Noble Audio SPARTACUS Universal Monitors

Hear bigger. Feel deeper. Own every detail.

Spartacus is built to thrill: an energetic, high-resolution in-ear monitor that marries the speed and precision of balanced armatures with the physicality of dual Sonion bone conductors. The result is a visceral, wide-open presentation with sub‑bass authority, lifelike mids and unfussy treble—engineered to turn every track into a front‑row moment without demanding exotic amplification.

Why Audiophiles Choose This Product

• • Sound quality: A bold, W-shaped tuning with deep, textured bass, present and natural vocals, and crisp, non-fatiguing treble. Community impressions and professional reviews highlight a wide stage, explosive dynamics and “fast, bombastic” drive that keeps complex music coherent and exciting.
• • Engineering: A fully Sonion array—4 balanced armatures plus 2 bone-conduction transducers—implemented in a 4‑way, 6‑driver architecture. The bone conductors are coupled to the shell to fortify bass and enhance resolution and spatial “holography.”
• • Practicality: Lightweight 3D‑printed resin shells shaped from large ear‑geometry datasets for comfort and seal, with an integrated stainless-steel wax guard for daily durability.
• • Compatibility: Industry‑standard 0.78 mm 2‑pin sockets and a modular cable with swappable 2.5 / 3.5 / 4.4 mm terminations make Spartacus at home with phones (via dongle), DAPs, and balanced or single‑ended rigs—no special amp required.
• • Unique factor: Unlike many hybrids that reserve bone conduction for subtle sparkle, Spartacus uses dual Sonion BCDs up in the highs and mid‑highs, yielding a distinctly immersive sense of presence and speed without sacrificing tonal balance.

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What’s Included

• • Spartacus Universal-Fit IEMs: 6‑driver hybrid (4x Sonion BA + 2x Sonion bone conductor), composite resin shells, current production with amber composite faceplate and wire mesh.
• • Premium Detachable Cable: 2023 8‑core OCC + silver‑plated OCC, 0.78 mm 2‑pin, modular terminations (2.5 mm balanced, 3.5 mm single‑ended, 4.4 mm balanced).
• • Accessories: Nanuk hard case, 12 pairs of assorted ear tips, Noble bands, Noble crown sticker, cleaning brush (varies by region), and modular plug set.
• • Documentation: Warranty card and user information.

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Technical Specifications

Specification	Value	Notes
Product Type	Wired universal in‑ear monitors (IEMs)	0.78 mm 2‑pin; modular 2.5/3.5/4.4 mm terminations.
Driver Architecture	6‑driver hybrid: 4x Sonion BA + 2x Sonion bone conductors	Bone conductors mechanically coupled to the shell for enhanced bass weight and perceived resolution.
Frequency Response	20 Hz – 20 kHz	Manufacturer/dealer spec range.
Sensitivity	104.9 dB @ 1 kHz	Easy to drive; plays well from portable sources.
Impedance	8.2 Ω @ 1 kHz	Official literature states < 35 Ω; low impedance aids drivability.
Cable	8‑core OCC + silver‑plated OCC; 0.78 mm 2‑pin; swappable 2.5/3.5/4.4	Flexible, low‑microphonic; balances convenience and performance.
Shell/Faceplate	Composite resin shell; amber composite faceplate with wire mesh (current production)	Integrated stainless‑steel wax guard.
Weight	Not specified	Lightweight resin design supports long sessions.

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Professional Recognition

• • Reviews: Head‑Fi community reviews praise Spartacus for “Fast, bombastic sound with tremendous technical performance,” noting wide stage, swift transients and engaging dynamics that belie its all‑BA low‑end topology.
• • Community feedback: Owners and listeners describe a muscular, W‑shaped signature with impressive sub‑bass reach, clean separation, and a touch of “3D” imaging from the bone conductors—without overpowering the mids.
• • Launch coverage: Japanese AV Watch announced Spartacus on September 15, 2023, detailing its 6‑driver Sonion configuration, 3D‑printed shell fit rationale, and full published specs.
• • Heritage: Designed by Noble Audio—founded by Dr. John “Wizard” Moulton, an audiologist known for artisanal IEMs that blend craftsmanship with innovative driver arrays.
• • Ongoing evolution: Noble notes that current Spartacus units ship with an amber composite faceplate and wire mesh; the original organic‑fiber faceplate is no longer used, underscoring continuous refinement.

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The Bottom Line

If you crave a stage that stretches wide, bass that hits with conviction yet stays tidy, and mids that carry voices with lifelike presence, Spartacus delivers that “plug‑in and smile” experience—no special amp, no fuss. Its dual bone conduction implementation adds depth and dimension, while the Sonion BA array keeps everything lightning‑fast and articulate. Add comfort‑first shells and a truly versatile modular cable, and you’ve got a universal monitor that feels custom‑tuned to make every listen a moment you want to repeat.

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Product‑Specific Notes for Headphone Buyers

• Connectivity: Wired only (0.78 mm 2‑pin), with 2.5/3.5/4.4 mm terminations included for maximum source compatibility.
• Amplification: Sensitive, low‑impedance design—plays confidently from phones (via dongle), DAPs, and portable DAC/amps; scaling with source quality is audible but external amplification is not required.
• Sound signature: Energetic, W‑shaped; elevated, controlled sub‑bass; vivid mids; crisp but smooth highs; expansive lateral staging with engaging dynamics.
• Comfort: Ergonomic, 3D‑printed resin shells designed from extensive ear‑geometry data for stable seal and long-session wear; integrated wax guard for easy upkeep.

Research sources: Official Noble Audio product page and About page for primary specifications and current faceplate details; dealer listings (MusicTeck, Hifonix, Audio46) for packaging and exact published specs; AV Watch for launch specs and fit rationale; Head‑Fi and Reddit for corroborated listening impressions and real‑world feedback.

Spartacus isn’t just another multi‑driver IEM—it’s a cohesive, thrilling listen from the first note to the last, backed by a brand with deep roots in the art and science of in‑ear design.