AudioRoot Femto Pre-amp

• Dual high gain/low noise microphone preamplifier (+18 to + 70dB)
• 48V phantom powering
• 80Hz 12dB/oct high-pass filter
• Bright OLED screen (sunlight readable)
• 2 mic inputs on XLR3 connectors
• Balanced line level output on XLR5 connector
• High quality audio potentiometers
• Superb powder-coated and engraved aluminum enclosure
• Lightweight
• Power efficient (6 hours autonomy with 2 Schoeps CMC64Ug)

The AUDIOROOT FEMTO is a high-quality battery-powered microphone preamplifier for location recording (ENG, EFP, music recording, etc.). The FEMTO is a robust preamplifier in an aluminum housing with engraved texts, suitable for professional applications, with a high gain range and excellent sound quality.

Weight (without batteries): 327g
Dimensions: 95 x 129 x 42mm
Power supply: 2 x 9V batteries (type 6LR61) or external (12-18V)

Technical Specifications

• Input impedance: > 5kΩ
• Minimum gain: 18dB (upon request, a 6dB gain version is available (FEMTO-L))
• Maximum gain (Zsource = 50Ω, Zload = 600Ω): > 70dB
• Distortion: 0.002% < 40dB gain / 0.006% @ 60dB gain
• Equivalent input noise EIN: -129.2dBu @ max gain (Zsource = 200Ω)
• Bandwidth (+/- 3 dB): 15Hz – 20kHz
• Max output level (Zload = 600Ω, Vpower = 16V): +18dBu
• Power consumption – (external power = 18V): 48V off: 44mA / 48V on + 2 Schoeps CMC6Ug: 82mA
• Power consumption – (internal power): 48V off: 31mA / 48V on + 2 Schoeps CMC6Ug: 67mA
• External power connector: Hirose 4-pin connector