Digitech Studio:
| Model | Date | Group | Description |
|---|---|---|---|
| Quad 4 | 01 January 1998 | Effect Processor | Multi Effect Processor |
| S200 | 01 January 1998 | Effect Processor | Dual-Engine Multi-Effects Processor |
| Model | Date | Group | Description |
|---|---|---|---|
| Quad 4 | 01 January 1998 | Effect Processor | Multi Effect Processor |
| S200 | 01 January 1998 | Effect Processor | Dual-Engine Multi-Effects Processor |
