Royer SF-24

Phantom-Powered Stereo Ribbon Microphone
Royer SF-24 image 1
Royer SF-24 image 1
Sweetwater Savings: $200.00 MSRP: $4,495.00
Special Financing - 8 Days Left

Or just $120/month§ for 36 months

0% interest for 36 months**. 36 equal monthly payments required. Valid through 7/6/2017. Learn more

Special Order
Special-ordered from Royer and usually arrives to you within 1-2 weeks. Please note: special orders cannot be canceled or returned.
Note: While most of the items we sell ship for free, this item does not qualify for free shipping due to special circumstances.

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Royer SF-24
Special Order

The Phantom Powered Stereo Ribbon Mic!

NEWS: Royer Labs has been given a GRAMMY award for their outstanding ribbon mics! In the words of the Academy, these mics "were revolutionary and moved the art of recording forward."

The new SF-24 stereo ribbon microphone is a phantom powered version of the popular Royer SF-12 stereo ribbon microphone, combining the SF-12's high quality audio performance, outstanding stereo separation and imaging with Royer's exclusive active electronics system for ribbon microphones. The SF-24's output of -38 dB is a full 14 dB more sensitive than the non-powered Royer SF-12, putting its sensitivity on par with that of phantom powered condenser microphones. The unique electronics and custom designed FET's used in the SF-24 allow for ultra-quiet operation, with self-noise of lower than 18 dB.

Royer SF-24 at a Glance:
  • It's like getting two matched ribbon mics in one package.
  • Because the SF-24 is active, you can use just about any mic preamp with it.
  • Perfect impedance matching delivers sonic reality

Matched Pair In One
Like an SF-12, the SF-24 is actually two matched ribbon microphones placed one above the other, each aimed 45 degrees from center in the classic Blumlein configuration. The magnet/polepiece structure of each ribbon transducer allows a wide, uniform frequency range with no substantial peaks or dips, and the two 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 SF-24's extension cable comes with a Y adapter that splits into separate 3-pin male XLR connectors labeled "Upper" and "Lower" for the upper and lower capsules of the microphone (when held vertically).

More to Gain...
Royer's Active Series ribbon mics (SF-24 and R-122) are as sensitive as phantom powered condenser microphones, allowing you to use almost any mic preamplifier or board pre. Conventional ribbon microphones average 15 to 20dB lower sensitivity than condenser mics, necessitating the use of high-quality, high-gain microphone preamplifiers for recording softer sound sources like acoustic instruments, vocals and room ambiance. The SF-24 contains two fully balanced, discrete head amplifier systems utilizing ultra-low noise FET's, each delivering a sensitivity of -38 dB. This lets you mate an SF-24 to any preamplifier with average gain characteristics. Even with quiet sound sources, you'll have enough gain to drive any recording medium.

Impedance Matching
The electronics in the SF-24 provide a perfect load to the ribbon elements at all times, allowing the microphone to deliver 100% of its full sonic potential regardless of the input characteristics of the following mic-pre. Due to its low-impedance output, SF-24's can also be used on extremely long cable runs with minimal signal loss.

A good impedance match is critical to ribbon microphones. Impedance mis-matching loads a ribbon improperly, resulting in loss of low end, diminished body, lowered sensitivity and an overall compromised performance. With our Active Series ribbon mics, the ribbon element lives in a perfect world. It sees an optimum impedance match at all times regardless of the following equipment, so its performance will never be compromised by the effects of improper loading. In addition, the ribbon element cannot be damaged by phantom power, electrical glitches or miswired cables.

Royer SF-24 Features:
  • True stereophonic recording from one microphone
  • Active electronics provide high output capability
  • Extremely low self noise
  • Ribbon element not affected by load presented to microphone element unaffected by heat or humidity
  • Equal sensitivity from front and back of elements
  • Consistent frequency response regardless of distance to sound source
  • Very low magnetic leakage
  • Requires +48V phantom power

What Does "Special Order" Mean?

A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide — call (800) 222-4700 for assistance!

Additional Media

Studio Microphone Buying Guide
Unusual Mic Placements

Tech Specs

Microphone Type Ribbon
Ribbon Type 2.5-micron Aluminum, active 48V phantom
Mono/Stereo Stereo
Polar Pattern Crossed Figure-8
Frequency Response 40Hz-15kHz
Max SPL 130dB
Output Impedance 200 ohms
Connector 5-Pin XLR
Weight 1.29 lbs.
Manufacturer Part Number SF-24

Customer Reviews

Based on 4 reviews
Write your review

One and only.

This mic reminds me of my wife. If I had to only choose one mic to take with me to a mission to Mars, it would be this one. All cheesiness aside, this mic shines on everything. Guitar, piano, voice, and maintains mono compatibility of course. Weirdly, it actually makes my voice sound (spoken and singing) like it does to me in my head, i.e. via bone conduction. REALLY. I don't understand how that is possible. If its good enough. For Gary Paczosa, it's good enough for me. Get it.
Music background: Nerd

Yes! You get what you pay for.

I agonized over the price of this mic but after talking with folks at Royer and at Sweetwater, I decided to go ahead. I've never found a mic that was just right for the classical guitar, until now. It's just unbelievable. I honestly can't tell the recording from the live sound, except that the mic puts it in perfect stereo. You get what you pay for.
Music background: Guitarist

Que Bella!!!

This mic IS the best sounding mic (ribbon or not) I've ever heard. There's a reason for the $4000+ price's just that good!
Music background: Professional Recording Engineer


For singers, this microphone is unsurpassed. After searching for years for a microphone that could capture the full spectrum of my operatic/crossover voice, this particular Royer has given me exactly what I have been looking for. Thank you, Dr. Chen for introducing me to this wonderful microphone!

Sweetwater Advice

Forrest Powell

Royer's SF24 is the authoritative phantom-powered stereo ribbon microphone. The SF24 produces incredible transparancy at any frequency, and shines through brightest and clearest with acoustic instruments such as guitars and pianos. Placed 10 feet back from a drum kit at floor level, you will be astounded at the presence and snap of the kick. The rosin sings when an SF24 sits a foot or so from the soundboard of a cello. Fantastic!
See also: Ribbon Mics, Royer, Royer Ribbon Microphones