FiiO Darkside Pro Silver

The FiiO DARKSIDE PRO is a low-noise, regulated linear power supply designed for HiFi audio equipment. It features a 75 W O-shaped transformer and a fully discrete voltage regulation circuit, delivering selectable 12 V or 15 V DC output at up to 3 A.

The power supply uses a Shindengen rectifier bridge, ELNA and Rubycon filter capacitors, and WIMA film capacitors to help reduce power-supply noise. Its NMOS voltage regulator architecture uses parallel MOSFET outputs for high current capability, low output impedance and stable power delivery.

A relay-controlled switching system selects between 12 V and 15 V output. A precision potentiometer allows fine voltage adjustment, while resettable overcurrent protection helps protect connected equipment. The unit also features a single-crystal copper cable with silver plating and shielding against electromagnetic interference.

The minimalist aluminium alloy enclosure follows the design language of the FiiO K13 family. Its solid construction helps suppress resonance and electromagnetic interference, while the ventilation grille supports heat dissipation.

The DARKSIDE PRO is compatible with a range of FiiO desktop audio products and portable players using USB-C power. Please check the required voltage, current and connector compatibility before connecting a device. The dedicated aviation-style Type-C connector for compatible FiiO portable players is sold separately.

Features
75 W O-shaped transformer
Selectable 12 V / 15 V DC output
Output current up to 3 A
Fully discrete NMOS voltage regulation circuit
Shindengen rectifier bridge
ELNA, Rubycon and WIMA capacitors
Relay-controlled voltage switching
Precision potentiometer for voltage fine-tuning
Resettable overcurrent protection
Single-crystal copper, silver-plated DC cable
Aluminium alloy enclosure

Specifications
AC input voltage: 100–120 V / 220–240 V
DC output voltage: 12 V / 15 V
DC output current: 0–3 A
DC output connector: 2-pin GX16 aviation connector
Output noise, 12 V: ≤ 17 μV (A-weighted)
Output noise, 15 V: ≤ 30 μV (A-weighted)
Colours: Black / Silver

Compatibility
FiiO K11
FiiO K11 R2R
FiiO K13 R2R
FiiO K15
FiiO K19
FiiO R9
FiiO R7
FiiO TT13
FiiO K5 Pro series
FiiO K7 series
FiiO Q7
FiiO portable players with USB-C power supply, using the separately sold dedicated connector

Dimensions & Weight
Dimensions: 18.8 × 18.8 × 4.23 cm
Weight: Approx. 2.2 kg

In The Box
FiiO DARKSIDE PRO power supply
DC cable
AC power cable
Replacement fuse
Quick Start Guide