Thunderhorse - 12 way and Tilt EQ - British Racing Green
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Thunderhorse - 12 way and Tilt EQ - British Racing Green
Build one like it
Opens this exact bass in the Bass Builder, ready to change anything you like.4.97 from 38 players Read reviewsHandbuilt in San Diego by our two-person shopMcGrath Protec hybrid case included
This is an example of our flagship Thunderhorse, featuring our new 12-way pickup selector and McGrath Tilt EQ.
This beautiful bass is finished in a hand-painted British Racing Green by Madelyn McGrath with our new high-gloss finish. The pickups feature three Nordstrand soapbars, the exact set that had so many calling this the best-sounding bass at NAMM 2026:
Neck: Big Blade with a warm & woolly winding
Middle: Big Split
Bridge: Big Single
The pickups route directly into our proprietary 12-way rotary selector, a feature we are extremely proud of. An accompanying app is currently in development that will allow you to customize your selector options down to as few as 2 positions.
Next is our latest innovation, the McGrath Tilt EQ, a single-pot preamp featuring a tilt EQ and buffer. Turning the center detent knob clockwise delivers beautiful, glassy highs, while turning it counterclockwise yields a rich, powerful low end. You can easily bypass the active preamp using the push-pull function on the Master Volume knob. We have also included a passive tone control for ultimate versatility.
Powered by an 18V active system, the electronics include a built-in failsafe: if you lose battery power during a live set, simply pull the volume knob to bypass the preamp, and the 12-way selector automatically defaults to running all three pickups in parallel passive mode.
The bass shown in these photos is the exact instrument you will receive. We are a two person team based in San Diego, California, and we put our heart and soul into every one off build.
Control Layout
Master Volume (with Push-Pull Preamp Bypass), 12-Way Pickup Selector, Tilt EQ, and Passive Tone Control.
Specifications
Model: J-Style Thunderhorse
Finish: British Racing Green (High Gloss)
Body: Solid Mahogany
Neck: Roasted Flame Maple with Carbon Fiber Reinforcement
Fretboard: Roasted Flame Maple (12" Radius)
Frets: Medium Jumbo Stainless Steel
Nut Width: 1.5" J-Style
Scale Length: 34"
Weight: 8.4 lbs
Pickups: Nordstrand (Big Blade Warm & Woolly winding, Big Split, Big Single)
Electronics: McGrath Guitars 12-Way Rotary Selector, McGrath Tilt EQ
Bridge: Badass High-Mass Bridge
Tuners: Badass Lightweight Tuners
Hardware: Nickel
Pickguard: Tortoiseshell
Strings: D'Addario NYXL (.045–.100)
Case: McGrath ProTec Hybrid Case
Bass Builder
Sold, but you can build one like it
Open this exact bass in the Bass Builder to order your own, or change anything you like.
Hand-painted finishes are one of a kind, so yours will be close, never identical.
Open this build in the Bass BuilderMG2-203E-0000-0000-0000-4444-7DD0-0