Audes ST-500DC

Compact DC-Blocking Conditioner for Streamers, DACs & Low-Current Systems

The Audes ST-500DC is the most compact power conditioner in the Audes ST-series.
Designed for low-current audiophile components, it delivers clean, stable, DC-free power to sensitive digital and analogue devices such as DACs, streamers, preamplifiers, phono stages, and network switches.

Despite its modest size, the ST-500DC incorporates Audes’ trademark power-conditioning technologies — including a custom toroidal transformer and a high-quality DC blocker — ensuring silent operation and a refined, natural sonic improvement.

It is the perfect choice for smaller systems, desktop setups, headphone rigs, or any source-based system that deserves cleaner, quieter power.

Why Choose the ST-500DC?

🔹 Optimised for Low-Current Audiophile Components

Because it is rated at 500 VA, the ST-500DC is ideal for audio devices that do not require large current reserves, such as:

Perfect matches:

• Streamers (Wattson, Linn, Bluesound, Auralic, Lumin…)

• DACs

• Headphone amplifiers

• Network switches & optical bridges

• Phono stages

• Preamplifiers

• Turntable power supplies (Radikal, Lingo, Rega PSU…)

Not recommended for:

• Power amplifiers

• Large integrated amplifiers

• Active speakers
  (Use the ST-1500DC or ST-3000DC instead.)

This model is specifically engineered to clean the power feeding your most sensitive components, where noise has the biggest impact on sound quality.

Key Benefits

🔹 High-Quality Toroidal Transformer

Verified sources confirm that the ST-500DC uses a single toroidal transformer, designed to:

• improve mains isolation

• lower electromagnetic noise

• minimize transformer vibration

• maintain stable voltage

• reduce distortion in digital circuits

This transformer topology is the foundation of the ST-series’ smooth, unforced presentation.

🔹 DC-Blocking for Silent Operation

The integrated DC blocker removes DC offset — one of the main causes of:

• buzzing transformers

• loss of microdetail

• harsh digital treble

• unstable dynamics

• increased distortion

The ST-500DC delivers a clean, symmetrical AC waveform, allowing your digital and analogue devices to operate under ideal conditions.

🔹 Improved Sound Quality Across the Spectrum

Based on verified user and retailer feedback, the ST-500DC typically delivers:

• a quieter background

• smoother, more refined high frequencies

• deeper, cleaner bass

• increased transparency in midrange

• more stable timing & musical flow

• better separation of instruments

• reduced digital glare

It’s the perfect upgrade for digital audio front-ends.

Hand-Built European Quality

As with all Audes conditioners, the ST-500DC is:

• hand-assembled in Europe

• built using premium components

• housed in a solid metal chassis

• engineered for long-life and silent operation

Audes has been building transformers since the 1930s — this expertise is the heart of the ST-series.

Audes at Authentic High End Brussels — Honest & Proven Results

We remain transparent:
At Authentic, we used to be sceptical about power conditioners.

But after Steve spent months conducting deep, methodical testing, the ST-series — including the ST-500DC — consistently improved source-based systems.

However:
The effect varies depending on your electrical environment.

👉 That’s why we strongly recommend testing the ST-500DC in your own home.

We look forward to hearing your experience.

Why Choose the ST-500DC at Authentic High End Brussels?

• Official Audes partner for Belgium

• Honest, experience-based guidance

• Ideal for source-driven systems

• Perfect upgrade for DACs and streamers

• Home demo & private listening sessions available

• Expert matching by Steve & High End Mary

More info: Audes ST-500DC