Audiolab
audiolab DC Block 6 - Mains filter - READY FOR DELIVERY
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Color:Black
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audiolab DC Block 6 - Mains filter
The DC Block was designed to improve the quality of AC electricity that powers our audio and AV systems.
Mains electricity has a fundamental influence on the audio signal as it passes through a system, from source to amplifier to speakers. The mains power in a typical home is subject to interference from a variety of issues, causing the AC waveform to distort before it reaches each component. This creates noise in the audio signal, which degrades the sound quality, a situation that continues to worsen as the electrical devices we use in our homes proliferate.
DC mains power supply
A common problem is "DC on the mains," a problem known to affect the performance of audio equipment, especially amplifiers. In theory, the mains electricity we get from our home outlets should be pure AC, with a perfectly symmetrical sine wave alternating between positive and negative phases. However, the presence of "unbalanced loads" - a myriad of household devices that use the available AC power in the mains loop unevenly, from the weakest switches to kitchen appliances to computer power supplies - causes the waveform to be offset, resulting in DC voltage on the AC supply.
DC Voltage
AC transformers commonly used in home audio equipment cannot tolerate the presence of significant levels of DC voltage without being compromised. Less than 500 mV of DC, typical of an average home electrical supply, can be enough to cause toroidal transformers of the type often found in amplifiers to saturate, which adversely affects sonic performance and can cause audible mechanical vibration.
By blocking or cancelling the DC voltage found within the AC mains supply, the Audiolab DC Block corrects the DC offset and rebalances the mains sine wave (see illustration above). But tackling ‘DC on the mains’ is not the only benefit this dual-action device offers: it also contains a high-performance audio-grade filter circuit that removes RFI/EMI contaminants from the mains supply. This is effective in reducing both differential mode noise (aggravated by the low-cost switch mode power supplies used by many household appliances) and common mode noise (aggravated by airborne interference from telephones, Wi-Fi and Bluetooth).
AC transformers commonly used in home audio equipment cannot tolerate the presence of significant levels of DC voltage without being compromised. Less than 500 mV of DC, typical in an average home electrical supply, can be enough to cause toroidal transformers of the type often found in amplifiers to saturate, which adversely affects sonic performance and can cause audible mechanical vibration.
The audiolab DC BLOCK 6 is a six-way solution to this all-too-common problem.
By blocking or canceling the DC voltage present in the AC mains supply, the DC BLOCK 6 corrects the DC offset and rebalances the mains sine wave. But tackling ‘DC on the mains’ is not the only benefit this dual-action device offers: it also contains a high-performance audio-grade filter circuit that removes RFI/EMI contaminants from the mains supply. This is effective at reducing both differential mode noise (exacerbated by cheap switch mode power supplies used by many household appliances) and common mode noise (aggravated by airborne interference from telephones, Wi-Fi and Bluetooth networks).
A specialized six-way power optimization device of such impressive effectiveness, the DC block 6 is available in black or silver.
The DC Block was designed to improve the quality of AC electricity that powers our audio and AV systems.
Mains electricity has a fundamental influence on the audio signal as it passes through a system, from source to amplifier to speakers. The mains power in a typical home is subject to interference from a variety of issues, causing the AC waveform to distort before it reaches each component. This creates noise in the audio signal, which degrades the sound quality, a situation that continues to worsen as the electrical devices we use in our homes proliferate.
DC mains power supply
A common problem is "DC on the mains," a problem known to affect the performance of audio equipment, especially amplifiers. In theory, the mains electricity we get from our home outlets should be pure AC, with a perfectly symmetrical sine wave alternating between positive and negative phases. However, the presence of "unbalanced loads" - a myriad of household devices that use the available AC power in the mains loop unevenly, from the weakest switches to kitchen appliances to computer power supplies - causes the waveform to be offset, resulting in DC voltage on the AC supply.
DC Voltage
AC transformers commonly used in home audio equipment cannot tolerate the presence of significant levels of DC voltage without being compromised. Less than 500 mV of DC, typical of an average home electrical supply, can be enough to cause toroidal transformers of the type often found in amplifiers to saturate, which adversely affects sonic performance and can cause audible mechanical vibration.
By blocking or cancelling the DC voltage found within the AC mains supply, the Audiolab DC Block corrects the DC offset and rebalances the mains sine wave (see illustration above). But tackling ‘DC on the mains’ is not the only benefit this dual-action device offers: it also contains a high-performance audio-grade filter circuit that removes RFI/EMI contaminants from the mains supply. This is effective in reducing both differential mode noise (aggravated by the low-cost switch mode power supplies used by many household appliances) and common mode noise (aggravated by airborne interference from telephones, Wi-Fi and Bluetooth).
AC transformers commonly used in home audio equipment cannot tolerate the presence of significant levels of DC voltage without being compromised. Less than 500 mV of DC, typical in an average home electrical supply, can be enough to cause toroidal transformers of the type often found in amplifiers to saturate, which adversely affects sonic performance and can cause audible mechanical vibration.
The audiolab DC BLOCK 6 is a six-way solution to this all-too-common problem.
By blocking or canceling the DC voltage present in the AC mains supply, the DC BLOCK 6 corrects the DC offset and rebalances the mains sine wave. But tackling ‘DC on the mains’ is not the only benefit this dual-action device offers: it also contains a high-performance audio-grade filter circuit that removes RFI/EMI contaminants from the mains supply. This is effective at reducing both differential mode noise (exacerbated by cheap switch mode power supplies used by many household appliances) and common mode noise (aggravated by airborne interference from telephones, Wi-Fi and Bluetooth networks).
A specialized six-way power optimization device of such impressive effectiveness, the DC block 6 is available in black or silver.
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