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The SF-24V Vacuum Tube Stereo Ribbon Microphone from Royer Labs is a professional-quality vacuum tube ribbon microphone that lets you make stereo recordings with a single piece of equipment. The mic's vacuum tube electronics provide a high output and high SPL capabilities for a smooth, natural sound with no distortion. The circuitry also provides an exceptionally low self-noise for quiet operation for any recording application. The SF-24V essentially contains 2 matched ribbon microphones, providing a crossed figure-8 pickup pattern ideal for classic Blumlein or M-S recording.
The mic's triode-configured cathode follower circuitry allows you to have long cable runs without degrading quality or experiencing high frequency loss. The mic's dedicated power supply and impedance matching circuitry enhance long cable run capability and allow you to use the unit with a variety of preamps without having to worry about gain or impedance matching. The electronics also shield against damage caused by phantom power, miswiring, or electrical glitches.
Dual ribbon elements provide true stereophonic (Blumlein and M-S) recording from a single piece of hardware. The mic elements have equal sensitivity on the front and back, and are also not affected by heat or humidity, making the microphone extremely robust
Vacuum Tube Circuitry
The twin head amplifiers have military-grade 5840 vacuum tubes to provide smooth, natural audio
High SPL and Low Noise
The mic's circuitry keeps self-noise to a minimum and provides high SPL capability, allowing you to capture the pure sonic qualities of your audio source without coloration or distortion from the microphone. The increased sensitivity comes from efficient matching toroidal transformers, which do not add noise and have low magnetic leakage
Long Cable Runs
Triode-configured cathode follower circuitry allows you to make long cable runs without signal degradation or loss of high frequencies. The mic's dedicated power supply also aids in high-performance long cable runs
Fully-balanced outputs are electronically isolated with special Jensen output transformers to virtually eliminate induced noise
Impedance Matching Circuitry
Integrated impedance matching circuitry keeps a perfect load on the ribbon elements at all times, and allows you to use a variety of preamps without worrying about gain and impedance matching. The electronics also shield against damage caused by phantom power, miswired cables, or electrical glitches