Audiolab
Audiolab DC BLOCK
Best power filter for audiophiles seeking to eliminate annoying transformer hum.
Elevate your audio experience with the Audiolab DC BLOCK, an essential mains filter designed to eliminate DC voltage from your AC supply. This interference can cause transformer hum and degrade audio quality. The DC BLOCK effectively removes DC, reducing mechanical noise and enhancing the clarity and dynamics of your Hi-Fi system. It also filters RF interference, offering a simple yet powerful upgrade for most audio components with an IEC inlet, ensuring a cleaner, more immersive sound.
$149.00
More DC Block Options
Owner Satisfaction
4.6
/ 5
Category Rank
136
/ 776
#136 in Power Control Units
Price vs Category Average
-84%
Below average
Power Requirement
1002405060
/ -V ~ -Hz
Who it's for
- Audiophiles bothered by mechanical transformer hum
- Listeners seeking cleaner dynamics and improved soundstage clarity
- Minimalists needing a discreet, space-saving power solution
Who should skip it
- Users requiring comprehensive RFI and EMI noise filtration
- Owners with clean mains power already free of DC offset
- Cable-conscious setups looking to avoid additional clutter
Performance breakdown
DC Offset Suppression
Effectively eliminates mechanical transformer hum caused by unstable mains voltage.
RF Interference Filtering
Cleans up high-frequency noise for a noticeably quieter, blacker background.
System Compatibility
Limited by power capacity; best suited for source components and pre-amps.
Ease of Installation
Simple plug-and-play design integrates seamlessly into any existing Hi-Fi setup.
Build Quality
Compact, robust chassis that feels premium and built to last.
Sonic Clarity Improvement
Refines audio dynamics by removing electrical impurities from the signal path.
Key Specs
Power Requirement
100-240V ~ 50-60Hz
Peak Load
600VA
Audio Power Amplifier Compatibility
<2 x 150W or <1 x 300W
Dimensions
113mm x 59mm x 140mm
Weight
0.7 kg
Features
- Removes DC from AC mains
- Reduces transformer hum
- Filters RF interference
- Improves audio performance
- Enhances system clarity
- Easy to connect
What customers say
Audiophile feedback overwhelmingly praises the Audiolab DC BLOCK for its exceptional effectiveness in eliminating mains hum caused by DC offset. Users consistently report a dramatic improvement in system quietness, creating a more immersive listening experience. Beyond noise reduction, many note subtle yet impactful enhancements to sound quality, describing a 'blacker' background that improves detail retrieval and dynamic range. The device’s robust build quality and understated design also receive high marks, ensuring seamless integration into various setups. For those struggling with power related audio issues, this unit is frequently described as a transformative upgrade that delivers tangible sonic benefits, making it a highly valued component.
Know before you buy
If you hear a mechanical buzzing or humming sound coming directly from your amplifier or power supply chassis, it is likely caused by DC offset in your mains. The DC BLOCK is specifically designed to eliminate this interference and silence that transformer hum.
The DC BLOCK works with most audio components that use a standard IEC inlet. However, please note the power limitations: it is compatible with audio power amplifiers up to 2 x 150W or 1 x 300W.
The DC BLOCK is primarily designed to remove DC voltage from the AC supply and filter out RF interference. It is not a surge protector, so you should still use a dedicated surge protection device if you live in an area prone to power spikes.
No, the DC BLOCK is engineered to maintain the current delivery required by your components. By cleaning the power supply, it often improves perceived dynamics and clarity rather than restricting them.
Installation is very straightforward. Simply connect the DC BLOCK between your wall outlet and your audio component using the provided IEC cable, and it will begin filtering the power immediately.
Still have a question?
Ask Hayley anything about this product before you decide.