Douk Audio D2-PRO 35W Linear Power Supply

Douk Audio D2-PRO 35W Linear Power Supply with Dual DC 12V OUT

 

Features:

• Cleaner Linear Power Upgrade: Ordinary switching adapters can introduce ripple, electrical noise, and interference into sensitive audio gear. As a linear power supply, the D2-PRO helps create a darker background, smoother highs, and cleaner detail for a more refined listening experience.
• 28μV Ultra-Low Ripple: Ripple noise is measured at only 28μV RMS under no-load conditions, giving sensitive audio circuits a cleaner power foundation. By reducing power-related noise at the source, it supports steadier imaging, cleaner dynamics, and more natural detail.
• Low-Noise Power Architecture: A sealed toroidal transformer, EMI suppression circuit, high-speed rectifier, large-capacity matrix filtering, and LDO regulator work together to isolate grid interference, smooth DC output, and deliver stable, well-regulated DC power.
• 35W Dual DC Output: With up to 35W output power and 2.5A current capacity, the D2-PRO can run one or two compatible devices from the same clean regulated source. Dual DC outputs help create a more consistent low-noise power setup for compact HiFi systems.
• Made for HiFi Audio Systems: Designed for 12V DACs, preamps, headphone amps, streamers, digital interfaces, audio switches, and network switches. The aluminum chassis helps improve heat dissipation and reduce external interference for stable daily use.

 

 

Parameters:

• Brand: Douk Audio
• Model: D2 PRO
• Output Interface: Dual DC Outputs
• Output Voltage: DC 12V
• Max. Output Current: 2.5A
• Power Capacity: 35W
• Ripple Noise: (No load) 28μV RMS
• Fuse Replacement: Supported, 5mm × 20mm, 1A
• DC Output Connector: 5.5 × 2.5 mm, positive inside and negative outside, compatible with 5.5 × 2.1 mm plugs
• Input Voltage: AC 110V–120V / AC 220V–240V
• Dimensions (W × D × H): 115 × 161 × 62 mm / 4.53 × 6.34 × 2.44 in
• Net Weight: 1.33 kg / 2.93 lb
• Package Weight: 2.0 kg / 4.41 lb

 

Packing List:

• 1* D2 PRO
• 1* DC Cable
• 1* Power Cable

 

User Manual/FAQs:

Q: The D2-PRO have two output terminals. Can both terminals be used simultaneously at full rated current?
A: No. You can connect two output devices at the same time, but the total curent drawn from both outputs must not exceed the rated output current.

Q: The DC output jacks of D2-PRO are 5.5mm/2.5mm, and my device's power jack is 5.5mm/2.1mm. Are they compatible?
A: Yes.

Q: Is the output voltage of the D2-PRO adjustable?
A: The output voltage is typically fixed and can only be fine-tuned within about ±0.5V. Normally no adjustment is required.

Q: My device requires a 12V / 1A power supply. Can I safely use the D2-PRO (12V / 2.5A)?
A: Yes. The 2.5A rating indicates the maximum available current. Your device will only draw the current it requires.

Q: Why do the D2-PRO generate more heat than switching power supplies? Is it safe?
A: It is normal. Linear power supplies operate at lower efficiency, so more energy is converted into heat. The D2-PRO is safe when used within rated load limits.