GLORIFIER™ ACOUSTIC PREAMP DI
USER MANUAL
Thank you for choosing the AMUMU GLORIFIER™ acoustic preamp direct box. This preamp direct box is fully handcrafted with extremely
low noise, excellent clarity, and warm EQ. It is designed for all acoustic-electric instruments with various pickups, especially, for all the
AMUMU pickups.
* AMUMU BOUNTIFUL™ series
* AMUMU SP30, SP31, SP60
* AMUMU SBT10, SBT12
PS: We offer a special discount for all the AMUMU pickups if you’ve owned the GLORIFIER™ preamp, just contact us for more info.
MAIN FEATURES
* Handcrafted Preamp DI Box for various acoustic-electric guitars with piezo, magnetic, under-saddle and microphone pickups
* +/-20 dB Gain control with 3-band EQ, Super-Low Noise and Sparkling Acoustic Clarity
* Phase Switch to reduce feedback and also to generate a fuller and warmer tone
* Powered by either 9V DC adapter(center negative), 48V phantom power or the 9-volt battery
* Convert high impedance unbalanced signal from the acoustic-electric instrument to low impedance balanced signal for the mixer, PA
system, recording audio interface and microphone preamp. ( 1/4” Unbalanced Input to XLR Balanced DI Output plus a 1/4” Unbalanced
Output )
POWER REQUIREMENTS
The AMUMU GLORIFIER™ Preamp DI can be powered by any of the following 3 methods.
* Any standard 9V DC center negative power supply/adapter using a standard 2.1mm center pin and 5.5mm outside barrel (not included)
* 12V - 48V Phantom Power through D.I. output (XLR cable needed, Mixer/Audio Interface with built-in 48V phantom power needed)
* A PP3-size 9-volt battery (Alkaline 6LR61, not included)
* Unscrew the bottom cover to install the battery
* The battery will not be drained or charged when used with phantom power or DC adapter
* Unplug the input cable when not using to power off the unit
INPUT
* INPUT (MONO PLUG): 1/4” Line In with mono plug from the acoustic-electric instruments ( Guitar, Bass, Ukulele, Cajon, Banjo, etc)
OUTPUTS
* OUTPUT (UNBALANCED): 1/4” Line Out with mono plug
* D.I. OUTPUT (BALANCED): XLR DI output to low-impedance devices like mixer, microphone preamp, PA system and recording consoles.
PS: The DI XLR output and the line output can be used simultaneously. Either you can use the 1/4" line out as a monitor for connecting to
a tuner or as an output for connecting the guitar(instrument) amplifier while using the DI output with a mixer or PA system.
CONTROLS
* GAIN: Controls the Input Sensitivity from the instruments and sets the amount of pre-amplification before the signal enters the EQ
section.
* VOLUME: Located at the OUTPUT (the very end of the circuit) and simply allows you to adjust the volume.
* BASS: Controls the amount of bass in your signal. Left is less, right is more
* MID: Controls the amount of mid frequencies in your signal. Left is less, right is more.
* TREBLE: Controls the amount of treble in your signal. Left is less, right is more.
LEDS
* 48V: This LED will light on when used with phantom power only.
* ON: This LED will light on while using with any of the 3 power methods but only when the INPUT jack is plugged with a mono cable.
SPECIFICATIONS
* Input Impedance : 1 Megohm (MΩ)
* D.I. Balanced Output Impedance (XLR): 100 Ohm (Ω)
* 1/4” Unbalanced Output Impedance: 100 Ohm (Ω)
* Frequency Response: 30Hz - 30kHz
* GAIN: +/-20 dB
* Expected Battery(Alkaline) life under continuous use: ~20-25 hours (depending on the actual conditions of use)
PRECAUTIONS WHEN CONNECTING
* To prevent malfunction and equipment failure, always turn down the VOLUME and turn off the power of your amplifier and other devices
before making any connections.
* Once the connections have been completed, turn on the power to your various devices in the following order, otherwise, you risk
causing malfunction and/or damage to speakers and other devices.
* When powering up: Turn on the power of the amplifier last.
* When powering down: Turn off the power of the amplifier first.
* Tone Controls:
* BASS: +/- 20 dB @ 100Hz
* MID: +/- 20 dB @ 1.5kHz
* TREBLE: +/- 20 dB @ 10kHz
* Current Draw: 15mA average
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