FiiO Darkside Pro

Low-noise, regulated linear power supply

• Audiophile 75W toroidal transformer
• Support for 12V/15V dual voltage, 3A high current output
• Fully discrete voltage regulation circuit and parallel current amplification outputs with two MOSFETs
• Relay-controlled transformer voltage switching ++ELNA/Rubycon/WIMA capacitors
• Self-resetting overcurrent protection
• Precision potentiometer for fine-tuning the voltage
• Minimalist design in tech family style

Hi-fi amplifier in professional audio quality

75 W O-shaped transformer

Special O-shaped transformer for low-noise audio, oriented silicon steel with toroidal transformer, higher efficiency, lower eddy currents; the coil has no folding angles, the magnetic field is evenly distributed and magnetic leakage is lower; 75 W high-power reserve, easily handles the demand for large dynamic transition current, low-frequency diving is more solid and the size of the sound field is clearly audible.

Fully connected audiophile components

SHINDENGEN rectifier bridge, imported from Japan D15XB60

Low heat generation, high stability, reduces the slight interference caused by current fluctuations in the audio range.

5 imported ELNA capacitors + 7 Rubycon ruby filter capacitors

+2 WIMA film capacitors

Filters out current noise and ensures pure sound.

Single crystal copper silver-plated DC cable

Reduces transmission loss, shields electromagnetic interference, and improves audio detail.

Fully discrete NMOS voltage regulator circuit architecture

Uses a FET (IRFZ34NPBF) with dual parallel output power, low internal resistance, and high current, which ensures strong dynamics and complete detail. Combined with fully discrete error amplification and a high-precision reference source, it achieves stable output power with low noise and high transient response, effectively reducing heat generation.

Vrms ≤ 17 μV (A-weighted)

12 V output noise

Vrms ≤ 30 μV (A-weighted)

15 V output noise

Relay switching power 12 V/15 V

Precise temperature control

The output voltage of the integrated relay switching converter adjusts precisely to the 12 V/15 V output power, resulting in higher energy efficiency and less heating of the devices.

Minimalist aluminum alloy housing

Aesthetics and performance

Continuing the minimalist design of the FiiO K13 family, the one-piece aluminum alloy housing has been thickened, which not only looks uniform but also conveys quality and weight. The solid metal housing can effectively suppress resonance, shield electromagnetic interference, and the grille design can also accelerate heat dissipation, allowing the device to maintain consistent performance. Harmoniously matched to the FiiO desktop ecosystem, order and performance are integrated.

Fine tuning, intelligent monitoring

Precise potentiometer voltage fine tuning

Fine adjustment for individual customization.

Resettable overcurrent protection function

Intelligent protection for carefree listening.

Specifications:

Color: Black/Silver

Size: 188*188*42.3 mm

Weight: approx. 2200 g

AC input voltage: 220~240 V/100~120 V

DC output voltage: 12 V/15 V

DC power supply output current: 0~3 A

DC output interface: GX16-2-core aviation connector

*DARKSIDE PRO is a non-standard aviation connector for Type-C, specially designed for FiiO portable players. It must be purchased separately and is expected to be available in March.

Scope of application:

FiiO K11, K11 R2R, K13 R2R, K15, K19, R9, R7, TT13, K5 Pro series, K7 series, Q7, and all FiiO portable players with Type-C power supply*.

Package contents:

DARKSIDE PRO console

DC cable

AC cable

Spare fuse

Quick start guide