Royer Labs SF-24V Vacuum Tube Stereo Ribbon Microphone

Royer Labs SF-24V Vacuum Tube Stereo Ribbon Microphone

Royer Labs SF-24V Vacuum Tube Stereo Ribbon Microphone

B&H # ROSF24V MFR # SF-24V
Royer Labs SF-24V Vacuum Tube Stereo Ribbon Microphone

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Product Highlights

  • Vacuum Tube Circuitry
  • Blumlein and M-S Recording
  • High SPL Capability
  • Crossed Figure-8 Pickup Pattern
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  • 1Description
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.
Stereo Recording
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
Balanced Outputs
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
UPC: 899060002266
In the Box
Royer Labs SF-24V Vacuum Tube Stereo Ribbon Microphone
  • Power Supply
  • Wood Storage Case
  • 5-Pin XLR to Dual 3-Pin XLR Cable (25')
  • Shockmount
  • Limited Lifetime Warranty
  • Limited 1-Year Warranty on Ribbon Element
  • Table of Contents
    • 1Description
    Operating Principle Pressure Gradient
    Tube Yes
    Polar Pattern Figure 8
    Frequency Range 30 Hz to 15 kHz
    Equivalent Noise Level 18 dB 
    Maximum SPL 130 dB SPL
    Impedance 450 ohms @ 1 kHz
    Load Impedance 1.5 kOhms
    Sensitivity -38 dB
    Output Connectors 3-Pin XLR, 7-Pin XLR
    Operating Current Consumption 4.0 mA
    General
    Length 10.63" (270 mm)
    Diameter 1.54" (39 mm)
    Weight 20.56 oz (583 g)
    Packaging Info
    Package Weight 21.3 lb
    Box Dimensions (LxWxH) 22.7 x 16.6 x 9.3"

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