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Compact black linear power supply unit, 11 by 5.2 cm, silver accents

Topping Inc.

Topping P50 Linear Power Supply 15 V 1 A 5 V 1 A 0.9 A 0.8 A

SKU CH-4C8V-5RPWN

Linear power supply delivering 15 V at 1 A and 5 V at 1 A via DC and USB outputs with toroidal transformer and ultra-low-noise regulators

  • TypeLinear Power Supply
  • ColorBlack
  • Ultra-low noise output for cleaner audio
  • Toroidal transformer reduces electromagnetic interference
  • Three TPS7A4700 linear regulators ensure precise voltage
  • High capacitor reserves deliver stable power
  • Switchable 115 V / 230 V input matches local mains

Low-Noise Linear Power Supply

The Topping P50 is a linear power supply designed to deliver ultra-low-noise DC power to compatible audio components. It provides regulated outputs at 15 V and 5 V with multiple current configurations for devices such as the D50, D50s, DX3 Pro and D30.

For Clean-Power Audio Upgrades

This unit suits owners of the listed Topping products who want to replace the stock switching adapter with a linear source that measures below 1 mVrms output noise. Builders needing higher current, different voltage rails or a supply for non-Topping gear should look elsewhere.

Simple Desktop Installation

Connect the IEC mains lead, set the 115 V or 230 V selector to match local mains voltage, then attach the required DC cables to the 5.5 mm / 2.1 mm barrel or USB-A ports. The chassis runs hot at high load, which is normal; ensure ventilation space around the 11.0 cm × 11.0 cm × 5.2 cm enclosure.

Highlights

  • Ultra-low noise output for cleaner audio
  • Toroidal transformer reduces electromagnetic interference
  • Three TPS7A4700 linear regulators ensure precise voltage
  • High capacitor reserves deliver stable power
  • Switchable 115 V / 230 V input matches local mains

Specifications

BrandTOPPING
ModelAMP120
TypeLinear Power Supply
ColorBlack

Questions about this item

Which of my Topping DACs or amps can I power with the P50's 15 V 1 A and 5 V 1 A outputs?

The P50 is designed for the D50, D50s, D50s+A50 stack and the DX3 Pro, delivering 15 V 1 A and two 5 V 1 A rails from its toroidal transformer and TPS7A4700 regulators.

Will the P50's 115 V / 230 V selector work with the 110 V AC line in my older Japanese audio rack?

Yes, the 115 V setting covers AC 100 V–120 V at 50 Hz or 60 Hz, so a 110 V Japanese line is within the specified input range.

How can I verify the P50 is delivering its rated low-noise output after I connect it?

Measure the DC rails with a multimeter; you should see 15 V at up to 1 A and 5 V at up to 1 A per port, with ripple below 1 mVrms as specified.

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