{"product_id":"bobs-devices-sky-10s-step-up-transformer","title":"Bob's Devices SKY 10-S Step-Up Transformer","description":"\u003ch1\u003eBob's Devices SKY 10-S Step-Up Transformer\u003c\/h1\u003e\n\u003ch3\u003eSwitchable 1:5 \/ 1:10 MC step-up with longer core and revised winding. With RCA and\/or XLR inputs and outputs. Hand-built in the USA\u003c\/h3\u003e\n\u003cp\u003eBob’s Devices SUTs are built one at a time with point-to-point wiring and no circuit boards, then individually tested. The SKY 10-S is the “S” revision of the original SKY 10—same compact footprint and switchable gain, but with a longer core and a subtle winding change that yields a heavier, more authoritative presentation in highly resolving systems.\u003c\/p\u003e\n\u003cp\u003eThe ratios remain 1:5 (LOW) and 1:10 (HIGH), preserving the model’s versatility across a wide range of low-output moving-coil cartridges. The design runs passively, adding no active-stage noise, and targets wide bandwidth and dynamic headroom.\u003c\/p\u003e\n\u003cp\u003eConnectivity is flexible: a front-panel ground post with a Ground\/Lift toggle helps you tame ground loops, and you can order the SKY 10-S with different connector configurations (RCA, XLR, or mixed) to suit your system layout.\u003c\/p\u003e\n\u003ch4\u003eSUT with MM Phono Vs. MC Phono\u003c\/h4\u003e\n\u003cp\u003eMost moving-coil phono preamps add an extra gain stage to boost the tiny MC signal up to moving-magnet level, but that almost always raises noise and compromises sound. That's a lot of gain needed on a very delicate signal. \u003c\/p\u003e\n\u003cp\u003eA Bob’s Devices step-up transformer (SUT) avoids those trade-offs: it’s passive, silent, and purpose-built to match your specific MC cartridge to any MM phono input.\u003c\/p\u003e\n\u003cp\u003eInstead of dealing with switches, jumpers, and noise level inside an all-in-one preamp, you get the cleanest signal path, better cartridge matching, and a lower noise floor. \u003c\/p\u003e\n\u003cp\u003eIf you want your MC cartridge to deliver everything it’s capable of—clarity, dynamics, and a quieter background—you’ll get it with a dedicated Bob’s Devices SUT.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ch4\u003eTransformers\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eSeries\/Revision:\u003c\/strong\u003e SKY 10-S (longer core, revised winding over SKY 10)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Principle:\u003c\/strong\u003e Passive MC step-up transformer (no active gain stage)\u003c\/p\u003e\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eStep-Up Ratios (Low, High):\u003c\/strong\u003e 1:5, 1:10\u003c\/p\u003e\n\u003ch4\u003eConnectivity\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eInputs\/Outputs:\u003c\/strong\u003e Configurable—RCA and XLR options available \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ground post with Ground\/Lift switch\u003c\/p\u003e\n\u003ch4\u003eConstruction\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eBuild:\u003c\/strong\u003e Hand-made, point-to-point wiring; no PCBs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacture:\u003c\/strong\u003e Hand-crafted in the USA\u003c\/p\u003e","brand":"Bob's Devices","offers":[{"title":"RCA to RCA","offer_id":51737288343736,"sku":"BDSKY10S-R\/R","price":1650.0,"currency_code":"USD","in_stock":true},{"title":"RCA in \/ XLR out","offer_id":51737288376504,"sku":"BDSKY10S-R\/X","price":1850.0,"currency_code":"USD","in_stock":true},{"title":"XLR to XLR","offer_id":51737288409272,"sku":"BDSKY10S-X\/X","price":1650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/935314_97ade2aef33343c9884061dba1132202_mv2.jpgcopy_acdb5c73-85d8-40fb-8228-20a713d00b2f.jpg?v=1757455130","url":"https:\/\/upscaleaudio.pro\/products\/bobs-devices-sky-10s-step-up-transformer","provider":"Upscale Audio","version":"1.0","type":"link"}