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Compact black box with front panel controls and rear power socket

Barrow Mods

Barrow Mods Topping P50 Linear Power Supply 5V 1A 15V 1A 2 in 1 accessory

SKU CH-YAZ2-KNY98

A dual-output linear power supply delivering 5 V 1 A and 15 V 1 A with ultra-low-noise TPS7A4700 regulators and high-capacitance reserves for HiFi audio gear

  • Ultra-low noise output for HiFi systems with sealed toroidal transformer
  • Dual-voltage 5 V 1 A and 15 V 1 A rails for Topping DACs and amps
  • Global AC compatibility from 100 V to 240 V at 50/60 Hz
  • High energy reserve from 10 000 µF on 15 V and 8 000 µF on 5 V rails
  • Precision regulation via three TPS7A4700 linear regulators for instrumentation-grade accuracy

Purpose and audience

The Topping P50 linear power supply delivers dual regulated rails at 5V 1A and 15V 1A for HiFi audio components. It targets owners of Topping DACs and headphone amplifiers such as the E50, D50 series, A50III and DX3 Pro who want cleaner DC power than a standard wall adapter provides.

Voltage input limits

The unit accepts either 115V for AC 100V-120V 50/60 Hz or 230V for AC 220V-240V 50/60 Hz, so it operates on mains supplies worldwide without an external converter. A sealed toroidal transformer keeps magnetic leakage and conducted noise low, and the design suppresses EMC emissions for sensitive analog circuits.

Capacity and headroom

Each 15V rail is backed by more than 10000uF of total capacitance, while the 5V rail stores more than 8000uF, giving substantial energy reserves for dynamic peaks. Three TPS7A4700 ultralow noise linear regulators maintain tight regulation for instrumentation-grade accuracy, but the fixed 1A current limit per rail means the supply cannot support higher-draw devices or multi-unit chains.

Highlights

  • Ultra-low noise output for HiFi systems with sealed toroidal transformer
  • Dual-voltage 5 V 1 A and 15 V 1 A rails for Topping DACs and amps
  • Global AC compatibility from 100 V to 240 V at 50/60 Hz
  • High energy reserve from 10 000 µF on 15 V and 8 000 µF on 5 V rails
  • Precision regulation via three TPS7A4700 linear regulators for instrumentation-grade accuracy

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the 5 V or 15 V rail for my Topping DAC?

The P50 supplies both rails simultaneously — 5 V at 1 A and 15 V at 1 A — so you do not choose between them; the unit powers compatible Topping devices that need either or both voltages

What does the 1 A rating mean when the P50 is connected to a D50 III or DX3 Pro+?

Each rail can deliver up to 1 A continuously, giving the connected DAC or headphone amplifier stable current with the large reservoir capacitors (over 8000 µF on 5 V, over 10000 µF on 15 V) to handle transient peaks

Does the IEC input auto-switch between 115 V and 230 V mains?

No — the P50 has a manual 115 V / 230 V selector; set it to 115 V for 100–120 V 50/60 Hz supplies or 230 V for 220–240 V 50/60 Hz supplies before plugging in

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