Royer Labs SF-2 Ribbon Microphone – Matched Pair

The Royer Labs SF-2 is a high-sensitivity, phantom-powered active ribbon microphone designed for classical and acoustic instrument applications. An evolution of the original SF-1, the SF-2 delivers condenser-level output with a sensitivity of -38 dB, ideal for use with standard microphone preamps. Its active electronics and custom FET design provide ultra-quiet performance with self-noise below 18 dB, ensuring pristine sound capture.

With a wide, flat frequency response and low-mass 1.8-micron ribbon element, the SF-2 captures remarkable detail and transient response. The proprietary magnet/pole piece structure, using Neodymium magnets, guarantees consistent frequency response with negligible off-axis coloration. The SF-2’s low-impedance output allows for long cable runs with minimal signal loss, while its balanced head amplifier system ensures a perfect load on the ribbon at all times for optimized sound performance.

Specifications:

• Type: Active ribbon microphone
• Max SPL: 130 dB
• Frequency Range: 30 Hz – 15 kHz
• Sensitivity: -38 dBV/Pa (12.6 mV)
• Impedance: 200 Ohms
• Transducer Type: Ribbon
• Polar Pattern: Bi-Directional / Figure-Eight
• Dimensions: 5.59 in (length) x 1.53 in (diameter)
• Weight: 0.98 lb

Features:

• Phantom-powered active electronics for high output and low self-noise
• Toroidal transformer adds 14 dB of “free gain” for detailed sound capture
• Immune to load variations, heat, and humidity
• Consistent frequency response with minimal off-axis coloration
• Ideal for long cable runs with minimal signal loss

Recommended Applications:

• Classical ensembles, choirs, orchestras, and string sections
• Acoustic instruments, including woodwinds, piano, and strings
• Voice-over, vocals, and room miking for ambient capture

Package Contents:

• Matched pair of SF-2 microphones, Padauk wood presentation case, 20’ microphone cable, RSM-24 shock mount, aluminum storage case, and documentation