AIYIMA H4 HIFI Portable Headphone Amplifier USB DAC AMP ES9039Q2M PCM768 DSD512 4.4mm Balanced/3.5mm Jack Output OLED Display

Feature

1. Equipped with the flagship ES9039Q2M chip, supports high-resolution audio decoding up to PCM 32bit/768kHz and DSD512.

2.With gain adjustment, 8 PCM filter options, and High/Low two-level gain, can be tailored to meet the needs of both music enthusiasts and gamers.

3.Features both 3.5mm single-ended and 4.4mm balanced outputs. Balanced output provides up to 240mW, driving various headphones with ease.

4.UAC 1.0 mode compatible with Nintendo Switch and PS5 for high-quality audio.

*Supports up to 16bit/44.1kHz or 48kHz input in this mode. Activate by holding the M button while powering on.

5.OLED display with intuitive controls,In HID mode, control music playback (play/pause, skip) directly from the device without touching your phone.Built-in volume memory retains your last volume setting across different audio sources, preventing sudden volume changes.

*Volume control is temporarily unavailable in HID mode.

Specifications

DAC Chip: ESS ES9039Q2M

OP AMP chip: RT6863*2

Max Sampling Rate:

PCM 768kHz/32bit DSD512  DSD512 (Dop)

S/PDIF mode: PCM 384kHz  Dop128

Support system: Android/IOS/Windows10, 11/MacOS, etc.

Supported devices: mobile phones, tablets, computers, players, etc.

USB mode: USB1.0/USB2.0

Headphone output: 3.5mm Single-Ended, 4.4mm Balanced

Headphone impedance: 16-300Ω

3.5mm single-ended parameters:

Output power: 125mW@32RL=32Ω (mono)

SNR: 122dB@RL=32Ω100mW

Distortion: <0.00071%@RL=32Ω100mW

Dynamic range: 125dB@RL=32Ω100mW

Floor noise: <1.5μVrms@RL=600Ω

4.4mm balance end parameters:

Output power: 240mW@32RL=32Ω (mono)

SNR: 120dB@RL=32Ω100mW

Distortion: <0.00056%@RL=32Ω100mW

Dynamic range: 123dB@RL=32Ω100mW

Floor noise: <1.9μVrms@RL=600Ω

Product size: 56x23x12.5mm

Packing size: 145x85x33mm

Product weight(without wire): 22.5g

Including package weight: 145g