An easy-to-build, 3-rail power supply unit designed for DIY audio projects and 500-series racks, featuring standard adjustable linear regulators and massive filtering capacity in a compact 100 mm x 80 mm footprint.
Technical Specifications
Output Rails: 3 independent rails (2 positive and 1 negative at 1.5 A each)
Voltage Regulation: Classic LM317 and LM337 regulators for ± rails; dedicated LM317 regulator for the +48 V rail
Filtering: Massive 20,000 µF super-smoothing capacitor bank (10,000 µF per ± rail)
Variable Voltage: ±V1 configurable from 3 V to 30 V (transformer dependent)
Terminal Block Connectors: Heavy-duty screw terminals accepting cables up to 2.5 mm²
Board Dimensions: 100 mm x 80 mm
Key Features
All-in-One 3-Rail Supply: Provides +16 V, -16 V, and +48 V phantom power from a single 2x 15–18 Vac (100 VA) transformer setup (TRIAD VPT30-3330 highly recommended)
Full Rack Capability: Delivers up to 1.5 A per rail, offering ample power for a full 11-slot 500-series rack loaded with preamps, EQs, and dynamics processors
Massive Power Filtering: Integrated 20,000 µF capacitor bank ensures exceptional ripple suppression and clean DC voltage for noise-sensitive audio hardware
Safety & Cabling: Features dedicated Protective Earth (PE) and Ground (GND) connections, paired with heavy-duty terminal blocks supporting up to 2.5 mm² wire gauge
Available Options
PCB Only: 1x EASY VPR Bare PCB
Full Kit: 1x EASY VPR Bare PCB and all required electronic components
Product name: EASY VPR Product identifier: PSU004/PCB004 Manufacturer: Link Audio Design, August-Bebel-Str.18, 08373 Remse, linkaudiodesign@gmail.com