McGrath Thunderhorse IV Pool Blue
This Thunderhorse IV, finished in a striking Pool Blue, is a refined evolution of our signature design. Based on the popular model showcased at NAMM 2026, this bass features an updated neck pickup positionmoved back 3/8″ to provide ample clearance for slap players.
The body and headstock are uniquely hand-painted by Madelyn McGrath, making this instrument a true work of art.
Key Components
Pickups: This bass is equipped with three EMG HZ passive pickups configured in our signature layout: Thunderbird, Reverse P, and J.
Preamp: These pickups are routed through an EMG BQ30 3-band preamp, operating at 18 volts for maximum headroom.
Hardware: The bridge and tuners are Leo Quan Badass units, all finished in Black.
Controls:
Each pickup features an individual Switchcraft On/Off slider switch.
The master volume knob is a pull/push switch for true bypass Active/Passive operation.
Build & Comfort
Body: The mahogany body provides excellent resonance and lightweight performance.
Weight: Fully loaded, this bass weighs a comfortable 8.8 lbs.
Neck Profile: The neck features a 1.5-inch J-style nut width, designed for comfort and speed.
Stainless steel frets
Carbon fiber reinforcement rods for neck stability
Two-way spoke nut truss rod
A matching headstock completes the premium package.
Specifications
Model: Thunderhorse IV (2026)
Body: Solid Mahogany
Neck: Roasted Flame Maple
Fingerboard: Roasted Flame Maple
Scale Length: 34″
Nut Width: 1.5″
Radius: 12″
Weight: 8.8lbs lbs
Pickups: EMG HZ Neck, P and Jazz
Preamp: EMG BQ30 running at 18 volts
Switching: Switchcraft Sliders for Pickup Selection
Knobs: Volume (Push/Pull), Bass, Mid, Treble
Push-Pull Function: True Bypass Active/Passive
Bridge: Badass High Mass
Tuning Machines: Badass Lightweights
Hardware Finish: Black
Pickguard: Simulated Anodized Silver
Case: Gator Gig Bag
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