TOP PANEL (CONTROLS & FEATURES)
INPUT JACK
This jack (located on the right side of the chassis) is the PICKUP INPUT that feeds the first stage monolithic J-FET
buffer amp of the ROSETTE™ DI-PREAMP. The input sensitivity of this input buffer amp is compatible with all common pickup levels
and impedances (input impedance is approx. 1M ohms). When a 1⁄4” (6.3mm) plug is inserted into the jack, the power is automatically
turned on, but please note that it is important for the 1⁄4” (6.3mm) plug to be of the TIP-SLEEVE type as TIP-RING-SLEEVE types
may not engage the power-on circuit properly. It is always good practice (and customary) to inform the FOH/monitor engineer that
you will be turning your DI on or off so as to prevent any pops or unexpected signal into their system(s).
TUNER OUTPUT JACK
This jack (located on the left side of the chassis) is the TUNER OUTPUT. This signal is fully
buffered and is not muted when the mute footswitch is engaged to allow for “silent” tuning without sending signal to the PA,
stage speakers or recording devices.
MUTE FOOTSWITCH
This footswitch mutes the audio signal being sent to the DIRECT OUTPUT, FX SEND and PREAMP
OUTPUT for silent tuning with a tuner connected to the TUNER OUTPUT jack, or just to mute a guitar at any time. There is a red
LED indicator that illuminates when the DI-PREAMP is in MUTE mode.
POWER LED
This blue LED indicates that the DI-PREAMP is connected to a power source and is switched on, operating correctly.
BOOST FOOTSWITCH
This footswitch engages the boost (or solo) function. The amount of boost is set by using the BOOST
control on the top of the DI-PREAMP. There is a green LED indicator that illuminates when the DI-PREAMP is in BOOST mode.
INPUT (GAIN)
This control determines the INPUT GAIN of the first gain stage in the Rosette DI Pre and, ultimately, sets the
level at which the following electronics stages operate. There is considerable headroom built into this stage to accommodate most
reasonable gain structures, though it is possible to overdrive the INPUT with some pickups by using extreme settings and/or an ag-
gressive playing style. If this occurs, increase the MASTER volume control and decrease the INPUT control.
PHASE SWITCH
This switch sets the PHASE (or polarity) of the Rosette DI Pre to all outputs except the tuner output. Depending
on how your instrument’s pick-up/microphone is wired, it can be either in PHASE or out of PHASE (there is no way to tell by looking
at it). Under some conditions, if the signal from your instrument and the signal from the speaker are of the same polarity, feedback
can become an issue. Set this switch to the position that produces the minimum tendency for feedback before attempting to use the
HI-PASS, NOTCH FILTER or EQ for feedback issues.
PAGE 2
INPUT
OUT
IN
PHASE
BOOST
MUTE BOOST
BASS TREBLE PREAMP
OUT LEVEL
LOW HIGHNOTCH
TUNER
OUTPUT
PICKUP
INPUT
HI-PASS
ACOUSTIC DI-PREAMP
500
HZ
40
HZ
200
HZ
40
HZ
1.8
KHZ
150
HZ
5.0
KHZ
300
HZ
MID GAIN
FILTERS
MID FREQ
LEVELS
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