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Fosi AudioPH04 4 Channel Headphone Amplifier Stereo Audio Amp with 12V 1.5A Power Adapter Ultra-Compact Portable Headphone Splitter for Studio and Stage

Fosi AudioPH04 4 Channel Headphone Amplifier Stereo Audio Amp with 12V 1.5A Power Adapter Ultra-Compact Portable Headphone Splitter for Studio and Stage

Q: Will this device switch microphone inputs as well? I play to connect this to a laptop to switch between headphone/mic inputs.

You should look into mixers? Mixers have multiple inputs and one output for speaker. It has a jack for headphone.

Q: Does have to plug into the tv or use Bluetooth

You plug the speaker output on your TV or computer to the Input then you have the availability to plug in external speakers or headphones.

Q: My speakers and headphones make pop-noise whenever turning it on, Can I just leave it on with the lowest volume when not using it?

The reason for the popping noise when the amplifier is turned on is that it does not have a capacitor in line with the power supply. The amplifier produces sound through electrical current, so the initial surge of electricity when the device is turned on, causes a kind of signal to be forced through to the headphones. In theory, such a thing could cause damage to a speaker, if the "signal" overloads the power ratings of the speakers, but in practice, this is not very likely, especially for an amplifier like this one. The bigger issue, to my mind, is that if you're wearing headphones and the volume is turned up, you may expose your ears to a rather loud pop, which could be harmful. So, yes, you could avoid the problem by not turning the unit off but only turning the volume down. I would still recommend, however, the step of putting your headphones on only after you have plugged them in, and if you do turn the amplifier off, putting your headphones on only after you have turned the unit back on.

Q: I bought 8 of these and we have tried several. And we have tried using difference stereo cables. No matter what we do left side only??

Mine works fine. Please check the source, sometimes happens that there is the problem with the setup. Just put some basic headphones with volume and check that the source is sounding fine, complete

Product ID: 386071357

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Details

Brand
Fosi Audio
Colour
red
Ear placement
Over Ear
Form factor
In Ear
Headphone jack
6.35 mm Jack

⚡Ultra-compact design

🎧4 channels

🔊High-power output

Description

🎶 Elevate Your Audio Game with Fosi!

COMPLETE PACKAGE - Includes everything you need for seamless setup and operation.
UNLEASH THE SOUND - Experience high-fidelity audio with 4 independent channels.
COMPACT POWERHOUSE - Easily portable design for studio and stage use.
TAILORED LISTENING - Each listener controls their own volume for a personalized experience.
PROFESSIONAL QUALITY - Ultra-low-noise op amps ensure pristine sound at any volume.

The Fosi Audio PH04 is a 4-channel headphone amplifier designed for studio and stage applications, allowing up to four users to enjoy high-quality audio with independent volume control. Its ultra-compact design and professional-grade components make it an essential tool for musicians and audio professionals.

Have a Question? See What Others Asked

Will this device switch microphone inputs as well? I play to connect this to a laptop to switch between headphone/mic inputs.

Does have to plug into the tv or use Bluetooth

My speakers and headphones make pop-noise whenever turning it on, Can I just leave it on with the lowest volume when not using it?

I bought 8 of these and we have tried several. And we have tried using difference stereo cables. No matter what we do left side only??

Reviews

A**R

Fosi PH04

Its an awesome product from Fosi, connect and control 4 microphone indepenently, used this product to connect my senheiser headphone

10.01.2023

S**S

Very bad.

Stopped working after 2 days

27.10.2023

A**R

Small and reliable device

I am using it for translation services for the events being conducted. So, at a time, four people can connect their headphones and listen to the translator's translation. It is not complicated, and it is an effortless setup. Other expensive options are there which are wireless, however for my need, it’s perfect.

4.09.2023