80W Toroidal Transformer

Custom pure copper toroidal transformer with up to 100W peak output ensures stable power delivery, even with three devices connected.

Nippon Chemi-Con Capacitors

Premium capacitors help minimize ripple and noise, with ripple as low as 0.1mV.

High-Reliability Rectifier

A GBU806 rectifier bridge rated at 600V/8A ensures fast, stable AC-to-DC power conversion.

4-Core Regulation

Powered by three LM1085IT and one ST78M05 linear regulators from Texas Instruments.

Product details

Description
  • Pro Splitter Amp: The PH05 is a versatile one-in-five-out stereo headphone splitter/amplifier, allowing you to connect up to five sets of headphones simultaneously, adapting to multiple audio-sharing and distribution scenarios. Whether for professional music studio production, podcasting, teaching, or everyday use like seniors watching TV, it will serve as your excellent companion.
  • Independent Amplification: Each of the five channels can independently output power up to 310mW@32Ω, perfectly compatible with a variety of monitor headphones and IEMs with impedance ranging from 16 to 300 ohms, providing flexible audio sharing. PH05 is an upgrade model of PH04 which offers one more channel and higher power output.
  • User-Friendly Control: Equipped with independent level control knobs for each channel, ensuring that adjustments made to one channel do not affect others, allowing personalized volume settings for each headphone. Additionally, features a large-diameter master volume control and a one-touch mute button, greatly enhancing ease of use.
  • Outstanding Performance: In addition to delivering robust power output, the PH05 boasts an advanced circuitry design internally, ensuring pristine sound. With an SNR of up to 105dB, THD as low as 0.001%, and noise floor as low as 25μV, it guarantees exceptional audio fidelity.
  • Substantial & Compact: The perfect combination of all-aluminum alloy solid build, exquisite appearance, anti-slip foot pads, and greater stability. Experience the superior quality in every touch, complemented by the peace of mind that comes with Fosi Audio's 24-month warranty.
Specifications

Power Input
AC: 115V / 230V
Note:
115V setting supports 100–120V input
230V setting supports 220–240V input
Power Output
DC 1: 12V / 15V (Rated Power: 20W)
DC 2: 12V / 5V (Rated Power: 15W)
USB: 5V / 1A (Rated Power: 5W)
Operating Temperature
-20 ~ 40°C (-4°F ~ 104°F)
Temperature Rise Test
Temperature rise of 25°C (77°F) at full load

What‘s in the box?
  • Fosi Audio PSU20*1
  • 1.2m (47.2 in) DC-DC Power Cable*1
  • 0.3m (11.8 in) DC-DC Power Cable*1
  • User Manual*1
  • AC Power Cord*1