Reduce the noise over AC power with the black Audiolab DC Block Single-Outlet Inline Power Conditioner. It is designed to reduce the noise carried over your AC power and, when used with an amplifier, is rated for amps that output up to 300W total.

Designed to Reduce Noise from AC Power    100 to 240 VAC Power Support

One common issue with AC power is "DC over AC," a problem well known to affect the performance of audio equipment, especially amplifiers. In theory, the AC 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 power 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 DC Block corrects the DC offset and rebalances the AC sine wave.

The DC Block also contains a high-performance audio filtering circuit that removes RFI/EMI contaminants from the power supply. This is effective in reducing both differential-mode noise (exacerbated by inexpensive 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 does more than solve the problem of transformer saturation caused by DC over your AC line; it also helps to unlock the sonic potential of any 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.

Using the DC Block is simple – plug its output into the IEC power socket of an audio / A/V component, then connect its input to an AC outlet. The device is designed for use with a single system component – Audiolab recommends that if one DC Block is used, it should be used with the integrated amp or power amp component within your system to obtain the greatest benefit from the DC-blocking technology.

Related Questions and Answers

Q: 1. 10 amp is good for integred amplifier ? Marantz model 30?

A: The 10A supplied by the Furman Furman AC-215A 2-Outlet Power Conditioner is more than enough amperage to power the Marantz Model 30.

Q: 2. how long is the power cord, need a power strip with a 25 ft board?

A: The cable length for this unit is 14.5 ft long.

Q: 3. Good for hifi audio system?

A: Yes, the Merit Series M-8Dx would be a good choice for use with a hi-fi system for power distribution. The added RFI and EMI filtering is going to protect against noise transmitted to the devices from the AC source. Please note this is not a regulator, so it will not auto-regulate the voltage to maintain optimal performance from the amplifier, which can also be a source of noise in an audio system. The most optimal setup for Hi-Fi would be to use a voltage regulator unit like the Furman M-8x AR in conjunction with a unit like the M-8Dx.

Q: 4. does this have wall mount holes on the back?

A: Yes it Has two of the them Left and Right sides. with a tri fit meaning: you can lock in 3 different angles 1. top 2. Bottom,3. one side.

Q: 5. what is the clamping voltage for the furman ss-6b?

A: That detailed information is only available by calling Furman directly. It's a fine general use surge protector but if you wanna protect your gear, step up to Surgex

Q: 6. Do all of the outlets face the same direction? If so it would seem that if you're using a lot of wall warts (with three prongs) that the top three would block the bottom three from being able to plug in anything.

A: Yes, the Furman SS-6B Power Pro Plug 6 Outlet Block B&H # FUSS6B outlets all face the same direction. It is possible that some of them could be blocked if you are plugging in adapters that are large and have to face in that specific direction.

Q: 7. Do all of the sockets face the same directions? If this is the case, it would seem like it would only allow for three wall warts to be plugged in instead of 6 as the bottom sockets would be blocked by the top warts. (If they were three pronged)

A: Correct, they will get blocked.

Q: 8. Is this unit half rackmount able ?

A: Although the Furman AC-215A does come with mounting hardware, its dimensions are smaller than the standard half-rack size.

Q: 9. what is the length of the cable ?

A: The cable for this unit is a little over 14.5 feet long.

Q: 10. What is the gauge of the cord? 14 or 12?

A: The power cord is 14 gauge.