PreSonus DigiTUBE - Manual (Page 5)

3
OVERVIEW 1
Drive
The DigiTUBE is provided with a DRIVE potentiometer for controlling the amount
of signal routed through the 12AX7 vacuum tube. This feature lets you control
how much saturation of the signal occurs. Greater levels of tube saturation give
the signal greater warmth and a richer sound. This feature works equally well
on mics and instruments and is just what is needed to tame that ‘brittle’ sound
encountered with different types of digital media.
Internal Clock
An internal clock is provided for 44.1 kHz or 48 kHz operation selectable by way
of the switch on the back panel. An INTERNAL/EXTRERNAL selector and a BNC
connector for external clock input can be found on the back panel as well as the
S/PDIF connector for the DigiTUBE’s digital output.