Updated 17 May 2026
| Brand | Spira Guitars |
| Category | Musical Instruments |
| Available at | 1 UK stores |
| 90-day avg | £369.00 |
Spira Guitars
Spira Guitars B-400 MGR Bass Satin Green
£369.00Fair Price
Cheapest at Gear4music · 1 store
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PRICE HISTORY
Current
£339
Change
+12.4%
Avg
£318
Low
£292
High
£344
Volatility
4.0%
PRODUCT DESCRIPTION
- Lightweight roasted body The B-400 is built around a roasted poplar body offering an excellent balance of weight resonance and tonal focus. Roasting the wood removes moisture and increases stability giving the bass a more responsive feel with improved consistency across the frequency range. This process also helps the instrument remain lightweight reducing fatigue during longer sets or rehearsals while still delivering a punchy controlled low end. Players who value comfort without sacrificing tone will appreciate how naturally the bass sits against the body. Modern neck for fast playability The roasted maple neck and fretboard contribute not only to the instrument&rsquo
- s sleek aesthetic but also to its stability and clarity. The Modern D shape provides a familiar comfortable grip that suits a wide range of techniques from fingerstyle to fast pick work. Its 24 jumbo frets and 13.75-inch radius give you room to explore the full two-octave range with accuracy and ease. Roasting the maple increases its structural integrity helping the neck withstand climate changes and busy gig schedules. Active electronics for clarity and attack At the heart of the B-400 are its custom Spira Villain active soapbar pickups. Voiced with ceramic magnets they deliver the tight articulate lows and pronounced midrange needed to stand out alongside loud guitars and powerful drums. The active circuit keeps the output clean and punchy ensuring your tone stays defined even at higher gain levels. Whether you prefer aggressive modern bass sounds or cleaner classic tones the electronics provide a versatile foundation. Built for stage and studio reliability The B-400&rsquo
- s hardware is designed to offer consistent performance in demanding environments. The fixed bridge enhances sustain and keeps intonation locked in while the black machine heads provide solid tuning stability. The satin finish feels smooth to the touch and reduces glare under bright stage lights. Combined with the dependable dual-action truss rod and sturdy construction the instrument is engineered to handle rehearsals recording sessions and live shows with ease. Specifications Product Name: Spira Guitars B-400 MGR Bass Satin Green Product Code: B-400 MGR Body Body Material: Roasted poplar Finish: Satin Colour: Satin Green Neck & Fretboard Neck Material: Canadian roasted maple Neck Shape: Modern D Fretboard: Canadian roasted maple Radius: 13.75" Frets: 24 jumbo Nut Width: 42mm Nut: Artificial bone Truss Rod: Double action Scale Length: 34" Hardware & Electronics Pickups: Spira Villain Bass soapbars ceramic active circuit Controls: 1 volume 1 tone Bridge: Fixed Machine Heads: Black Hardware Colour: Black