{"product_id":"royer-ro-sf24v","title":"Royer SF-24V Tube Stereo Ribbon Microphone (Satin Nickel)","description":"\u003cp\u003eThe Royer SF-24V is a vacuum tube stereo ribbon microphone and the top model in Royer's SF series. Two matched ribbon mics sit one above the other in a Blumlein pair, each aimed 45 degrees from center, so one mic records true stereo in Blumlein or mid-side. It uses the same tube electronics as Royer's R-122V, which add midrange reach, clarity, detail and air, with -38 dB output for any professional preamp and self-noise under 18 dB.\u003c\/p\u003e\n\n\u003ch3\u003eTube Electronics\u003c\/h3\u003e\n\u003cp\u003eEach channel runs a low-noise, military-grade 5840 tube wired as a triode cathode follower, which lets the mic drive long cable runs without losing high frequencies. Jensen output transformers isolate the balanced outputs to keep induced noise out, and a dedicated power supply feeds the tubes with ample current. The circuit gives each ribbon the correct load whatever preamp follows and protects the ribbons from phantom power, electrical glitches and miswired cables.\u003c\/p\u003e\n\n\u003ch3\u003eStereo and Mono\u003c\/h3\u003e\n\u003cp\u003eThe microphone connects to its power supply over a 7-pin cable, and the supply delivers the two channels on 3-pin XLR outputs. The two sides stay in phase when summed to mono, and each side works on its own as a mono figure-8 mic. Royer recommends the SF-24V for full orchestra, choirs and ensembles, classical piano, drum overheads, percussion and acoustic instruments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVacuum tube circuitry for high output and correct ribbon loading\u003c\/li\u003e\n  \u003cli\u003eTrue stereo (Blumlein and M-S) recording from one microphone\u003c\/li\u003e\n  \u003cli\u003eHigh SPL capability, with no distortion up to the maximum rating\u003c\/li\u003e\n  \u003cli\u003eExtremely low residual noise\u003c\/li\u003e\n  \u003cli\u003eRibbons unaffected by heat or humidity\u003c\/li\u003e\n  \u003cli\u003eNo high-frequency phase distortion\u003c\/li\u003e\n  \u003cli\u003eEqual sensitivity from the front and back of each ribbon\u003c\/li\u003e\n  \u003cli\u003eConsistent frequency response regardless of distance\u003c\/li\u003e\n  \u003cli\u003eHigh-efficiency matching toroidal transformers\u003c\/li\u003e\n  \u003cli\u003eVery low magnetic leakage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating principle:\u003c\/strong\u003e Electrodynamic pressure gradient with vacuum tube electronics\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTubes:\u003c\/strong\u003e 2 x JAN mil-spec 5840W pentodes wired as triodes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePolar pattern:\u003c\/strong\u003e Crossed figure-8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElements:\u003c\/strong\u003e Two 1.8-micron aluminum ribbons\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 30 Hz to 15 kHz, +\/- 3 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e -38 dB (re. 1 V\/Pa, +\/- 1 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-noise:\u003c\/strong\u003e Under 18 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput impedance:\u003c\/strong\u003e 450 ohms at 1 kHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecommended load impedance:\u003c\/strong\u003e 1,500 ohms or higher\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum SPL:\u003c\/strong\u003e Over 130 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMicrophone connector:\u003c\/strong\u003e 7-pin male XLR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower supply outputs:\u003c\/strong\u003e Two 3-pin male XLR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube supply:\u003c\/strong\u003e Plate 135 V DC at 2 mA, filament 6 V DC at 150 mA, from the dedicated power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMains:\u003c\/strong\u003e 110, 120, 220 or 240 V AC, 50\/60 Hz, selectable at the power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 270 mm long, 39 mm at the base, 25 mm at the top (10 5\/8 x 1.5 x 1 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 583 g (20.5 oz), microphone only\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShipping weight:\u003c\/strong\u003e 21 lb (9.5 kg)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Dull satin nickel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtension cables:\u003c\/strong\u003e Royer 7-pin EXCV series: EXCV-25, EXCV50 and EXCV100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 10 years on materials, workmanship and finish to the original owner; first re-ribbon free within one year\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSF-24V microphone\u003c\/li\u003e\n  \u003cli\u003eVacuum tube power supply\u003c\/li\u003e\n  \u003cli\u003e7-pin XLR cable\u003c\/li\u003e\n  \u003cli\u003eAC power cord\u003c\/li\u003e\n  \u003cli\u003eSling-Shock RSM-SS24 shock mount\u003c\/li\u003e\n  \u003cli\u003ePadouk wood presentation case\u003c\/li\u003e\n  \u003cli\u003eHard carrying case\u003c\/li\u003e\n  \u003cli\u003eMicrophone sock\u003c\/li\u003e\n  \u003cli\u003eCable ties\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Royer","offers":[{"title":"Default Title","offer_id":67380202537209,"sku":"RO-SF24V","price":7199.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5766\/1177\/files\/sf24v-1.jpg?v=1792176224","url":"https:\/\/blackoutaudio.com\/products\/royer-ro-sf24v","provider":"Blackout Audio","version":"1.0","type":"link"}