Is an external mixing board required to supplement the onboard mixer?

No. For most applications of solo recording, the onboard mixing capabilities of the Solo are ideal. In fact, that's precisely what it was designed for.

Other Popular Articles:
• How is the final mix recorded? Is a two-track recorder required?
• Can Solo be used as a stand-alone A/D converter?
• Can I use all the inputs at once?
• Are the A/D and D/A converters in the Solo external, or are they on the PCI card inside the computer?
• Does the Solo have dithering functions on the digital out or just 24 bit resolution?