4 Channel Headphone Amplifier

Record sound sample:

Specification :

4 Channel Headphone Amplifier | Built‑in Rechargeable Lithium Battery | Portable High‑Power Amplifier with Professional Audio Chip

This is a DIY 4‑channel headphone amplifier designed independently, featuring a built‑in rechargeable lithium battery and four professional headphone amplifier chips from Chipstar. Each channel provides 130mW of drive power for 160‑ohm headphones (i.e., 260mW per stereo pair).

Features:
1. Built‑in click‑suppression circuit in the chip
2. Built‑in boost pump allows normal operation at low voltage (2V)
3. High 86dB power‑supply rejection ratio (lower noise floor)
4. Short‑circuit and over‑temperature protection, operational in environments up to 85°C
5. Ultra‑low operating current of 20mA for high power efficiency
6. One audio input, four amplified outputs, four independent volume controls
7. Sealed volume potentiometer for extended lifespan
8. Hand‑assembled through‑hole components for superior sound quality
9. Type‑C charging port
10. Dimensions: 12cm (L) × 7cm (W) × 2.8cm (H), weight: 150g

Application Scenarios:
– Multi‑person music listening
– Multi‑person monitoring in recording studios
– Outdoor recording monitoring
– Multi‑channel audio signal distribution
– Output can be connected to speaker amplifiers

How It Works:
Audio signals (from phones, computers, audio interfaces, players, or mixer headphone outputs) are fed into the amplifier’s green input port. The signal passes through four independent volume controls before entering the power‑amplification chips, where it is amplified and output through the four rear headphone jacks to drive headphones.

Component Quality:
– Aluminum alloy casing
– High‑grade input capacitors
– Copper‑pin resistors
– Professional headphone power‑amplification chips (unlike common op‑amp chips on the market, which lack comparable sound quality and power)

Advantages:
– Continuous playback with all four channels in use: battery lasts about 24 hours
– With two channels in use: battery lasts about 48 hours
– Can be used while charging with no audible hum or noise
– Zero noise floor when idle—no pink noise even at maximum volume
– Easily drives 150Ω, 300Ω, 800Ω, and even higher‑impedance headphones
– Compact size outperforms many larger amplifiers in output power
– Compact dimensions: 12cm (L) × 7cm (W) × 2.8cm (H), weight: 150g

Packing:

Finished install earphone Amplifier with power adapter

Application:

Professional Studio Vocal Recording, Home Studio & Project Recording, Live Streaming & Podcasting, Voice-Over & Audiobook Narration, Broadcast & Radio Broadcasting, Film & TV Dialogue/ADR Recording, Music Instrument Miking (Acoustic Guitar, Piano, etc.), Field Recording & Location Sound, YouTube & Content Creation, Karaoke & Home Singing Practice, Conference & Interview Recording, Theater & Stage Performance, Educational & Online Teaching, Mobile Recording (with Portable Interfaces), Demo & Songwriting Sessions

Click here to order “Microphone“.

Click here to order “48v Phantom Power“.

Click here to order “Shock Mount“

Welcome to a store built on 15 years of audio engineering expertise. Every product—from our capsules to our circuits—is designed, tested, and perfected by me, a senior engineer, to deliver pro-level sound you can trust. Ready for more? Explore our full range or reach out for custom solutions—we’re here to help you sound better.