[🎶SG] Audirect Beam 4 Portable DAC Headphone Amplifier

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Audirect Beam 4 Portable DAC Headphone Amplifier
ESS9281 AC PRO, 3.5mm + 4.4mm Dual Output

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Descriptions:

> Premium ESS Sabre Decoding Chipset
> In order to deliver top-quality audio performance, Audirect has equipped the Beam 4 with a high-performance DAC chipset from ESS Sabre Technologies. The device houses ES9281AC Pro DAC. It is a 32-Bit DAC chipset that supports decoding for advanced 32-Bit/768kHz PCM and native DSD512 audio signals.

> Self-Developed Battery Compensation and Power Management System
> Audirect Beam 4 houses a large 1200mAh battery. It ensures a stable power supply to the internal circuitry including the decoder host, headphone output part, etc. Stable Power Supply greatly enhances the sound experience of the user.

> Precisely Balanced Tuning
> Beam 4 has been professionally adjusted to deliver a properly Balanced three-frequency response with the connected earphones. The full frequency band has a certain thickness with amazing density, overall delivering a balanced, clear-sounding DAC/AMP.

> Multi-Color LED Indicator Light
> Audirect Beam 4 features a multicolor indicator-led light that glows in different colors based on the active file bitrate. It glows in red for simple PCM up to 48kHz bitrate, Blue for 384kHz PCM bitrate, Yellow for denoting DoP at work, and White shows native DSD decoding. There’s also a battery indicator light this light starts flashing red when the battery is too low.

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Specifications:

> Decoding Chip: ESS9281 AC PRO
> Crystal Oscillator: three(femtosecond-level)
> Output Interface: 3.5mm SE + 4.4mm BAL
> Frequency Response: 0.032dB@20Hz-40kHz
> 4.4mm Output Power: 16Ω-110mW / 32Ω-230mW / 600Ω-27.78mW
> 3.5mm Output Power: 16Ω-141mW / 32Ω-122mW / 600Ω-7mW
> Signal-To-Noise Ratio (SNR): -119dB
> Distortion + Noise: 0.0003%
> Sampling Rate: Up to 32-bit/768kHz
> Support DSD Format: Up to DSD512
> Battery Capacity: 1200mAh