The Westone Thunder I-A Active Bass is a high-quality Made in Japan instrument from the legendary Matsumoku factory, produced during the early to mid-1980s. Known for exceptional build quality and reliability, Matsumoku-era Westone basses have become increasingly sought after by players and collectors alike.

Featuring a solid body with a natural gloss finish, the Thunder I-A delivers punchy, articulate bass tones with excellent clarity. Its active electronics provide added headroom and tonal flexibility, making it well suited to rock, funk, pop, new wave and studio applications. The comfortable maple neck and rosewood fingerboard offer smooth playability across the full scale length.

Built to professional standards and designed to last, the Westone Thunder I-A is a fantastic example of vintage Japanese craftsmanship and a reliable, great-sounding bass for both stage and studio use.

Specifications

Model: Thunder I-A
Brand: Westone
Country of Manufacture: Japan
Factory: Matsumoku
Era: 1980s
Instrument Type: Electric Bass Guitar
Body Type: Solid Body
Finish: Natural Gloss
Neck Construction: Bolt-On
Neck Material: Maple
Fingerboard: Rosewood
Fingerboard Inlays: Dot
Number of Frets: 21
Scale Length: Long Scale (approx. 34")
Pickup Configuration: Split-Coil Pickup
Electronics: Active Preamp
Controls:
– Volume
– Tone
– Active EQ
Bridge: Fixed Bass Bridge
Tuners: Chrome Open-Gear
Strings: 4-String
Orientation: Right Handed