iFi audio DC Blocker

iFi audio

*Please check with our online customer service team for stock availability Genuine
  • Your humming transformer is your quaterback
    Got mechanical hum. Deploy the DC Blocker.

    Many systems (amplifiers etc.) have a really annoying mechanical transformer hum (emitted from the transformer itself), especially equipment with toroidal (circular) transformers.

    You can hear it when you place your ear close or next to the chassis.

    This is usually caused by a small amount of DC voltage in the mains which makes its way through to the mains transformer, it will become ‘saturated’ and start to hum like a trooper.

    The DC Blocker is a clever device that you place at the IEC (at the rear power inlet) and as its name implies, it stops DC from getting into the audio mains. Thereby halting hum.

    Cute, Clever
    All the benefits of cutting out annoying hum with no drawbacks. Just deploy at each component.
    • Intelligently block DC voltages from the mains to eliminate transformer hum
    • EMI shielding is retained
    • Equipment Safety is unaffected

    Behind every good component is a DC Blocker
    All the benefits of cutting out annoying hum with no drawbacks. Just deploy at each component
    • 90-240V
    • Maximum rating >10A, continuous current rating 7A
    • Small size, universal application, won’t block any other connectors, sockets, or cables

  • • Low Impedance, High Ripple Current, long life Nichicon electrolytic capacitor
    • For the best AC performance
    • High-performance glass passivated semiconductor
    • High Case Dielectric Strength of 1500VRMS UL Listed
    • Flame resistant IEC socket/connecter/chassis Fireproof polymers UL94-V0

  • Blocks incoming DC

    up to 1,200mV



    Maximum rating

    >10A, continuous rating 7A


    68 x 37 x 32 mm