Details information of Douk Audio A5 PRO:

The Douk Audio A5 PRO is a compact, high-power Class D desktop integrated amplifier and headphone amplifier designed around the high-performance Texas Instruments TPA3255 chip. It builds upon the original A5 model by integrating upgraded Bluetooth connectivity, independent tone controls, and a dedicated front-panel headphone output.

Key Specifications & Architecture:

• Core Amplifier Chip: Texas Instruments TPA3255 Class-D chip paired with NE5532 operational amplifiers (OPAs).

• Maximum Output Power: Up to 300W × 2 into a 4Ω load (when utilizing a high-voltage 48V power supply).

• Headphone Output: 500mW @ 32Ω capable of driving headphones with an impedance range of 16–600Ω via a 3.5mm front jack.

• Audio Performance Metrics: Total Harmonic Distortion plus Noise (THD+N) of 0.003%, a Signal-to-Noise Ratio (SNR) ≥113dB, and a flat frequency response from 20Hz to 20KHz (±1dB).

• Advanced Circuit Engineering: Utilizes Post-Filter Feedback (PFFB) technology and a 4-layer immersion gold PCB to reduce distortion, optimize signal integrity, and efficiently manage thermal dissipation.

 

Features:

• Upgraded Features for Versatile Use: The A5 PRO builds on the strengths of the A5, featuring upgraded Bluetooth 5.1 connectivity with a reset button, bass and treble knobs for precise tone adjustments, and a headphone output. It delivers clear, powerful audio, perfect for diverse uses from bedroom movies to desktop setups.

• Easy Customization with Plug-and-Play Op-Amps: Upgrade your sound effortlessly! Douk Audio A5 PRO includes a tempered glass access panel for quick op-amp replacements, allowing audiophiles to tailor sound profiles without disassembling the unit.

• PFFB Technology and High-Performance PCB: Built with Post-Filter Feedback technology circuit and a 4-layer immersion gold PCB, this digital amplifier reduces distortion and improves frequency response. Enjoy unparalleled audio precision, enhanced signal integrity, and effective heat management.

• Stunning Design for Living Rooms and Studios: Sleek and modern, the compact power amp is equipped with a transparent panel and adjustable internal LED lighting. Multiple color options create a futuristic look, adding sophistication to your home audio setup or studio.

• Impressive Power Output: The A5 PRO delivers a maximum output of 300W×2 with TPA3255, perfect for driving high-power systems, and 500mW@32Ω for detailed, dynamic headphone listening. With premium components like Rubycon/WIMA capacitors, it ensures optimal performance with bookshelf speakers and other devices.

 

 

Parameters:

• Brand: Douk Audio

• Model: A5 PRO

• Audio input: Bluetooth / Stereo RCA

• Audio output: Banana speaker jacks / AUX / 3.5mm headphone jack

• Headphone output power: 500mW/32Ω

• Matched headphone impedance: 16-600Ω

• Max. output power: 300W*2 (4Ω)

• Matched speaker impedance: 4-8Ω

• Frequency response: 20Hz-20KHz (±1dB)

• THD+N: 0.003%

• SNR: ≥113dB

• Bass/treble range: ±6dB

• Bluetooth version: 5.1

• RCA input sensitivity: 2V

• AUX rated output level: 3.7V

• Working voltage: DC 24-48V

• Dimensions (W*D*H): 130*112*33mm / 5.12*4.41*1.30in

• Package dimensions (W*D*H): 265*240*65mm / 10.43*9.45*2.56in

• Net weight: 525g / 1.16lb

• Package weight: 1.2kg / 2.65lb

Power Output Table of Douk Audio A5 PRO

48V/5A: 120W+120W @ 4Ω

48V/10A: 250W+250W @ 4Ω

 

Packing List:

• A5 Amplifier ×1

• DC 32V/5A Power Adapter(Optional) ×1

• DC 48V/5A Power Adapter(Optional) ×1

• User Manual ×1