Fosi Audio PH05

Download PDFFree PDF. The Save button below keeps a bookmark and private notes in your account.

Fosi Audio PH05 5-Channel Headphone Splitter Amplifier User Manual

Model: PH05 | Brand: Fosi Audio

1. Introduction

The Fosi Audio PH05 is a versatile one-in-five-out stereo headphone splitter/amplifier designed for professional audio monitoring and distribution systems. It allows you to connect up to five sets of headphones simultaneously, adapting to various audio-sharing and distribution scenarios. This manual provides detailed instructions for setting up, operating, and maintaining your PH05 amplifier.

Fosi Audio PH05 5-Channel Headphone Splitter Amplifier

Figure 1: Fosi Audio PH05 5-Channel Headphone Splitter Amplifier.

2. What's in the Box?

  • PH05 Headphone Splitter/Amplifier
  • Power Adapter (DC 12V)
  • 3.5mm AUX Cable
  • User Manual (this document)
PH05 Headphone Splitter/Amplifier with dimensions

Figure 2: PH05 Headphone Splitter/Amplifier.

Power Adapter for Fosi Audio PH05

Figure 3: Included Power Adapter.

3.5mm AUX Cable

Figure 4: Included 3.5mm AUX Cable.

3. Product Overview

The Fosi Audio PH05 features a user-friendly design with intuitive controls and clear labeling for easy operation.

Front Panel Controls and Indicators:

  • CH1-CH5 Volume Knobs: Independent level control for each of the five headphone output channels.
  • Master Volume Knob (VOL): Controls the overall output volume for all channels.
  • Power/Mute Button: Press to mute/unmute audio. Long press to power on/off the device.
  • Power/Mute Indicator Light: Indicates power status and mute status.

Rear Panel Connections:

  • INPUT (3.5mm AUX): Audio input jack for connecting your source device.
  • Ω1-Ω5 (3.5mm Headphone Outputs): Five independent 3.5mm headphone output jacks.
  • DC-12V: Power input jack for the included 12V power adapter.
Fosi Audio PH05 Product Overview showing controls and ports

Figure 5: Detailed view of PH05 controls and ports.

4. Setup

  1. Connect Audio Source: Use the included 3.5mm AUX cable to connect your audio source (e.g., smartphone, tablet, computer, mixer) to the INPUT jack on the rear panel of the PH05.
  2. Connect Headphones: Plug your headphones or IEMs into any of the five Ω1-Ω5 output jacks on the rear panel. You can connect up to five pairs simultaneously.
  3. Connect Power: Insert the DC 12V power adapter into the DC-12V power input jack on the rear panel, then plug the adapter into a standard wall outlet.
  4. Power On: Long press the Power/Mute button on the front panel to power on the device. The indicator light will illuminate.
Fosi Audio PH05 connected to headphones and an audio source

Figure 6: Example setup with multiple headphones connected.

5. Operating Instructions

  1. Adjust Master Volume: Rotate the large Master Volume Knob (VOL) to set the overall listening level for all connected headphones. Start with a low volume and gradually increase it to a comfortable level.
  2. Adjust Individual Channel Volume: Use the individual CH1-CH5 Volume Knobs to fine-tune the volume for each connected headphone. This allows for personalized listening levels for each user.
  3. Mute/Unmute: Short press the Power/Mute button to instantly mute or unmute all audio output. The indicator light will change to reflect the mute status.
  4. Power Off: Long press the Power/Mute button to power off the device when not in use.
Close-up of Fosi Audio PH05 controls

Figure 7: User-friendly control design with individual and master volume knobs.

Usage Scenarios:

The PH05 is ideal for various applications:

  • Music Studio Production: Monitor audio with multiple headphones during recording or mixing sessions.
  • Podcasting: Allow multiple participants to monitor audio during live recordings.
  • Classroom Teaching: Provide individual audio feeds for students in a learning environment.
  • Audio Sharing: Share audio from a single source with friends or family, such as watching TV or listening to music.
People using Fosi Audio PH05 for podcast monitoring, classroom teaching, elderly assistance, and turntable preamp

Figure 8: PH05 adapting to various listening scenarios.

Official Product Video:

Video 1: Overview of the Fosi Audio PH05 5-Channel Headphone Splitter Amplifier, demonstrating its features and applications.

6. Maintenance

  • Cleaning: Use a soft, dry cloth to clean the exterior of the device. Avoid using harsh chemicals or abrasive cleaners.
  • Storage: When not in use for extended periods, store the PH05 in a cool, dry place away from direct sunlight and extreme temperatures.
  • Handling: Handle the device with care. Avoid dropping it or subjecting it to strong impacts.

7. Troubleshooting

ProblemPossible CauseSolution
No sound output
  • Power adapter not connected or faulty.
  • PH05 is muted.
  • Volume knobs are set too low.
  • Audio source not connected or playing.
  • Headphones not properly connected or faulty.
  • Ensure power adapter is securely connected and plugged in.
  • Short press the Mute button to unmute.
  • Increase Master Volume and individual channel volumes.
  • Verify audio source connection and playback.
  • Check headphone connections and test with another pair.
Distorted sound
  • Volume set too high (clipping).
  • Poor quality audio source.
  • Faulty cables.
  • Reduce Master Volume and individual channel volumes.
  • Try a different audio source.
  • Replace audio cables.
Humming or buzzing noise
  • Ground loop issue.
  • Interference from other electronic devices.
  • Faulty power supply.
  • Try plugging the PH05 into a different power outlet.
  • Move the PH05 away from other electronic devices.
  • Contact Fosi Audio support if the issue persists.

8. Specifications

FeatureDetail
Product Dimensions4.61 x 3.11 x 1.96 inches (117 x 79 x 50 mm)
Item Weight1.1 pounds (340g)
Output PowerUp to 310mW @ 32Ω per channel (x5)
Compatible Headphone Impedance16-300 Ohm
Signal-to-Noise Ratio (SNR)105dB
Total Harmonic Distortion (THD)0.001%
Noise Floor25µV
Power InputDC 12V
ManufacturerFosi Audio
Fosi Audio PH05 with technical specifications like SNR, THD, Noise Floor

Figure 9: PH05 demonstrating superior sound performance with low noise and distortion.

9. Warranty & Support

Fosi Audio products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please visit the official Fosi Audio website or contact their customer service directly.

Official Website: www.fosiaudio.com

You may also find additional support and FAQs on the product page where you purchased the item.

© 2024 Fosi Audio. All rights reserved.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.