The Vintage Preamp adds a carefully crafted analog tube preamp emulation, inspired by
Universal Audio’s all-tube 610 console preamplifier, to the sound. When the button is lit orange,
the circuit is active.
(5) Instrument Buttons (INST)
Press these buttons to toggle the impedance and gain of the line inputs to accommodate Hi-Z
instruments, such as electric guitar or bass. These buttons are lit green when the Hi-Z inputs are
enabled.
Tip: Generally speaking, the INST button should be off when connecting a line-level source
such as a keyboard or sound module, unless you need more gain.
(6) 48V Phantom Power Button
Press this button to toggle 48V phantom power at the XLR microphone inputs. The LED blinks
red while phantom power is activating or powering off. The LED is lit solid red when phantom
power is active. Both XLR inputs receive phantom power when enabled.
Phantom power is required by most condenser microphones, but is usually not required with
dynamic microphones or ribbon microphones (phantom power can damage some ribbon
microphones).
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