| Form Factor | Desktop |
| Signal Path | Analog Hardware |
| Links | Data Sheet · Manual |
| Notes | The TTM 54i got better transform switches and a Lexan faceplate. 200 |
| Form Factor | Desktop |
| Signal Path | Analog Hardware |
| Links | Data Sheet · Manual |
| Notes | The TTM 54i got better transform switches and a Lexan faceplate. 200 |