“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:
CleanBOX II Applications:
Frequency Response: 10Hz – 50kHz, +/- .5dB @ +4dBu
THD: .01% Typical @ 1kHz, +18dBu, <.05% @ 100Hz, +24 dBu
Insertion Loss: .4dB @ 100k Ohm Load, 5.5dB @ 600 Ohm 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)