| General Description | Mains filter & direct current blocker |
| Design Philosophy and Core Technology | 6 outlets |
| High frequency filter suppressing noise on the mains power line | |
| Blocks DC on the mains power line | |
| Overload protection | |
| Digital voltage | |
| Audio Power | Each receptacle loading 8A |
| Amplifier Compatibility | Max total loading 10A |
| Net Weight | 4.6k |
| Gross Weight | 6.8kg |
| Dimensions (mm) (W x H x D) | 444 x 306.4 x 78.4 |
| Carton Size (mm) (W x H x D) | 500 x 455 x 140 |
| Finish | Black / silver |
| Power Requirements (depending on region) | 100-240V ~ 50/ 60Hz |
| Standard Accessories | Power cord, user manual, etc |
Power to the people
Audiolab’s DC Block 6 removes RFI/EMI whilst banishing ‘DC on the mains’, delivering pure, rebalanced power for up to six components in an audio or AV system In 2021, high-performance audio specialist Audiolab – famed for its amplifiers and digital source components spanning four decades – released its first product designed to improve the quality of AC electricity we feed our audio and AV systems.
Priced at a shade under £100 and designed to connect to an individual audio component – an amp, for example – the dual-action DC Block’s remarkable effect on sound quality made it an instant success. For those who want to connect a DC Block to several components in a system, multiple units are needed – each requiring connection to a separate mains outlet. But what if you want a whole-system solution and have only one mains outlet available? Then you need the new DC Block 6.
Serving the purpose of a six-way power strip, the DC Block 6 contains the same highly effective mains filtering and DC blocking technologies as the original DC Block, but provides six individually isolated outlets to deliver pure, rebalanced power to every component in an audio or AV system – thus unlocking its true potential.
Housed in a sleek aluminium enclosure, the DC Block 6 is perfectly proportioned to sit with standard width source and amp components – such as those made by Audiolab – on the shelf of a hi-fi equipment support. At the front is an OLED voltmeter display which shows the measured mains voltage.
Mains electricity has a fundamental influence on the audio signal as it passes through a system, from source to amp to speakers. The mains supply in a typical dwelling is subject to interference induced by a range of issues, causing the AC waveform to distort before it reaches each component. This creates noise in the audio signal, which degrades sound quality – a situation that continues to worsen as the electrical devices we use in our homes proliferate.
One common issue is ‘DC on the mains’ – a problem well known to affect the performance of audio equipment, especially amplifiers. In theory, the mains electricity we obtain from the sockets in our homes should be pure AC, with a perfectly symmetrical sine wave alternating between positive and negative phases. However, the presence of ‘asymmetrical loads’ – myriad household devices that use the AC energy available in the mains cycle unevenly, from dimmer switches to kitchen appliances to computer power supplies – causes the waveform to become offset, resulting in the presence of DC voltage on the AC supply
The AC transformers commonly used in home audio equipment cannot tolerate the presence of significant levels of DC voltage without being compromised. Less than 500mV of DC – typical in an average household electricity supply – can be sufficient to cause toroidal transformers of the kind often found in amplifiers to become saturated, which adversely affects sonic performance and may cause audible mechanical vibration. By blocking, or cancelling, DC voltage found within the AC mains supply, the Audiolab DC Block 6 corrects the DC offset and rebalances the mains sine wave.
Tackling ‘DC on the mains’ is not the only benefit delivered by this dual-action device – it also contains a specialised, high-performance filtering circuit that removes RFI/EMI contaminants from the mains supply. This is effective in reducing both differential-mode noise (exacerbated by cheap switch-mode power supplies used by many home appliances) and common-mode noise (aggravated by airborne interference from phones, Wi-Fi networks and Bluetooth).
This combination of technologies ensures that the DC Block 6 does more than solve the problem of transformer saturation caused by DC on the mains; it also helps to unlock the sonic potential of every audio component to which it is connected. The noise floor drops and the sound gains greater focus, with reduced grain, improved clarity, better defined bass and ‘airier’ treble.
The Audiolab DC Block 6 all-in-one DC blocker and mains filter for audio and AV systems is available from November at an RRP of £349 – refreshingly affordable for a specialised, six-way power optimisation device of such impressive efficacy. It’s available in black or silver and comes with a full set of power cables – six IEC C14 to C13 cables to connect its outlets to the user’s system components, plus a cable to plug it into the mains.
Simple setup
Thank you for considering Yorkshire AV for your next investment in your AV or HiFi setup.
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Returns
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(1) Examples of non-returnable items:
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Orders for items not in stock
Given the vast amount of variations of each product (e.g. AudioQuest cables) or Pro-Ject Audio Turntables - we keep the most common options in stock (i.e. gloss black finish, or 1.5m RCA cables) whereas longer cables or cables with terminations that are less frequently ordered will be ordered as required.
Generally speaking - we receive orders within 2-3 days for UK suppliers and 3-4 days for European suppliers (i.e. AudioQuest, DALI).
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Financing your purchase
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To help you purchase from Yorkshire AV, we have partnered with Kandoo, a regulated credit broker to offer all our customers a range of highly flexible finance options. Kandoo is a comparison service that searches to find you the best Personal Loan option that’s right for you.