DC-Blocker DCB-1

Dedicated DC-Blocker for Eliminating Transformer Hum at the Source

The Audes DCB-1 is a specialised, high-end DC blocker designed to eliminate one of the most common and disruptive problems in audio systems: DC offset on the mains.
Even a few millivolts of DC can force toroidal transformers into mechanical vibration, creating audible hum, distortion, and reduced current capability.

Compact, elegant, and entirely hand-built in Europe, the DCB-1 removes unwanted DC components from your power line — restoring silent transformer operation and improving the clarity and stability of your audio system.

It is the perfect solution for amplifiers, active speakers, and source components that exhibit mechanical buzz or inconsistent performance caused by polluted household mains.

Why DC Offset Must Be Removed

Modern electrical grids suffer from household appliances, switching power supplies, dimmers, chargers, heat pumps, and other devices that inject DC into the AC waveform.

This leads to:

• humming or buzzing toroidal transformers

• reduced headroom and dynamics

• voltage asymmetry

• mechanical vibration

• harsher highs and midrange

• inconsistent performance throughout the day

The Audes DCB-1 blocks DC from entering your audio components, ensuring that their power supplies work under ideal, symmetrical AC conditions.

Key Technical Features

🔹 High-Capacity DC Blocking Network

The DCB-1 is engineered to effectively suppress DC offset on the AC mains.
It uses a high-capacity DC-blocking circuit that:

• eliminates transformer hum

• removes asymmetric loading on the power supply

• improves stability and dynamic performance

• reduces mechanical vibration in toroidal transformers

• ensures clean AC power for sensitive audio equipment

This technology is especially important for toroidal transformers, which are extremely sensitive to DC.

🔹 Designed for Low- and Medium-Current Devices

According to Audes, the DCB-1 is suitable for:

• DACs

• Streamers

• Preamplifiers

• Phono stages

• Integrated amplifiers (medium power)

• Active speakers

• Subwoofers

⚠️ Not intended for:

• large Class-A amplifiers

• very high-current power amplifiers
  For those applications, use the TT- or ST-series DC conditioners.

🔹 Compact, Elegant Design

The DCB-1 is built into a discreet, lightweight enclosure that makes it ideal for:

• desktop systems

• headphone setups

• secondary systems

• racks with limited space

• media consoles and AV furniture

Despite its size, the DCB-1 incorporates robust internal components and hand-built European craftsmanship.

Gold-Coated Connectors for Maximum Conductivity

The DCB-1 includes high-quality, gold-plated connectors, ensuring:

• reduced contact resistance

• long-term stable performance

• corrosion resistance

• low-noise power transfer

These connectors prevent the small losses and micro-arcing that can occur with cheaper power distribution hardware.

What You Can Expect to Hear

Users typically report:

• elimination of mechanical hum from amplifiers

• a quieter background

• improved bass control

• smoother midrange

• more relaxed, natural treble

• more consistent sound quality throughout the day

The improvement may vary depending on your electrical environment — but in systems affected by DC offset, the impact can be dramatic.

Audes at Authentic High End Brussels — Honest, Real-World Testing

We always remain transparent:
At Authentic High End Brussels, we were historically sceptical about power accessories.

But after Steve carried out systematic testing, the DCB-1 proved highly effective for systems suffering from transformer hum.

However:
The effect depends strongly on:

• the DC offset in your home

• the sensitivity of your components

• time-of-day variations in the grid

👉 We strongly recommend testing the DCB-1 in your own system.

We are genuinely curious to hear your results.

Why Choose the DCB-1 at Authentic High End Brussels?

• Official Audes dealer for Belgium

• Real-world testing by Steve

• Honest, technically accurate guidance

• Perfect for eliminating mechanical transformer hum

• Small, elegant, highly effective DC blocker

• Home demos available

• Fine-tuning support by Steve & High End Mary

More info: Audes DCB-1