The AUDIOROOT FEMTO is a premium, battery-powered stereo microphone preamp designed for location sound recording (ENG, EFP, music, and more). Engineered for simplicity and performance, it features two high-gain (+10 to +64 dB), low-noise microphone preamps with 48V phantom power, an 80 Hz, 12 dB/oct high-pass filter, and a high-contrast, sun-readable OLED display for audio and battery-level monitoring—all housed in a compact, lightweight chassis that occupies minimal space in an audio bag.
With outstanding technical and sonic performance, the FEMTO pairs effortlessly with the best professional microphones and serves as the perfect add-on to an analog mixer, digital recorder, or other pro-audio gear. Built for reliability, it is designed to withstand harsh environments with rugged aluminum construction, a durable powder coated finish, and engraved markings that remain legible over time. The FEMTO operates autonomously on two 9V batteries or an external DC power source, such as a wall adapter or an Audioroot eSmart lithium battery, ensuring uninterrupted performance in the field.
- Two mic inputs on XLR3 connectors
- Dual high-gain/low-noise mic preamps (+10 to +64 dB)
- Default minimum gain setting of +10 dB
- 48V phantom power
- 80 Hz, 12 dB/oct high-pass filter
- Bright OLED screen (sunlight readable)
- Two balanced line-level outputs on one XLR5 connector
- High-quality audio potentiometers
- Sleek powder coated and engraved aluminum enclosure
- Compact and lightweight for small footprint in audio bag
- Powering: two 9V batteries (type 6LR61) or optional external DC power source (12 to 18V) via Hirose connector
- Compatible with iPOWERUS li-po 9V rechargeable batteries
- Recommended external 100-240V PSU (available separately): MEAN WELL GE12I18-P1J
- Power-efficient: (6 hours on two 9V batteries running 2 Schoeps CMC64Ug)
- Includes stereo output cable: XLR5 to two TA3F