EBTech 2-Channel Hum Eliminator for A/C audio systems - guitar, bass, recording

ART - Clean Box 2 Hum Eliminator Dual Channel Isolation Transformer 1/4" TS-TRS

Ebtech HE-2-XLR 2-Channel Hum Eliminator

EBTECH HUM ELIMINATOR 2 CHANNEL (NYG104)

ART - Clean Box 2 Hum Eliminator Dual Channel Isolation Transformer 1/4" TS-TRS

ART DTI 2-channel Hum Eliminator

Pyle PHE400 Mini Hum Eliminator 2-Channel Compact Noise Filter

New Pyle PHE400 Hum Noise Eliminator 2-Channel Box W/ 1/4" TRS Phone XLR Jacks