Wireworld HDMI Sphere 48 5m cable

In the HDMI lineup from American manufacturer Wireworld, the Sphere 48 represents a first step into the brand’s proprietary technologies. It succeeds the original Sphere, retaining the Uni-Path architecture while adopting the third generation of COMPOSILEX insulation. This cable carries video and audio signals up to 48 Gbit/s, the threshold required to fully exploit HDMI 2.1 features.

Uni-Path architecture and noise reduction

The Uni-Path geometry sets the Sphere 48 apart from conventionally designed HDMI cables. Unlike standard triple-shielded structures, this internal architecture positions the conductors to minimize electromagnetic interference and crosstalk between channels. Shielding is still present – three layers protect the signal – but the layout of the elements is different.

COMPOSILEX 3 insulation surrounds the oxygen-free copper (OFC) conductors. Developed by Wireworld to reduce triboelectric noise, this composite material acts on the micro static discharges generated by contact between conductors and insulation, a phenomenon amplified by vibrations and signal transmission. The brand claims that this third generation improves tonal purity and spatial separation compared to COMPOSILEX 2 used on the previous model.

Extended video compatibility

The Sphere 48 supports the full range of HDMI 2.1 features. Resolution reaches 8K at 60 Hz or 4K at 120 Hz, with support for dynamic HDR (Dolby Vision, HDR10+). Variable Refresh Rate (VRR) and 48-bit color depth allow recent game consoles, graphics cards, or UHD Blu-ray players to be connected without bandwidth limitation. HDCP 2.3 protection ensures compatibility with protected content.

Audio transmission and specialized connections

The eARC (Enhanced Audio Return Channel) can send an uncompressed multichannel audio stream from a TV to an amplifier or soundbar, eliminating the need for a second optical or coaxial cable. The Sphere 48 is also compatible with I2S connections, a protocol used by certain high-end CD players and DACs to transfer audio data synchronously over separate lines.

Connectors and flexibility

The connectors feature 24-carat gold plating on their contacts, a conventional choice to limit oxidation and maintain stable conductivity over time. The cable itself has a flexible construction, making it easier to route behind furniture or along a cable duct. UL CL2 and FT4 certifications authorize in-wall installation, in compliance with North American fire safety standards.

Positioning within the Wireworld range

The Sphere 48 sits above the Radius 48, which uses a conventional architecture with the same COMPOSILEX 3 insulation. It is followed by the Silver Sphere 48 and the Platinum Starlight 48, whose conductors incorporate, respectively, a silver layer and solid silver cores. This hierarchy allows you to scale your investment according to your system’s priorities: the Sphere 48 delivers the benefits of Uni-Path geometry without resorting to the silver-plated conductors of the higher models.

Available lengths range from 0.6 meters to 5 meters. All cables carry a lifetime warranty.

Technical Specifications

Video Capabilities

• Maximum resolution: 8K
• Compatibility: 4K, 8K
• Dynamic HDR
• Color depth: 48-bit (3 × 16)
• VRR (Variable Refresh Rate)
• Content protection: HDCP 2.3

Audio Capabilities

• eARC (enhanced Audio Return Channel)
• Compatible with high-end I²S audio connections

Technologies and Design

• HD-Bridge architecture
• Uni-Path geometry
• Oxygen-free copper conductor
• COMPOSILEX 3 insulation
• 24-karat gold-plated connectors

Electrical Specifications

• Maximum bandwidth: 48 Gbit/s
• Characteristic impedance: 8 Ω

Certifications and Standards

• UL standard: CL2
• Certification: FT4