The Pyle Pro PHE400 Mini 2-Channel Hum Eliminatorfrom Pyle Pro PHE400 Mini 2-Channel Hum Eliminatoris designed to completely eliminate 60 Hz AC hum caused by ground loops. It features 1/4" TRS and XLR inputs and outputs on each of its two channels.

AC hum and noise are almost always caused by a loop antenna effect across signal lines between pieces of gear, or by long unbalanced cable runs—since unbalanced lines are more susceptible to picking up electrical noise and RF interference. This unit breaks the ground loop, eliminating the possibility of signal lines picking up AC hum and noise and also converts unbalanced signals to true balanced signals. In addition, the PHE400 automatically translates signal voltages to match the differences in ground potentials.

Removes AC Hum Noise from Audio    XLR and 1/4" I/O on Both Channels    Converts Unbalanced Signal to Balanced    No Signal Loss, Maintains Integrity    Passive Device, No Power Required

Designed to remove AC hum noise

Breaks ground loops

Maintains sonic integrity

Automatically translates signal voltages to match difference in ground potentials
utilizing 11:1 isolation transformers to break loop antenna

Passive device—no power source required

Small footprint case

Related Questions and Answers

Q: 1. Is this compatible with a Mac using Audacity?

A: With USB connection to the computer, this Pyle PMXU63BT mixer is compatible with mac, and will send audio into a software like Audacity, or other DAW programs.

Q: 2. What's the difference between this and the IL-19 (no SS)?

A: The IL-19-SS and IL-19 In-Line Hum Eliminators are both intended for the same purpose and both units are constructed using ABS plastic housing. The difference between the two models is the dynamic structured shielding feature included on the IL-19-SS which can provide a better ground in certain setups that include older racks and cabinets.

Q: 3. Does this unit pass phantom power from a preamp to a mic?

A: This is a passive device that Transformer Couples the Audio Signal. Transformers do not pass DC voltages, so will Not Work with Phantom Power Mics. The Hum that it eliminates refers to 60 Hz Ground Loop problems between equipment.. If you place a separate Phantom Power Supply AFTER the Hum Eliminator, that might work . Or, use only 'Dynamic' microphones instead of ones that require Power. Then, this unit will work fine, as intended.

Q: 4. Can this unit send a signal TO a laptop using bluetooth? The laptop would be used to host a livestream over Zoom.

A: No, the Pyle Pro PMX840BT does not have Bluetooth output. To stream wireless to a Bluetooth enabled device like a laptop, you would need to connect a separate Bluetooth transmitter to the RCA outputs.

Q: 5. What country is this made in? USA or China?

A: According to the information we have, our current inventory's Country of Origin is China. Please be aware this can change over the product's production life without notice.

Q: 6. Will it work for 120hz signals? I have a buzz from my turntable and I have tried almost everything and I'm still getting a buzz

A: This style of buzz eliminator is designed for 50 to 60hz.

Q: 7. My blue tooth indicates a connection but there is no audio. I had audio for about one minute then it dropped off. Any suggestions as to how to get the audio back?

A: Try turning off the mixer for 12 seconds, then turning it back on and attempt the Bluetooth pairing again. Bluetooth signal in general can be interfered with if there are other Bluetooth devices being used in close proximity. If possible, make sure those other devices are off when using Bluetooth on the mixer. If the connection is made and there's still no audio, please make sure the main level is turned up on the mixer so audio will pass to your speakers. If the problem persists, please give Pyle Pro a call at 800-444-5671.

Q: 8. I have been running 2 passive speakers with this unit with no problem. I hooked up 2 powered speakers to it today and it shut off and will not come back on. What could be the problem?

A: If you want to output to active speakers, you need to use the RCA stereo outputs going into those kinds of speakers. The 1/4'' speaker outputs on the back are made for compatibility with passive speakers only.

Q: 9. The echo function on my Pyle Pro PMX840BT mixer has stopped working. How to fix it?

A: For the best troubleshooting and repair assistance on your technical issue, we recommend contacting Pyle directly. https://pyleusa.com/pages/contacts

Q: 10. Will this device transform isolation between balanced line output and unbalanced input?

A: Yes. In addition to reducing hum and noise, the Sescom IL-19-SS In-Line Audio Hum Eliminator will provide transformer isolation between a balanced line level output and an unbalanced line level input.