All Volt models feature DC coupled Monitor, Headphone and Line outputs (where applicable).
All inputs are AC coupled.
Note: Only the Volt 4, 476 and 476p feature additional Line Outputs.
| Interface | Monitor Outputs | Line Outputs | Headphone Outputs |
| Volt 1 | DC Coupled | N.A. | DC Coupled |
| Volt 2 | DC Coupled | N.A. | DC Coupled |
| Volt 4 | DC Coupled | DC Coupled | DC Coupled |
| Volt 176 | DC Coupled | N.A. | DC Coupled |
| Volt 276 | DC Coupled | N.A. | DC Coupled |
| Volt 476 | DC Coupled | DC Coupled | DC Coupled |
| Volt 476p | DC Coupled | DC Coupled | DC Coupled |