The Alpha·Omega 900 takes the best elements of our most successful distortion preamplifier ever, combined with state of the art features to make a monstrous 900-watt amplifier with earth-shattering tone. While Darkglass' signature Alpha and Omega drive engines add incredible girth and size to the overdriven signal, the studio-grade VCA compressor adds an extra layer of control, and the ultra-quiet 6-band graphic equalizer can help sculpt the tone from aggressive and overdriven to crystal clear clean, whatever your needs may be.
That's not everything though, 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 silent practicing.
The Alpha Omega 900 amplifies the best qualities of one of the most powerful and distinct Darkglass products ever made.
Front Panel Features
Input: Use this jack to connect your instrument via a standard ¼” mono cable.
Active/Passive: 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 Alpha·Omega Engine™ to add natural compression, organic harmonic enhancement, and saturation ranging from mild overdrive to high gain bass rage.The Alpha·Omega Engine operates before the clean section (you can therefore use the 6-Band Active EQ for additional tone shaping).
Bite: Boosts high mids (2.8kHz) for additional presence and definition.
Growl: Shelving Bass Boost for a fatter tone and increased low end saturation.
Compression: This knob controls the amount of dynamic compression added to the Alpha·Omega Engine. The make up gain is adjusted automatically. The compression can be turned off or assigned using the Darkglass Suite.
Drive: This knob controls the amount of distortion that the Alpha·Omega Engine will deliver. It will change 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 knob to change the volume of the signal before the Active 6 Band EQ. You can set it low for ensuring the cleanest operation possible or set it higher for a more aggressive growl.
Bass: +-12dB at 80Hz. Use this knob to change the low-end content of the signal.
Mids: +-12dB at 250, 500, 1.5K and 3Khz. This graphic EQ control the mid content of the signal.
Treble: +-12dB at 5kHz. Use this knob to change the high content of the signal.
Master: Use this knob to control the overall volume of the amplifier.
Mute: Use this push button to mute the amplifier.
Back Panel Features
Speaker Output: Use this connector to connect the amplifier to your cabinet. This Speakon combo jack allows for either Speakon or ¼” speaker cable operation. The outputs are connected in parallel.
Min-Load: Press this switch when using a 2Ω load. You can use this control to lower the output if your 4Ω cabinet is not able handle more than 500W (you can also get 350W with an 8Ω cabinet in this configuration).
Send: Use this output to send the signal to effects pedals.
Return: Use this input to receive the signal from effects pedals. Master volume control is after this input.
Ground Lift: Use this control to lift the ground 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 output to send a balanced copy of your input signal to recording equipment, mixer etc. The output is latency compensated to match with the Post DI Output
Post DI Output: The signal for this output is taken after the distortion, EQ and effects loop, and processed through the cabinet simulation engine. The output is latency compensated with the Pre DI Output, and not affected by the master volume.
USB: The USB connector allows you to use the Darkglass Suite to load different cabinet impulses or change different parameters on your amp (midi, compressor, etc.).
Headphone Output: Connect your Headphones and enjoy the impulse response cabinet emulation.
Headphone Volume: Controls the volume of the headphone output.
Aux In: Use this connector to provide to the Headphone output music from your laptop, cellphone, mp3 player, etc.
Cabinet Select: Switches between 3 different cabinet impulses and bypass this section for a rawer sound. Hold this button enter MIDI Learn mode to choose the MIDI channel.
MIDI: The MIDI input allows you to change channels, toggle the mute and compressor, and select the cabinet simulation slot with any standard MIDI device. Both Program Change and Control Change commands can be used.
AC Socket: Use this connector to feed electric power to the amp.
AC Power ON/OFF: Use this Switch to release the audio energy from your bass.
We want you to feel confident with your Prymaxe purchase, which is why when you purchase a new product from us, you are automatically enrolled into our FREE Two Year Warranty.*
What is covered:
What is NOT covered:
* We reserve the right to end this promotion at any time.
All in stock orders placed before 1pm EST will ship same day and all orders placed after the cutoff will ship the next business day*. If you need an order immediately, please let us know and we’ll try our best to accommodate your request.
Most orders shipping within the US will ship via USPS or FedEx and are fully insured, we also offer express options if you need an item within 24 hours. All tracking numbers will be sent via email after the item is shipped. If you did not receive your tracking number please feel free to call or email us.
All US Orders $49+ Ship for FREE
We love and truly appreciate all of our International customers. All of our international shipments are fully insured and are guaranteed to be delivered or your money back. We offer a variety of shipping options for you to choose from and if for any reason there is an issue with your order we will make it right, that is our promise you.
Pre-Orders typically ship with 2 weeks. In the event a product is backordered we will contact you with an exact shipping timeframe.
Smaller items will ship USPS First Class.
USA shipping only for Barber Electronics, Boss, Darkglass, Dunlop, DryBell, EarthQuaker Devices, Eventide, EVH, Fender, Gretsch, Korg, Marshall, Music Man, MXR, PreSonus, Quilter, Roland, Schecter, Shure, Source Audio, Way Huge, Tech 21, Vertex, Voodoo Lab, Vox, Wampler.
What if my package gets stolen?
Please note: We are a small, family owned business. While we want to make sure you are satisfied with your purchase, we would like to try to limit the amount of returns as much as possible. This helps both us and the customer save time and money. If you are unsure about a product, please contact us before you complete the purchase, and we'll do our best to find the item that will best suit your needs. Prymaxe reserves the right to define abuse of the return policy on a case by case basis and consequently refuse subsequent return requests by said abuser and place them "All Sales Final".
Last Updated: March 27, 2018
If you are not 100% satisfied with your purchase, you can return it within 45 days of the original purchase date for a store credit refund, or within 14 days of the original purchase date for a refund to the original purchase method (PayPal, credit card, etc). If an item is not received by us within the 45-day window, the package will be refused. All new items returned must be in BRAND NEW condition with zero signs of wear or use and must be returned in the original packaging with ALL materials (free/bundled items -- must be unused/unopened, warranty cards, plastic, pouches, manuals etc.). We reserve the right to charge an up to 15% restocking fee on any opened guitars, amps, or keys being returned.
Our 45-Day Satisfaction Guarantee covers brand new products only -- it does not cover used and clearance products (see below). It also does not cover items in the “What is NOT Returnable” list below. Please note: All actual shipping fees paid by Prymaxe will be deducted from your refund. This includes orders that qualified for free or subsidized shipping. Return shipping must be paid by the buyer. If you received a defective or incorrect item, please see our FAQ section below.
All Used and Vintage items come with a 48 hour approval period. Please contact us directly at firstname.lastname@example.org within 48 hours of receiving your product for us to set up a manual return for you. Be sure to include your order number and reason for return in the email. All Used/Vintage items must be returned in the same condition they were sent to you in, as well as include all materials that came with it.
All returns should be insured by the buyer and sent via UPS, Fedex, or USPS with tracking. Please do not write on or attach tape or labels to the product box (these will be refused) -- use a packing box to return the product. Attach a shipping label with the RMA number onto the shipping box. Packages without a valid RMA number on the outside of the box will be refused.
To request an RMA number, please call us at 1-(855)-PRYMAXE (779-6293) (International Customers, please use 1-(908)-272-2990) during our normal business hours (Monday - Friday, 10 AM - 6 PM Eastern, excluding federal holidays).
When will I get my refund?
Once your return is received by us, your refund will typically be processed within 10-15 business days. It typically takes a few business days for all credit card refunds to be processed and reflected on your statement. This means it will take a few extra days for your refund to show in your account after your return is processed. Store credit refunds will be given in the form of a e-gift card which will be available for immediate use after it is emailed to you. Please note: All actual shipping fees paid by Prymaxe will be deducted from your refund. This includes orders that qualified for free or subsidized shipping. Return shipping must be paid by the buyer. If you received a defective or incorrect item, please see the next question.
What if I receive a defective or incorrect item?
If a product is defective upon arrival, or the wrong item was received, all the shipping fees will be covered by us and we will give you a store-credit refund on the original order. For defective items, Prymaxe reserves the right to refuse the return if we determine the reason for the unit failing was not covered under the warranty (i.e., if the item was damaged due to user fault or error). If you feel your item was damaged in shipping, please take plenty of pictures of the damaged box and item and immediately contact us so we can open a claim with the shipping company.
Please be very diligent with testing your defective item. Be sure to try other guitars, power supplies, cables, and amps. We also request that you take a video of the item not working. If we receive your item, test it, and find it to be working, we will give you a refund minus the cost of shipping both ways.
When must I ship my return?
Your return must be received by us within 45 days of the original purchase date for store credit, or postmarked by 14 days for a refund to the original purchase method (PayPal, credit card, etc). This means you must ship your return with enough time for us to receive the package within the deadline. If it does not arrive within 45 days, we will refuse the package. If you feel you sent the package within a reasonable time frame, but it arrived late due to the shipping company’s error, please immediately contact us to make an appeal before we refuse the package.
What if I pre-ordered an item?
If a pre-ordered item arrives outside of the 45 day window from when you ordered it, you will have 7 days from the arrival date to send it back for store credit.
Why was my package refused?
There are a number of reasons your package could be refused by us, including: