Product description

HA400 Headphone Amplifier - Elevate Your Audio Sharing Experience

Introducing the HA400 4 - Channel Metal Stereo Headphone Amplifier—your ultimate solution for seamless, high - fidelity audio sharing in any scenario. Whether you’re in a studio fine - tuning tracks, on stage delivering a performance, or gathered with friends for a gaming marathon, this amplifier transforms how you experience and share sound.

Technical Specifications

  • Connectivity: Features 1/4" TRS audio input (for connecting signal sources) and four 1/4" TRS headphone outputs.
  • Headphone Compatibility: Optimized for headphones with 32 - 100 Ω impedance and 50mm drivers.
  • Output Capacity: Delivers a maximum output level of approximately 40mA at 100Ω, capable of powering up to 4 pairs of headphones simultaneously.
  • Operational Chip: Equipped with the low - noise, high - fidelity, and high - gain JRC4580 operational amplifier chip for superior audio quality.
  • Power Supply: Includes a 12V 1A DC power adapter.
  • Dimensions: Ultra - compact size of 90×55×40mm, similar to a cassette tape for easy portability.

How to Use

  1. Power Up: Connect the included 12V DC power adapter to the amplifier and a power source. The indicator light will illuminate when powered on.
  2. Input Connection: Plug your audio source (such as a PC, guitar, or mixer) into the 1/4" TRS input port.
  3. Headphone Setup: Connect up to four pairs of headphones to the respective 1/4" TRS output ports (labeled 1–4).
  4. Volume Control: Use the individual “LEVEL” knobs (LEVEL 1–LEVEL 4) to adjust the volume for each headphone independently.
  • 4 - Channel Independent Control: When sharing an audio source with friends (whether for recording, monitoring, or casual listening), each person can adjust their headphone volume without interfering with others. No more volume disputes!
  • Low - Noise JRC4580 Chip: This upgraded operational amplifier chip enhances output power while refining sound quality and timbre, ensuring every note and beat is delivered with clarity and richness.
  • Ultra Compact & Portable: With its metal construction and cassette - tape - sized design, you can effortlessly take it to studios, stages, outdoor gigs, or even use it for home karaoke and gaming sessions.
  • Versatile Applications: Ideal for studio recording, live stage performances, small concerts, home/ outdoor karaoke, conference speeches, band rehearsals, and immersive gaming with friends.

Upgrade your audio setup today with the HA400—where powerful performance meets unparalleled portability.