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Douk Audio 2 Channel Bluetooth Amp: HiFi Stereo Amplifier | 300W×2 TPA3255 | Class D PFFB | Bass Treble Control | Headphone Out for Home Theater, Bookshelf Speakers (48V PSU) — Open-Box, 23% Off
Brand: Douk Audio
Condition: Used - VeryGood
$11199
$14559
-23% Save $3360
Updated: 5 days ago
Description
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.
Warm tips:
1. The A5 PRO with 2PCS pluggable NE5532 op-amps, can be upgraded by dual op-amps like 2134/2604/5532/2068/muse02 etc.
2. The speaker output, AUX and 3.5mm headphone jack output can work at the same time, and the volume/treble/bass of the three outputs are controlled simultaneously.
Features:
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
1. The A5 PRO with 2PCS pluggable NE5532 op-amps, can be upgraded by dual op-amps like 2134/2604/5532/2068/muse02 etc.
2. The speaker output, AUX and 3.5mm headphone jack output can work at the same time, and the volume/treble/bass of the three outputs are controlled simultaneously.
Features:
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
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0f2m9p24c
- Model:
- A5 PRO 48V
- Country:
- US
- ASIN:
- B0F2M9P24C
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $34 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Douk Audio products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.
