Up for sale is an incredibly rare, legendary powerhouse of digital sound design: the Yamaha Magicstomp Bass (Model UB99B). If you are looking at this listing, you likely already know that this specific dark-blue/black Bass version is one of the hardest models in the entire Magicstomp family to find. 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 cosmetic and fully functional condition, showing only normal signs of gentle use. It has been well cared for, updated, and fully tested. It comes complete with its original, matching Yamaha AC-10 proprietary power supply. Firmware 2.10 &

Ultimate Custom Patch Loadout
This pedal is running the essential Firmware 2.10, which unlocks its maximum potential. While it contains all 99 of the stunning, deep factory bass presets (designed to retain low-end punch, definition, and clarity), this specific unit has been loaded with a dream configuration of classic guitar and studio expansion patches: 

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 both guitar and bass.
Yamaha SPX2000 & Legacy Rack

Patches:Loaded with the legendary studio algorithms directly descended from the world-renowned SPX rackmount units.

The Ultimate Shoegaze & Dreampop MachineIf 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 FrenzyHistorically, 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 that is impossible to access from the pedal's hardware face alone.

Technical Specifications
Digital Signal Processing: 32-bit Internal DSP EngineConversion: Premium 24-bit A/D D/A Converters with 3-bit floating processingSampling Frequency: 44.1 kHz Memory Allocations: 99 Preset Patches / 99 User Programmable Patches Display: High-visibility 16 x 2 Character Backlit LCD screenHardware 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 InvestmentBecause of their unique DSP architecture, specialized component layout, and the irreplaceable nature of their algorithms, vintage Magicstomp units are rapidly climbing in value year over year. Finding a Bass edition in this condition, paired with its original power supply 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!