Mogami 3104 (W3104) Speaker Cable Review

The Mogami 3104 (also known as W3104) is a professional-grade four-conductor speaker cable from the Japanese manufacturer Mogami. Originally designed for studio and high-power applications, it has become extremely popular among audiophiles as a high-value DIY or pre-terminated speaker cable. It is often referred to as one of “the cables of the pros” due to Mogami’s widespread use in recording studios.

Design and Specifications

The 3104 features four large 12 AWG (approximately 3.96–4.0 mm²) conductors made from Mogami’s Neglex oxygen-free copper (OFC). Each conductor uses a high strand count (7/50/0.12) for excellent flexibility.

Key technical points:

• Overall diameter: 14.5 mm
• Jacket: Tough yet super-flexible matte black PVC
• DC resistance: Very low at 0.005 Ω/m
• Inductance: Approximately 0.6 µH/m
• Capacitance: Roughly 80–110 pF/m depending on conductor pairing
• Colour-coded conductors (typically brown/red/orange/yellow)

It can be used in several ways:

• Standard two-conductor (by paralleling opposite conductors)
• Bi-wiring
• Star-quad configuration for reduced electromagnetic interference

Despite its substantial conductor size, the cable remains remarkably flexible and easy to handle and terminate.

Sound Quality

User feedback from audiophile forums and DIY builders is consistently positive, especially considering the relatively modest price.

Strengths most frequently mentioned:

• Strong, deep, controlled, and well-defined bass with good weight and impact
• Clear, natural, and full-bodied midrange with excellent instrumental body and realistic vocals
• Smooth, non-fatiguing treble that avoids harshness or grain
• Good overall transparency, separation, and imaging
• Balanced and engaging presentation that many describe as musical rather than clinical

Some listeners note that the extreme top end can sound slightly softer or more recessed compared with certain brighter high-end cables, though the mid-treble (violins, cymbals, etc.) is usually praised for its harmonic richness and lack of grit. Many owners report that the cable improves significantly with burn-in (often cited around 80–130+ hours).

In comparisons, the 3104 is frequently preferred over more expensive commercial cables for its combination of bass authority, midrange naturalness, and overall balance. It is particularly well regarded in systems that benefit from solid low-end control and a slightly warmer, more natural tonal balance.

Pros

• Excellent performance-to-price ratio
• Large conductor cross-section with very low resistance
• Highly flexible despite its thickness
• Versatile (single-wire, bi-wire, or star-quad)
• Clear, detailed, and non-fatiguing sound with strong bass
• Durable professional construction

Cons

• Relatively high capacitance compared with some audiophile designs (may not suit every amplifier/speaker combination, especially very long runs)
• Extreme high frequencies can sound a touch softer than the brightest competitors
• Thick diameter requires solid connectors and careful termination
• Available mainly as bulk cable or from specialist terminators (not a widely pre-packaged “boutique” product)

Verdict

The Mogami 3104 is one of the strongest value propositions in speaker cables. It delivers a clear, powerful, and musically engaging performance that many listeners prefer to far more expensive alternatives. Its combination of low resistance, solid construction, flexibility, and natural tonal balance makes it an outstanding choice for both DIY enthusiasts and those seeking high performance without extreme cost.

It is especially recommended for systems that benefit from authoritative bass and a smooth, natural midrange. While not the absolute last word in ethereal top-end air or ultra-low capacitance designs, it remains a highly respected and frequently recommended cable in the audiophile community.

Highly recommended for anyone looking for serious speaker cable performance at a realistic price.