AUDIOROOT

FEMTO-PSU

Outboard Parts

18V DC low-noise power supply, 12W output, Hirose 4-pin connector, <120mVp-p ripple, universal AC input, overload protection, ideal for Femto preamp.

$199.00 CAD
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Description

The Femto PSU is a premium external power supply purpose-built for the FemtoI microphone preamplifier, delivering exceptionally clean, stable 18V DC power. Designed with low-noise performance in mind, it ensures optimal signal integrity in studio, broadcast, or field recording environments where every detail matters.

Equipped with a Hirose-compatible 4-pin male connector, the Femto PSU offers a secure, professional-grade connection. While optimized for the FemtoI, it is also compatible with other devices requiring 18V DC input via a Hirose-style connector which makes it a versatile tool in any critical audio workflow.

Features

Designed for the Femto Preamp
Engineered to provide stable, ultra-clean power for the FemtoI microphone preamplifier and other compatible 18V devices.

Low-Noise Performance
Delivers 18V DC with less than 120 mVp-p ripple for quiet operation in sensitive audio environments.

Professional Hirose Connector
Equipped with a Hirose-compatible 4-pin male connector for secure and reliable connection to audio gear.

Worldwide AC Compatibility
Accepts 90–264V AC input at 47–63 Hz, making it suitable for global use without needing a voltage converter.

Compact and Portable
Lightweight, durable design ideal for both studio and mobile recording setups.

Protected Power Output
Includes built-in overload and short circuit protection for safe and reliable operation.

Flexible Use
While optimized for the Femto preamp, it can also power other compatible devices using 18V DC and a 4-pin Hirose-style input.

Specifications

General Specifications
Product: Femto PSU
Type: External Low-Noise AC/DC Power Supply
Designed For: FemtoI Microphone Preamplifier (and other compatible 18V DC devices)

Electrical Characteristics
Output Voltage: 18V DC
Output Current: Up to 0.67 A
Power Output: 12W
Ripple & Noise: <120 mVp-p (low noise for audio-critical environments)
Input Voltage Range: 90–264V AC
Input Frequency: 47–63 Hz (universal AC input)

Connector
Type: Hirose-compatible 4-pin male connector
Model: HR10A-7P-4P or equivalent

Protection Features
Overload Protection: Yes
Short Circuit Protection: Yes

Design
Form Factor: Compact, lightweight external PSU
Application: Field and studio use requiring stable, clean 18V DC power

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