Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.
Ask about our new Economy International Shipping Options.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers

Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

ART CleanBOX II Hum Eliminator
    Questions? Ask a Markertek Expert:
    800-522-2025 Email

    ART CleanBOX II Hum Eliminator

    Item #: ART-CLEANBOX-2   •   MFG #: CLEANBOX-2


    List Price:$65.00
    Our Price:$55.00

    free ship
    Availability: Usually ships in 3-10 business days
    This item is currently out of stock and will ship the minute we receive it – normally 3-10 business days. Need it sooner? Call 800-522-2025 and we'll make it happen,or email Customer Service for expedited delivery options. Certain Non-Stock Items Valued over $50.00 may Ship FREE UPS GROUND in the Continental US. Multiple quantities of the same non-Stock Item Valued below $50.00 may be ordered to meet the $50 minimum order requirement to qualify for Free UPS Ground Freight. This offer does not apply to certain freight-intensive or hazardous items. Certain restrictions may apply.
    • Special Order Item: non-cancelable, non-returnable, non-refundable.



    "Hum" in an audio system is often caused by loop effects which act like antennas. These loops can easily pick up a 60 Hz (or higher harmonics) hum transmitted by electrical wiring. Typically, these loops are connected via grounds, more commonly called "ground loops". The safest way to eliminate unwanted noise is with the CleanBOX II. Some examples of Ground Loops:

    -The power ground of a synthesizer, connected to the signal ground of the synth, into a mixer's ground, then into a mixer's power ground.
    -The signal ground of a send effect (reverb, delay) into a mixer, and the connecting power grounds of the mixer and the unit.
    -The power ground of a guitar amplifier, connected to a signal processor which has a second guitar amplifier on the other channel, and then the second guitar amp's power ground.

    The CleanBOX II easily removes ground loops without any signal degradation.

    • Specifications

      • Frequency Response: 10Hz - 50kHz, +/- .5dB @ +4dBu
      • THD: .01% Typical @ 1kHz, +18dBu, <.05% @ 100Hz, +24 dBu
      • Insertion Loss: .4dB @ 100kOhm Load, 5.5dB @ 600Ohm Load
      • Connections: 1/4" TRS balanced/unbalanced jacks
      • Power: Passive
      • Dimensions: 4.5 x 2.875 x 1.5 inches (114mm x 73mm x 38mm)
      • Weight: .9 lbs (.4kg)


    Continue Shopping View Cart