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The Alpha·Omega 900™ is a 900W amplifier equipped 

with an all-analog preamplifier, Class D Power Module 

and a digital impulse based cabinet emulator for DI 

outputs or headphones.  Probably the first thing you 

will notice from the Alpha·Omega 900 is its unusual 

control layout: On the right side you’ll find the clean 

section which is the foundation of your sound. 

It features Gain and Master volumes and active 6 band 

graphic EQ. Along with the mandatory Low and Treble 

controls you will find 250Hz, 500Hz, 1.5KHz, 3KHz 

sliders. Character is all in the midrange. Having 4 

dedicated Mid controls allows you to cover the whole 

mid range (250Hz to 3kHz) to have total control and 

flexibility over the amplifier’s character. 

 

On the left side, by the input jack you will find the 

Alpha·Omega Engine which acts as an extra channel. 

This creation differs greatly from our previous 

preamplifiers and overdrives: its operational-amplifier 

topology featuring two distinct distortion circuits 

(Alpha and Omega), which can be selected or blended

using our Mod knob, make the Alpha · Omega the most 

flexible among our designs. 

 

 

DESCRIPTION

The Alpha·Omega Engine™ can be engaged via the 

front panel or via our own digitally controlled ™ (jack 

on rear panel). Besides engaging the Alpha·Omega 

circuitry you can hold the actuator to Mute the 

amplifier. 

The Intelligent Footswitch is housed in an elegant, 

laser-engraved unibody chassis and requires a 

standard ¼” mono cable (not included) for it’s full 

operation.

Besides this incredibly versatile preamplifier, we 

equipped the power module with some unique control 

over the power output and minimum speaker loads:

The standard mode will deliver 900W RMS at 4

Ω

/500W 

at 8

Ω

. If you select the 2

Ω

 Mode via the rear-panel 

switch the amplifier will deliver 900W at 2

Ω

/500W at 4

Ω

 

and 350W at 8

Ω

.

This deceivingly simple feature allows for maximum 

power adaptability: Regardless of the cabinet 

configuration or power requirements, the Alpha· Omega 

900 will deliver accordingly.

 

Summary of Contents for Alpha-Omega 900

Page 1: ...OWNER S MANUAL ...

Page 2: ...ne in any way necessary as well as providing a wide variety crystal clear clean sounds But that is not everything the MIDI programmability and impulse response cabinet simulation with up to three different storable virtual cabinets make the AO900 not only one of the most complete amplifiers for the touring musician but combined with the auxiliary input and headphone output the ideal tool for silen...

Page 3: ...rdrives its operational amplifier topology featuring two distinct distortion circuits Alpha and Omega which can be selected or blended using our Mod knob make the Alpha Omega the most flexible among our designs DESCRIPTION The Alpha Omega Engine can be engaged via the front panel or via our own digitally controlled jack on rear panel Besides engaging the Alpha Omega circuitry you can hold the actu...

Page 4: ...ono cable PASSIVE ACTIVE Use this push button switch to change from passive to active mode If your bass is active it can have a hotter signal making the amp to distort early feel free to use if such additional distortion is desired DISTORTION Use this push button to turn on or off the ...

Page 5: ...e from a soft warm overdrive to a massive and modern distortion sound LEVEL Use this knob to control Alpha Omega Engine s output volume BLEND Use this knob to mix between the Clean signal and the DIstortion signal Alpha Omega Engine MOD Selects or mixes between the two distinct distortion circuits Alpha is punchy tight with a lot of definition whereas Omega is simply brutal and raw GAIN Use this k...

Page 6: ...FEATURES REAR PANEL ...

Page 7: ...und of the DI XLR outputs If you are experiencing ground noise in your DI signal try changing the setting of this control PRE DI OUTPUT Use this connector to send a balanced copy of your clean signal to the console mic preamp interface etc POST DI OUTPUT Use this connector to connect the Alpha Omegavv 900 preamplifier to balanced equipment mic preamp console recorder compressor audio interface etc...

Page 8: ... operational with the Intelligent Footswitch plugged in You can use a regular mono instrument cable to connect the amplifier to the footswitch You must remove the cable from the footswitch jack in the rear panel if you want to control the amp from the front panel FAN The fan forces air inside the amp to help the heatsink system cool the amp The fan will speed up when the temperature rise to help c...

Page 9: ...MOD CLEAN ALPHA OMEGA LEVEL IN PASSIVE ACTIVE BASS TREBLE GRAPHIC EQ GROWL POWER MUTE PRE OUT POWER IN CLEAN DI POST DI SPEAKER OUTPUTS HEADPHONE AMPLIFIER AUX INPUT BITE BLEND COMPRESSOR GAIN DIGITAL BOARD ALPHA OMEGA 2Ω ...

Page 10: ...00 is under warranty to the original owner for a period of three years against manufacturing defects in the country where the product was originally purchased If you experience a problem with the unit please contact support darkglass com to receive a Return Authorization number or for information on the nearest authorized repair center A copy of your original receipt must be included with all warr...

Page 11: ... the vent holes The Fan and vent holes are part of the cooling system of the amp Covering the vent holes can damage the power amp by overheating it Don t use an instrument cable as speaker cable An instrument cable is not designed to deliver the type of power signals sent from the amplifier to the speaker TROUBLESHOOTING The button controls do not react check if the footswitch is connected If you ...

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