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Darkglass Microtubes X Ultra Bass Preamp Pedal

Bass Preamp Pedal, with Variable Lowpass/Highpass Filters, 6-band Graphic EQ, Drive, Mix, and Mid Controls, Built-in IR Cab Simulation, and XLR DI Output
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Item ID: XUltra
Darkglass Microtubes X Ultra Bass Preamp Pedal
Price:$499 and 99 cents
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Darkglass Microtubes X Ultra Bass Preamp Pedal
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Incredible Tone-shaping Potential for Your Bass

Delivering rich harmonic intensity you can focus on any part of your tonal spectrum, the Darkglass Microtubes X Ultra Bass Preamp Pedal offers big creative potential. You’ll be able to compress and overdrive your lows and highs independently, allowing you to craft the perfect combination of low-end punch and impact with high-end bite and clarity. Variable controls allow you to choose how your lows and highs are split, while a six-band graphic EQ gives you ample tone-shaping capability. Complete with a direct output plus an award-winning impulse response cabinet simulation, the Darkglass Microtubes X Ultra equips you with much more than overdrive.

Shape your tone with two variable filters

Before driving your tone, the Darkglass Microtubes X Ultra Bass Preamp Pedal splits your signal with two filters. A variable lowpass filter lets you choose how much of your signal remains clean and punchy, while a highpass filter determines how much of your tone will be sent through the drive circuit. Individual level controls for each signal path allow you to balance each to your liking.

6-band graphic EQ holds your bass in the mix

Bassists at Sweetwater that play a lot of different styles appreciate the flexibility of the 4-band graphic EQ on the Darkglass Microtubes X Ultra pedal. Regardless of how many guitars, keyboards, and vocalists you’re working with, you have the ability to dial in just the right midrange character to sit well in the mix. You have high- and low-shelving bands, plus sliders for 250Hz, 500Hz, 1.5kHz, and 3kHz. A master level slider allows you to compensate for extreme boosts or cuts.

Built-in cabinet simulation

To make the Microtubes X Ultra pedal a complete tone solution for bassists, Darkglass equips it with their award-winning impulse response cabinet simulation. Selectable via a button next to the XLR direct output, you’ll be able to send the sound of a miked cabinet directly out to a PA system or recording device.

Darkglass Microtubes X Ultra Bass Preamp Pedal Features:

  • Bass preamp/overdrive pedal
  • Direct output and parallel output for flexible routing options
  • Splits your signal to 2 variable filters for tone shaping
  • Lowpass-filtered signal remains clean for maximum punch and fundamental impact
  • Highpass-filtered signal goes to the drive circuit for adding harmonic saturation
  • Variable frequency controls allow you to choose where your signal is split
  • Level controls for high and low filters allow you to create your ideal sonic combination
  • 6-band graphic EQ with high- and low-shelving bands, 250Hz, 500Hz band, 1.5kHz band, 3kHz band, and master level control
  • Aux input allows you to plug in a music player for practice sessions

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Tech Specs

  • Pedal Type: Bass Preamp, Overdrive
  • Inputs: 1 x 1/4" (instrument), 1 x 1/8" (aux in)
  • Outputs: 1 x 1/4" (out), 1 x XLR (balanced out), 1 x 1/8" (headphones)
  • USB: 1 x Micro-B
  • Power Source: 9V DC power supply (sold separately)
  • Power Usage: 200mA
  • Height: 2.24"
  • Width: 4.92"
  • Depth: 3.77"
  • Weight: 0.94 lbs.
  • Manufacturer Part Number: MXU

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Reviews

Hand down best pedal for bass
I own nothing but Darkglass gear, and for good reason, it's the best out there. This pedal is no exception. The low-pass/hi-pass feature is genius and allows you to get studio quality bass tones and control live, ir in your DAW with one input. Highly recommend.
Music background: Death metal bassist
Awesome
It sounds like I restrung my bass with suspension bridge cables. Tons of tone shaping options and once you dial the pedal in you can go even farther with the darkglass suite. I will probably be buying more darkglass products in the future.
Music background: Bass player for 10+ years
Extraordinarily powerful and Flexible.
Between the B7K Ultra, the Alpha Omega, and the Microtubes X Ultra I like the Microtubes X Ultra the most. It's a little less intuitive than the B7K, and while the B7K is an amazing pedal you can't go wrong with, I think the Microtubes X Ultra ultimately has more tone shaping tools that also allows it to sort of thread the needle between the Vintage Microtubes and the B7K Ultra and give you the best of both worlds.

What really sets this pedal apart is the combination of the low compression, the low pass filter and the high pass filter.

The low compression allows you to control the amount of low end, allowing you to ensure that no matter how distorted you are you always have a tight foundation of low end.

The low pass and high pass are a little confusing but work in tandem with each other for dialing in the perfect kind of distortion / overdrive.

The high pass determines what frequencies are going to be distorted. It'll distort all the frequencies at and above the level it is set at, at a range between 100 Hz and 1kHz. To put it as plainly as possible, if you set the high pass at the lowest level it'll give you an extremely raw old school fuzzy style distortion that captures all of your signal. Think along the line of Motorhead or Cliff Burton on Anesthesia where it's just fuzzy and completely saturated. At around 9-10 o'clock you'll get a more definition giving you more of an old school Geddy Lee tone. And around 2 o'clock and above you start get really crispy, crunchy hi-fi modern distorted bass tones.

The low pass determines the amount of cuff off frequency for cleans to be mixed back in the distortion so you can mix back in more clean lows and mids into your signal to taste.

These two combined are just fantastic tools giving you tons of tonal options and control on exactly what parts of your tone you want getting distorted. And you can set the high drive low and use this pedal as an always on "sound better" pedal.

If I had any major complaint about this pedal it's that the knobs for the low and high pass filters, perhaps the most important parts of this pedal for controlling your tone, are these small black knobs and the identifiers for where its set are these very tiny ridges with no color differentiation. Given how this pedal lights up like a Christmas tree when engaged it's basically impossible to tell visually what the low and high filters are set at. Heck even disengaged it's extremely difficult to tell. They could have had the High and Low Pass have their own LED aspect, or just give them white lines on the knobs to give them some kind of identifier like the four main knobs.

Still it's just the best overdrive / distortion I've played to date. All of the Darkglass pedals I have owned have been extraordinary and I think this one has the tone shaping and flexibility that makes it my favorite of the bunch.
Music background: Student, some professional, hobbyist,
The Best of Darkglass
This is the best pedal that Darkglass has by far. The dual processing ability of this pedal puts it in a league above every other product they have out. I love how creative you can get with this and sculpt literally any tone you want. And plus the cab sim on this makes it even better.
Music background: Bassist in a metal band
Darkglass Microtubes X Ultra Kills
This pedal is fantastic! Replaced two other effects pedals and a DI routing box. I'm a first-time Darkglass user, and likely won't turn back. The sound you can get with this box seems nearly limitless, from crisp clean to heavy dirt. I was undecided between this and the Alpha-Omega, but glad I chose the Microtubes X Ultra. The ability to independently adjust the lows/highs, as well as the onboard compressor convinced me I made the right choice for my desired tones. Also, access to the Darkglass cab sim suite, as well as volume/compression adjustments make this a perfect option for playing through headphones or a home studio setup- which sound great. Only problem......spending way too much time tweaking out with all the options;)