Audiolab DC Block 6 – 6-Way DC Blocker & Mains Power Filter for Hi-Fi Systems

Key Advantages

• Eliminates DC offset on the mains for quieter, cleaner sound
• Reduces transformer hum and mechanical vibration in amplifiers
• Advanced EMI/RFI filtering for improved audio clarity
• 6 individually filtered outlets for complete system protection
• High current capability for powerful amplifiers
• Supplied with full set of IEC power cables
• Essential upgrade for revealing Hi-Fi and home cinema systems

The Audiolab DC Block 6 is a high-performance six-way DC blocker and mains power filter designed to solve one of the most common but overlooked problems in audio systems: DC voltage on the AC mains. By restoring a perfectly balanced AC waveform and removing electrical noise, it allows your system to perform at its true sonic potential with lower noise, greater dynamics and improved transparency.

⚡ The Problem: DC on the Mains

In theory, household electricity should be a pure alternating current (AC). In reality, many modern appliances introduce small amounts of DC voltage into the mains supply. Even less than 500 mV of DC is enough to partially saturate the toroidal transformers used in most audio amplifiers. This causes:

• Audible mechanical hum from the transformer
• Reduced dynamic performance
• Loss of low-level detail and soundstage precision

✅ How the DC Block 6 Solves It

The Audiolab DC Block 6 actively blocks and cancels DC voltage from the mains supply, rebalancing the sine wave and restoring optimal operating conditions for your equipment. The result is quieter operation, greater stability and audibly improved performance from connected components.

🔇 Advanced EMI & RFI Noise Filtering

In addition to DC blocking, the DC Block 6 incorporates a high-frequency audio-grade filtering circuit that removes both:

• Differential-mode noise from switched-mode power supplies
• Common-mode noise from Wi-Fi, Bluetooth, mobile phones and airborne interference

This dual-action filtering significantly lowers the noise floor, improving micro-detail, bass control and overall musical clarity.

🔌 Six-Way Power Optimisation

The DC Block 6 provides six filtered IEC outlets for powering an entire stereo or home cinema system. Each outlet supports high current delivery, making it suitable for:

• Integrated and power amplifiers
• Streamers, DACs and CD players
• Turntables and phono preamps

All required power cables are included, making installation simple and immediate.

🎶 Audible Benefits

• Lower background noise
• Improved bass control and impact
• Cleaner midrange and treble
• Greater soundstage stability
• Reduced transformer hum

🏠 Recommended Systems

• High-resolution stereo Hi-Fi systems
• Systems using toroidal transformer amplifiers
• Home cinema installations with multiple power supplies
• Urban environments with unstable or polluted mains supplies

📐 Technical Specifications

• Type: Mains filter and direct current blocker
• Outlets: 6 filtered IEC outlets
• Functions: DC blocking, EMI/RFI high-frequency filtering
• Overload Protection: Yes
• Maximum Load per Outlet: 8 A
• Maximum Total Load: 10 A
• Power Requirements: 100–240 V ~ 50 / 60 Hz
• Dimensions (W × H × D): 444 × 78.4 × 306.4 mm
• Net Weight: 4.6 kg
• Finish: Black or Silver
• Supplied Accessories: 6 × IEC C13 to C14 cables, 1 × mains power cord

The Audiolab DC Block 6 is one of the most effective and affordable upgrades you can make to a high-quality audio system. By delivering cleaner power and eliminating DC contamination, it unlocks performance improvements that no cable or component change alone can achieve.