limiter Leveler | Compressor Limiter |
| 160X | 01 January 1993 | Compressor Limiter Leveler | Single Channel Compressor Limiter |
| 160XT | 01 January 1993 | Compressor Limiter Leveler | Single Channel Compressor Limiter |
| 161 | 01 January 1991 | Compressor Limiter Leveler | Compressor Limiter |
| 162 | 01 May 1991 | Compressor Limiter Leveler | Compressor Limiter |
| 163 | Compressor Limiter Leveler | ||
| 163X | 01 January 1993 | Compressor Limiter Leveler | OverEasy Compressor Limiter |
| 164 | Compressor Limiter Leveler | ||
| 165 | 23 May 1991 | Compressor Limiter Leveler | |
| 165A | 11 October 1990 | Compressor Limiter Leveler | Compressor Limiter |
| 166 | 01 January 1993 | Compressor Limiter Leveler | Two Channel Gated Compressor Limiter |
| 166A | 19 October 1999 | Compressor Limiter Leveler | Dual Compressor Expander |
| 168A | 01 January 1995 | Compressor Limiter Leveler | Studio Dynamics Processor |
| 263X | 01 May 1991 | Converter | De-Esser |
