The UltraSound Ultra PDI Preamp DI is a great direct box and a full-featured preamp. The Ultra PDI lets you dial in clear, natural sound. Routes to a stage PA from a balanced XLR output. A parallel 1/4" out sends signal to your stage amp. The effects loop features a 1/4" send and return rather than a TRS system requiring a Y cord. Tone controls include active bass and treble EQ, mid-dip shape control, and a notch filter. Operates on 48V phantom power or battery (not included).
UltraSound Ultra PDI Preamp DI Features:
EFX LOOP: This is a real world "EFX
LOOP". In an effort to save room, most of our competition uses a TRS jack
(tip, ring, sleeve) and Y cable type system. The DI+ is provided with two
1/4" jacks, one for "SEND" and one for "RETURN". Since the EFX LOOP interrupts
the signal path it can be used as an insert point for a volume pedal, compressor,
or tuner, if the tuner is equipped with a bypass switch. (Try that with
one of our competitors units)
SEND: The signal on the SEND jack is post-input gain and pre EQ. This means that you can use the SEND signal as an auxiliary unbalanced direct output. This signal is not affected by any of the panel controls with exception of the "INPUT GAIN" control.
RETURN: A plug inserted into the RETURN jack will interrupt the signal path. The signal on the tip of the plug inserted into the RETURN jack will be the signal that the DI Plus will process.
INPUT GAIN: The "INPUT GAIN" is not a volume control, rather this control sets the level of amplification applied to the input signal to boost it to a useable level. The reason this is adjustable is to accommodate a wide range of pickup devices.
BASS: This is an "Active" control. The BASS control adjusts the amount
of cut or boost in the low frequency (150HZ) range.
TREBLE: This is an "Active" control. The TREBLE control adjusts the amount of cut or boost in the high frequency (5kHZ) range.
NOTCH FILTER: ON/OFF - Enables or disables the NOTCH FILTER control.
FREQ. HZ - Sets the frequency (100-350HZ) of the 18db cut NOTCH FILTER that is used to control resonant feedback.
SHAPE: ON/OFF - This toggle switch enables or disables the SHAPE control. This control is a mid dip control. In the ON position, the mid frequencies will be cut and the high and low frequencies will be boosted.
PHASE: IN/OUT - Changes the polarity of the signal. Phase affects the way the guitar top is pressurized by the loudspeakers. When the signals are out of phase with each other, low-end feedback is minimized. If you experience “positive acoustic” feedback on stage, flip the phase switch from its current setting to see if this will kill the feedback. If inverting phase alone does not eliminate feedback, the notch filter can be used. Phase will also affect the way the guitar signal mixes live and when recording.
XLR LEVEL: This control adjusts the amount of signal sent to the XLR OUT jack.
LINE LEVEL: This control adjusts the amount of signal sent to the LINE OUT jack.