Sire Marcus Miller Mahogany 4-String Active Bass Black Swirl, M6H 4/BKSW

The Sire M6H 4-String Active Bass in Black Swirl represents Sire’s modern approach to headless bass design—combining progressive aesthetics with high-performance electronics and precision construction.

With its striking Black Swirl sandblasted finish, multi-scale neck, and powerful Marcus Heritage-3 preamp system, the M6H is built for players who demand clarity, versatility, and ergonomic balance.

A gigbag is included.

Body

• Body Material: Mahogany with Swamp Ash (Sandblasted Finish)

• Body Shape: Sire M Headless Shape

• Finish: Black Swirl

The mahogany core provides warmth and sustain, while the swamp ash enhances definition and attack. The sandblasted texture adds visual depth and tactile character.

Neck

• Neck Material: 5-piece Hard Maple / Mahogany

• Neck Shape: C-Shape

• Scale Length: 33"–34.5" Multi-Scale

• Fingerboard: Rosewood Edgeless™ (Rolled Fretboard Edges)

• Fingerboard Radius: 16"

• Frets: 24 Medium Jumbo (2.4 mm) Stainless Steel

• Nut: Graphtech Tusq XL

• Nut Width: 41.9 mm

• Inlays: White Pearloid / Abalone Rounded-Rectangular Block

The multi-scale configuration improves string tension balance and articulation, while stainless steel frets ensure long-term durability and smooth performance.

Electronics

• Pickups: Marcus Pure-H Revolution Set

• Preamp: Marcus Heritage-3 with Middle Frequency Control

• Controls:

  • Volume / Tone

  • Blender

  • Treble

  • Middle / Frequency

  • Bass

  • Pickup Variation Switch

• Knobs: Black Aluminum

This system delivers precise tonal shaping—from tight modern attack to warm, rounded low-end response.

Hardware

• Bridge: Sire Headless Individual Bass Bridge

• Tuning System: Bridge-integrated headless tuning

• Hardware Finish: Black

• Pickguard: None

The headless configuration enhances balance, sustain, and tuning stability while reducing overall weight.

Included

• Gigbag