[iFi audio]

Enhance the quality of AC electricity for your audio and AV systems.​

If you have a mechanical hum, deploy the DC Blocker+

Sayonara mechanical hum.​

Mains electricity, crucial to your audio systems, can often be disrupted by various interferences, distorting the AC waveform, and reducing audio quality. ‘DC on the mains’ is a common problem, particularly with amplifiers.
Although household outlets are intended to deliver pure AC power, a range of your home appliances—from lighting controls to home appliances power supplies—create ‘asymmetrical loads’, resulting in DC voltage on the AC supply.
When a small amount of DC voltage from the mains reaches the transformer, it can cause ‘saturation’, leading the transformer to produce a significant and persistent humming sound. You can hear it when you bring your ear close to or next to the chassis.
The DC Blocker+ is a smart device that, when you place it at the IEC (the rear power inlet), prevents DC from getting into the amplifier, thus eliminating transformer hum.

Plus for Higher Power Equipment.​

The bigger the amplifier, usually, the larger the toroidal transformer — often sensitive to residual DC voltage. Simply add the DC Blocker+ at the IEC to stop DC from getting in.

• Globally compatible (90-250V).
• Designed for high-power equipment (Continuous current rating: 10A).
• Compact design ensures it doesn’t obstruct other connectors, sockets, or cables.

ZERO DC Block technology – stops DC from getting into your amplifier and eliminates amplifier transformer hum.

Designed for high-power equipment (continuous current rating: 10A).

EMI shielding is retained.

High-performance glass passivated semiconductor. High-case dielectric strength of 1500VRMS. UL listed. Flame resistant IEC socket/connecter/chassis (Fireproof polymers UL94-V0).

Here's a comparison of the DC Blocker!

Get Yours!

Cheers!!

 

[Somatic]

Seems useful.

 

[Mr BubbaHyde]

Seems useful.

Thanks, For some folks this is an issue, this little device is aimed at solving it, and should provide some needed relief and improvement!

I may try one as I have some amps around that this is a small issue, I will report back how it does.

Cheers!!

 

[pail]

I am looking to suppress the small background noise (when music is not playing) from my pc when using a Qudelix in usb mode, could this be helpful?

 

[Mr BubbaHyde]

I am looking to suppress the small background noise (when music is not playing) from my pc when using a Qudelix in usb mode, could this be helpful?

It is quite possible that this may help you.

My advice would be to purchase through somewhere that will offer you a good return window just in case this is not the root cause of the noise you are hearing, that way you can try it and return it if need be without harm.

if possible you can buy directly from our website, This has a 30-day no-fault return policy to protect you.

Let us know how you make out!

Cheers!!

 

[Assationater]

Tbh, as this doesnt seem to use any OFC wiring or conectors/plugs it'll prob change the sound signature slightly and unlike ifi's usb purfiers which dont use OFC interally either those atleast prob 'enhance' the sound abit more.

 

[NYanakiev]

I don’t quite understand what the difference is between a DC Blocker and DC Blocker+

My Bliss KTE amp makes a buzzing sound when switched on (none of my other gear does that). The sound is not audible with my headphones on and no music playing.

@iFi audio

 

[Assationater]

I don’t quite understand what the difference is between a DC Blocker and DC Blocker+

The + ver is suited for higher amperage/current/power devices.

 

[iFi audio]

I don’t quite understand what the difference is between a DC Blocker and DC Blocker+

My Bliss KTE amp makes a buzzing sound when switched on (none of my other gear does that). The sound is not audible with my headphones on and no music playing.

@iFi audio

@Assationater Is correct here...

DC Blocker is good for up to 4 Amps
DC Blocker + is for up to 10 Amps

Cheers!!

 

[NYanakiev]

@Assationater Is correct here...

DC Blocker is good for up to 4 Amps
DC Blocker + is for up to 10 Amps

Cheers!!

Thank you for the response. Unable to find amp specs for the Holo Bliss KTE…

Which one would you recommend for my amp? Here are is everything I could find:

General info: ​

LINE IN:​

Single-ended RCA input (QTY 3)​

Maximum amplitude 8.4Vrms
Input impedance 6.2KΩ

Balanced XLR input (QTY 2)​

Maximum amplitude 16.8Vrms
Input impedance 12.4KΩ

HEADPHONE​

OUTPUT:​

4P XLR Output​

Low impedance mode (LO-Z): Output impedance 0Ω, power 12Wrms@32Ω
High impedance mode (HI-Z): output impedance 15Ω, power 2.5Wrms@150Ω

4.4mm Pentaconn Output​

Low impedance mode (LO-Z): output impedance 2Ω, power 12Wrms@32Ω
High impedance mode (HI-Z): output impedance 17Ω, power 2.5Wrms@150Ω

6.35mm TRS Output​

Low impedance mode (LO-Z): output impedance 1Ω, power 3Wrms@32Ω
High impedance mode (HI-Z): output impedance 8.5Ω, power 0.6Wrms@150Ω

LINE OUT:​

Single-ended RCA Output​

Maximum amplitude 10Vrms
Output impedance 20Ω

Balanced XLR Output​

Maximum amplitude20Vrms
Output impedance 40Ω

PHYSICAL​

CHARACTERISTICS:​

Size 430x300x55mm / 16.93×11.81×2.17inches (W x L x H, Dimensions do not include protruding parts) additional 12 mm for machined feet
Weight 10kg / 22.05lbs

CONFIGURATION​

Power Input (configurable, see label on bottom of unit for specified input)​

220-230V 50/60Hz – Use Fuse Type 2A SB 5x20mm (when internal switches are set@220v)
110-115V 50/60Hz – Use Fuse Type 4A SB 5x20mm (when internal switches are set@110v)

Power consumption​

50w

ACCESSORIES:​

Included Accessories​

AC Power Cable x1 (Applicable to North America only)

Remote Control x1 (only with KTE model)

 

[iFi audio]

Thank you for the response. Unable to find amp specs for the Holo Bliss KTE…

Which one would you recommend for my amp? Here are is everything I could find:

General info: ​

LINE IN:​

Single-ended RCA input (QTY 3)​

Maximum amplitude 8.4Vrms
Input impedance 6.2KΩ

Balanced XLR input (QTY 2)​

Maximum amplitude 16.8Vrms
Input impedance 12.4KΩ

HEADPHONE​

OUTPUT:​

4P XLR Output​

Low impedance mode (LO-Z): Output impedance 0Ω, power 12Wrms@32Ω
High impedance mode (HI-Z): output impedance 15Ω, power 2.5Wrms@150Ω

4.4mm Pentaconn Output​

Low impedance mode (LO-Z): output impedance 2Ω, power 12Wrms@32Ω
High impedance mode (HI-Z): output impedance 17Ω, power 2.5Wrms@150Ω

6.35mm TRS Output​

Low impedance mode (LO-Z): output impedance 1Ω, power 3Wrms@32Ω
High impedance mode (HI-Z): output impedance 8.5Ω, power 0.6Wrms@150Ω

LINE OUT:​

Single-ended RCA Output​

Maximum amplitude 10Vrms
Output impedance 20Ω

Balanced XLR Output​

Maximum amplitude20Vrms
Output impedance 40Ω

PHYSICAL​

CHARACTERISTICS:​

Size 430x300x55mm / 16.93×11.81×2.17inches (W x L x H, Dimensions do not include protruding parts) additional 12 mm for machined feet
Weight 10kg / 22.05lbs

CONFIGURATION​

Power Input (configurable, see label on bottom of unit for specified input)​

220-230V 50/60Hz – Use Fuse Type 2A SB 5x20mm (when internal switches are set@220v)
110-115V 50/60Hz – Use Fuse Type 4A SB 5x20mm (when internal switches are set@110v)

Power consumption​

50w

ACCESSORIES:​

Included Accessories​

AC Power Cable x1 (Applicable to North America only)

Remote Control x1 (only with KTE model)

I would think there is no reason to have the higher DC+, 10 amps is a big power draw, almost like a space heater hair dryer draw, you should be just fine at 50w with the non + version.

Hope that helps!

Cheers!!

 

[NYanakiev]

Helps a lot, thank you @iFi audio