Yamaha Magicstomp Rare UB99MK2 Firmware 2.10 + Holdsworth Patches + Original Power Supply

Up for sale is an incredibly rare, legendary powerhouse of digital sound design: the Yamaha Magicstomp MK2 (Model UB99MK2). If you are looking at this listing, you likely already know that this specific MK2 version is one of the most coveted models in the entire Magicstomp family. It is a certified cult classic that delivers studio-grade processing power that absolutely no other modern multi-effects pedal can replicate.

This unit is in excellent condition with normal wear for its age, and works perfectly. It has been well cared for, updated, and fully tested. It comes complete with its original, matching Yamaha AC-10 proprietary power supply and the original factory-printed Magicstomp Effects List book.

Why the MK2 is the Holy Grail

What makes the MK2 so highly sought after compared to the original V1 is its standalone power. Yamaha added on-board deep patch editing navigation directly from the pedal's face—meaning you can finally tweak your parameters without being tethered to a computer. Combined with the added built-in headphone jack, it is infinitely more practical for modern live and studio use.

Ultimate Custom Patch Loadout

This pedal is running the essential Firmware 2.10, which unlocks its maximum potential. While it contains 99 stunning factory guitar presets, this specific unit has been loaded with a dream configuration of classic guitar and studio expansion patches in its user bank:

Allan Holdsworth Patches: Includes the iconic, elusive patches designed for and by Allan Holdsworth for the highly sought-after UD Stomp. These utilize the Magicstomp's unique algorithmic structure to generate breathtaking 8-parallel delays. The modulation, bloom, and multi-tap diffusion create a glorious, symphonic sheet of sound that sounds absolutely massive on guitar.

Yamaha SPX2000 & Legacy Rack Patches: Loaded with the legendary studio algorithms directly descended from the world-renowned SPX rackmount units.

The Ultimate Shoegaze & Dreampop Machine

If you track or perform Shoegaze, Post-Rock, or Dreampop, this pedal is holy-grail territory. Packed into this compact enclosure are Yamaha's definitive Symphonic chorus modulation and immaculate Early Reflections (ER) algorithms. By running these reverse and dense early reflections into the high-headroom delays, you achieve the exact three-dimensional wall-of-sound textures made famous by pioneers of the genre.

Modern Patch Management: Magicstomp Frenzy

Historically, editing a Magicstomp was difficult due to obsolete software. However, this unit is fully compatible with the modern, community-developed Magic Frenzy computer editor. Running flawlessly on modern Mac and PC operating systems via a standard USB connection, Magicstomp Frenzy provides an intuitive user interface for easy patch storage, backup, and incredibly deep menu-diving parameter editing.

Technical Specifications

Digital Signal Processing: 32-bit Internal DSP Engine

Conversion: Premium 24-bit A/D D/A Converters with 32-bit floating processing

Sampling Frequency: 44.1 kHz

Memory Allocations: 99 Factory Preset Patches / 99 User Programmable Patches

Display: High-visibility 16 x 2 Character Backlit LCD screen

Hardware Controls: 3 Multifunction Parameter Knobs, Master Volume, 3 Heavy-Duty Footswitches

Rear Panel I/O: 1/4 inch Monaural Input with High/Low input level slide switch, 1/4 inch Left/Mono and Right Stereo Outputs, 1/8 inch Headphone Output, and USB Type-B port

Power Requirements: Requires 12V AC 1A via the included exclusive Yamaha AC-10 power adapter

An Appreciating Investment

Because of their unique DSP architecture, specialized component layout, and the irreplaceable nature of their algorithms, vintage MK2 Magicstomp units are rapidly climbing in value year over year. Finding a guitar edition in this condition, paired with its original power supply, factory-printed effects list book, and pre-loaded with the definitive Holdsworth and SPX libraries, is a true rarity. 

It is a studio secret weapon and a bulletproof investment for your gear collection.

Item will be packed with professional care and shipped fully insured.

Thanks for looking!