{"title":"Bob's Devices","description":"","products":[{"product_id":"bobs-devices-shielded-silver-clad-copper-interconnects-pair","title":"Bob's Devices Shielded Silver Clad Copper Interconnects (pair)","description":"\u003ch1\u003eBob's Devices Shielded Silver Clad Copper Interconnects (pair)\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSpecially designed for low voltage\/low current applications, these Bob's Devices cables are ideal for for connecting your turntable to phonostage or SUT, or between your SUT and phonostage. They are double shielded to avoid EFI\/RFI, giving you black backgrounds and a clear an open sound.\u003c\/p\u003e\n\u003cp\u003eAll Bob's Devices cables are hand-crafted, fully balanced, individually tested, and terminated with top-of-the-line Cardas Audio SRCA or Cardas XLR connectors.\u003c\/p\u003e\n\u003ch4\u003eCareful Cable Design\u003c\/h4\u003e\n\u003cp\u003eAll internal connections are resistance soldered and the architecture is balanced with an additional foil shield that's covered with a braided conductive shield that is connected on one end only. This provides shielding effectively rejecting RF and EM interference without creating ground loops (say goodbye to hum). \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eBob's custom terminated silver-clad crystal copper interconnects feature a balanced design architecture using polyethylene insulation and a pair of silver-plated copper conductors (SP-OFC) that are insulated with foamed polyethylene and wrapped together by a double screen shielding consisting of a tinned OFC braided shield coupled to an Aluminum\/Mylar shield.\u003c\/p\u003e\n\u003cp\u003eThis wire architecture is modeled from the wire Koetsu uses to wrap their Platinum magnets.\u003c\/p\u003e\n\u003cp\u003eThe result is a sound that will thrill you with exhilarating highs, tight bass, and romantic mids—very much the Koetsu paradigm.  \u003cbr\u003e \u003cbr\u003eThe silver-clad copper wire uses tUP-OCCP (Ultra Pure - Ohno Continuous Casting Process) which is a continuous-casting method that was developed by Professor Ohno of the Chiba Institute in Japan. This wire is free from impurities (up to 99.99998% pure copper and silver). Accordingly, it is able to transmit electrical signals faster, and with less distortion than ordinary OFC and silver wires.\u003cbr\u003e\u003c\/p\u003e","brand":"Bob's Devices","offers":[{"title":"Cardas SRCA","offer_id":37394755977400,"sku":"BD SIL\/CPR-IC 1M-1","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Cardas XLR","offer_id":37394756010168,"sku":"BD SIL\/CPR-IC 1M-2","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/7869ac_50f830b04e8e4a84b8c565122df90896_mv2_jpg.webp?v=1741631162"},{"product_id":"bobs-devices-sky-20s-step-up-transformer","title":"Bob's Devices SKY 20-S Step-Up Transformer","description":"\u003ch1\u003eBob's Devices SKY 20-S Step-Up Transformer\u003c\/h1\u003e\n\u003ch3\u003eA hand-crafted, MC SUT with gold-plated hardware.\u003c\/h3\u003e\n\u003cp\u003eDesigned to match the inductance of a wide range of cartridges, a Bob's Devices SKY SUT sits between a low-output moving coil cart and your phonostage. The SKY uses proprietary 80% nickel mu-metal laminations in the transformer windings which are processed for optimal performance at very low signal levels. The result is giant crystal structures within the material, and when the laminations are stacked into the coils great care is taken not to induce any strain. Due to this, bandwidth has been extended in both directions than in previous versions.\u003cbr\u003e\u003cbr\u003eThe updated SKY 20-S sees an \u003cspan\u003eincrease in the length of the core, allowing a change to the winding scheme. Bob's say the 20-S is \"heavier and meatier.\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eT\u003c\/span\u003eransformers are matched by gold-plated hardware in a hand-polished black powder-coated cast-aluminum enclosure. All lettering is laser etched. The two C\u0026amp;K Silver front panel switches control gain (high, low) and ground (on\/lift).\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\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eSKY S Models\u003c\/h4\u003e\n\u003cp\u003eThe models offer the following switchable gain options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSKY 10-S: \u003c\/strong\u003e1:5, 1:10\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSKY 20-S:\u003c\/strong\u003e 1:10, 1:20\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSKY 30-S: \u003c\/strong\u003e1:15, 1:30\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eConstruction Techniques\u003c\/h4\u003e\n\u003cp\u003eAll connections are resistance soldered using the American Beauty system which avoids heat damage to the delicate insulation on the hair-like wires of the transformers. A grounding post lets you connect your turntable ground and your preamplifier ground. It also includes a ground \"lift\" switch.\u003c\/p\u003e\n\u003cp\u003eIn all modes, the transformer cases and internal Faraday shields are connected to the ground screw. In the Ground mode, the phono negatives are connected to the grounding lug. This configuration works well for those systems where the turntable ground is connected to the negative leads coming from the phono cartridge or where the negative inputs to the preamp are internally connected to ground.\u003c\/p\u003e\n\u003cp\u003eIn the Lift mode, none of the conductors in the RCA jacks are connected to the case, ground, or shield and there is no electrical connection between channels. This design allows you much flexibility to mitigate ground loops regardless of the configuration of your other equipment.\u003cbr\u003e\u003c\/p\u003e","brand":"Bob's Devices","offers":[{"title":"RCA to RCA","offer_id":48526904295608,"sku":"BD SKY-20S RCA\/RCA","price":1650.0,"currency_code":"USD","in_stock":true},{"title":"XLR to XLR","offer_id":48526904328376,"sku":"BD SKY-20S XLR\/XLR","price":1970.0,"currency_code":"USD","in_stock":true},{"title":"RCA in \/ XLR out","offer_id":48526904361144,"sku":"BD SKY-20S RCA\/XLR","price":1970.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/935314_97ade2aef33343c9884061dba1132202_mv2_jpg.webp?v=1741629637"},{"product_id":"bobs-devices-sky-30s-step-up-transformer","title":"Bob's Devices SKY 30-S Step-Up Transformer","description":"\u003ch1\u003eBob's Devices SKY 30-S Step-Up Transformer\u003c\/h1\u003e\n\u003ch3\u003eSwitchable 1:15 \/ 1:30 MC step-up with longer core and improved winding. Handcrafted in the USA\u003c\/h3\u003e\n\u003cp\u003eBob's Devices SUTs are hand-made, one at a time, using point-to-point wiring and are individually tested. No circuit boards are used. The 30-S runs passively, adding no noise, and is designed for highly resolving analog systems.\u003c\/p\u003e\n\u003cp\u003eThe SKY 30-S is an upgrade from the SKY 30. It is heavier and has better sound. Says Bob's Devices, \"It was hard to upgrade the SKY 30. We tried many combinations and found that by increasing the length of the core, we could change the winding scheme just a bit. You will 'hear the magic.\"\u003c\/p\u003e\n\u003cp\u003eThe SKY 30-S has the same ratios as the original: 1:15 in low and 1:30 in high. You will hear improved bandwidth and dynamics, and enjoy the same black powder-coated cast-aluminum enclosure with laser-etched lettering.\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.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ch4\u003eTransformers\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eLamination\/Core:\u003c\/strong\u003e 80% nickel mu-metal laminations, processed for low-level performance\u003c\/p\u003e\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eStep-Up Ratios (Low, High):\u003c\/strong\u003e 1:15, 1:30\u003c\/p\u003e\n\u003ch4\u003eConnectivity\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eInputs\/Outputs:\u003c\/strong\u003e Choose from RCA and XLR\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ground post with Ground\/Lift toggle\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwitching Hardware:\u003c\/strong\u003e Premium silver-contact toggles for Gain and Ground\u003c\/p\u003e\n\u003ch4\u003eConstruction\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Hand-polished black powder-coated cast-aluminum; laser-etched labeling\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWiring:\u003c\/strong\u003e Point-to-point; no PCBs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacture:\u003c\/strong\u003e Hand-built in the USA\u003c\/p\u003e","brand":"Bob's Devices","offers":[{"title":"RCA to RCA","offer_id":51687131250872,"sku":"BD-SKY30S-RCA","price":1650.0,"currency_code":"USD","in_stock":true},{"title":"XLR to XLR","offer_id":51687131283640,"sku":"BD-SKY30S-XLR","price":1850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/935314_97ade2aef33343c9884061dba1132202_mv2.jpgcopy_77654c9c-ce3a-4b3c-8be4-c1682bacb486.jpg?v=1756312966"},{"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"},{"product_id":"bobs-devices-sky-40s-step-up-transformer","title":"Bob's Devices SKY 40-S Step-Up Transformer","description":"\u003ch1\u003eBob's Devices SKY 40-S Step-Up Transformer\u003c\/h1\u003e\n\u003ch3\u003eSwitchable 1:20 \/ 1:40 MC step-up with heavier core and refined winding. Handcrafted in the USA\u003c\/h3\u003e\n\u003cp\u003eBob's Devices SUTs are hand-made, one at a time, using point-to-point wiring and are individually tested. No circuit boards are used. The SKY 40-S runs passively, adds no noise, and is designed for highly resolving analog systems.\u003c\/p\u003e\n\u003cp\u003eThe SKY 40-S is an upgrade from the SKY 40. It is heavier and uses a meatier core material, resulting in a slightly taller transformer than the original. Says Bob's Devices, \"It was hard to upgrade the SKY 40. We tried many combinations and found that by increasing the weight and length of the core, we could also change the winding scheme to reduce capacitance. You will 'Hear the Magic.'\"\u003c\/p\u003e\n\u003cp\u003eThe SKY 40-S has the same ratios as the original: 1:20 in low and 1:40 in high. If your system is particularly revealing, you will notice improved dynamics, bandwidth, and clarity, along with the same black powder-coated cast-aluminum enclosure with laser-etched lettering.\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\u003eLamination\/Core:\u003c\/strong\u003e Heavier core material optimized for low-level performance\u003c\/p\u003e\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eStep-Up Ratios (Low, High):\u003c\/strong\u003e 1:20, 1:40\u003c\/p\u003e\n\u003ch4\u003eConnectivity\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eInputs\/Outputs:\u003c\/strong\u003e Choose from RCA and XLR\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ground post with Ground\/Lift toggle\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwitching Hardware:\u003c\/strong\u003e Premium silver-contact toggles for Gain and Ground\u003c\/p\u003e\n\u003ch4\u003eConstruction\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Hand-polished black powder-coated cast-aluminum; laser-etched labeling\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWiring:\u003c\/strong\u003e Point-to-point; no PCBs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacture:\u003c\/strong\u003e Hand-built in the USA\u003c\/p\u003e","brand":"Bob's Devices","offers":[{"title":"RCA to RCA","offer_id":52177896145080,"sku":"BD-SKY40S-RCA","price":1695.0,"currency_code":"USD","in_stock":true},{"title":"RCA in \/ XLR out","offer_id":52177896177848,"sku":"BD-SKY40S-RCA\/XLR","price":1695.0,"currency_code":"USD","in_stock":true},{"title":"XLR to XLR","offer_id":52177896210616,"sku":"BD-SKY40S-XLR","price":1695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/935314_97ade2aef33343c9884061dba1132202_mv2.png?v=1763572615"}],"url":"https:\/\/upscaleaudio.pro\/collections\/bobs-devices.oembed","provider":"Upscale Audio","version":"1.0","type":"link"}