Skip to main content
Play Video
Royer Royer

Royer SF-24V Vacuum Tube Stereo Ribbon Microphone Nickel

Q&A SKU #H91618000001000
4999.0 $4,999.00
Or
6-Month Special Financing
Limited time Learn more
More ways to pay:
Loyalty Points Icon
Loyalty Points Icon
Earn 39,992 reward points
($399.92 in credit)
Earn 39,992 reward pts.
($399.92 in credit)
Inventory Msg Check Mark Inventory Msg Exclamation In Checkout Promo Inventory Msg Download Icon
In Stock & Ready to Ship
Most orders placed before 3 p.m. ET ship same day (except weekends and holidays).
  • Free Shipping
  • Flexible Financing
  • Lowest Price
  • Ships Internationally
Product Warranties Icon Product Warranties Icon

Gold Coverage Protection

Protect your gear

Chevron Right Icon
Overview

Top of the Royer SF-series of ribbon microphones.

The SF-24V vacuum tube stereo ribbon microphone is the pinnacle of Royer's SF-series stereo microphones. The sound pickup is lush, smooth and natural, with outstanding stereo imaging and superb transient response. The tube electronics provide increased midrange reach, unmatched clarity and detail, and an airiness previously unheard of in ribbon mics. Utilizing the same proprietary tube electronics as in Royer's TEC Award-winning R-122V ribbon microphones, the SF-24V delivers the ultimate in stereo ribbon miking for the true connoisseur of recorded sound.

The SF-24V's independent tube circuits provide an output level of –38dB, suitable for use with any professional preamplifier. With self-noise of lower than 18dB, the SF-24V's ultraquiet operation is suitable for the most demanding classical and acoustic recording applications.

Like an SF-12, the SF-24V is actually two matched ribbon microphones, placed one above the other in a coincident pair, each aimed 45 degrees from center in the classic Blumlein configuration. The magnet/pole piece structure of each ribbon transducer delivers a wide, uniform frequency response with no substantial peaks or dips, and the 1.8-micron ribbons produce superb transient response. Frequency response is excellent regardless of the angle of sound striking the ribbons and off-axis coloration is negligible.

The Electronics
The SF-24V's twin-head amplifiers consist of low-noise, triode-connected military-grade 5840 vacuum tubes. Designed for a wide range of applications, the SF-24V delivers –38dB output and the drive capabilities only vacuum tube head amplifiers can provide. The circuits are devoid of typical vacuum tube coloration.

The SF-24V's triode-configured cathode follower circuitry enables the microphone to drive long cable runs without sonic degradation or high-frequency loss. This capability is further enhanced by the SF-24V's dedicated power supply, which provides ample current to the vacuum tube electronics. Induced noise is virtually eliminated by the microphone's fully balanced outputs, which are electrically isolated with special purpose Jensen output transformers.

The SF-24V has far more level than non-powered ribbon microphones and its impedance matching circuitry places a perfect load on the ribbon element at all times. This allows the use of a wide variety of mic preamps without concern for gain and impedance matches, two critical issues with ribbon microphones. In addition, the microphone's electronics shield the ribbon elements from any possibility of damage by phantom power, electrical glitches or miswired cables.

It is important to note that the SF-24V's higher sensitivity creates no additional self-noise. All of the SF-24V's increased level comes from its large, specially wound toroidal transformers, so there is no additional noise associated with the microphone's higher output. The tube system operates at less than unity, adding no noise of its own.

Features

  • Vacuum-tube circuitry provides high-output and impedance matching
  • True stereophonic (Blumlein and M-S) recording from one coincident microphone
  • High-SPL capabilities
  • No distortion up to maximum SPL rating
  • Extremely low residual noise
  • Ribbon elements are not affected by heat or humidity
  • Absence of high-frequency phase distortion
  • Equal sensitivity from front or back of elements
  • Consistent frequency response regardless of distance
  • High-efficiency, matching toroidal transformers
  • Very low magnetic leakage

Go for the best Royer ribbon mic you can buy.

Specs

SF-24V Vacuum Tube Stereo Ribbon Microphone Specifications:

  • Acoustic Operating Principle: Electrodynamic pressure gradient with vacuum tube electronics
  • Vacuum Tube: JAN mil-spec 5840W pentode wired in triode configuration
  • Polar Pattern: Crossed figure-8s
  • Generating Element: 1.8-micron aluminum ribbon
  • Frequency Response: 30–15,000Hz +/- 3dB
  • Sensitivity: –38dB (re. 1v/pa +/-1dB)
  • Self-Noise: < 18dB
  • Output Impedance: 450 ohms @ 1K
  • Recommended Load Impedance: 1,500 ohms or greater
  • Maximum SPL: >130dB
  • Microphone Output Connector: Male XLR 7 pin (stereo*)
  • Power Supply Output Connectors: Two Male XLR-3 pin
  • Power Requirements: Plate supply: 135 VDC @2ma, Filament supply: 6 VDC @150ma from dedicated power supply
  • Supply Current: 4 mA per channel
  • Microphone Dimensions (top x base): 10-5/8" x 1.5" x 1"
  • Weight: 583 g, 20.5 oz.
  • Finish: Dull Satin Nickel, Optical Black finish optional
Q&A

Questions & Answers

Do you have questions about this product?

Shop with a Friend
Free Shipping
  • Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
  • Orders placed before 3 p.m. ET usually ship the same business day.
Learn More
2-Year Free Warranty on Guitars

Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.

Contact Us for Details
We're Here for You

Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.

Contact Us
Proactive Advisor Support Chat