{"product_id":"samson-mli1-mono-passive-isolation-box-eliminates-ground-loop-hum","title":"SAMSON MLI1 Mono Passive Isolation Box - Eliminates Ground Loop Hum","description":"\u003cp\u003eOur review of the SAMSON MLI1 finds it to be a straightforward, durable solution for anyone battling ground loop hum or needing to convert unbalanced line signals for long runs. The bottom line: this mono passive isolation box is aimed at live engineers, small studios and broadcasters who need a tried-and-true, all-metal direct box that reliably removes buzz without requiring power. Its single biggest reason to buy is the transformer isolation and ground-lift combo that cures noise while preserving a very flat frequency response.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eGround loop removal:\u003c\/strong\u003e The Ground Lift switch disconnects chassis ground between input and output to eliminate hum caused by ground loops in live and studio setups.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTransformer isolation:\u003c\/strong\u003e Samson's STL transformer isolates input and output signals to remove DC noise and maintain signal integrity over long cable runs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFlexible connectivity:\u003c\/strong\u003e 1\/4in and XLR input and output connections let the MLI1 interface with mixers, DI boxes and outboard gear without adapters.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRuler flat frequency response:\u003c\/strong\u003e The passive circuitry delivers a flat response from 10Hz to 35kHz, preserving the original tone with very low distortion.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRoadworthy construction:\u003c\/strong\u003e An all-metal, impact-resistant chassis and 14-gauge steel housing provide reliable protection for touring and frequent setup changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe MLI1 is ideal for gigging musicians, FOH engineers and small studio owners who need a compact, no-power solution to eliminate hum and convert unbalanced to balanced line signals for long cable runs. It suits scenarios where simplicity and durability matter more than on-board EQ or active buffering.\u003c\/p\u003e\n\u003cp\u003eThose who need multi-channel switching, built-in pads or active electronics with precise gain control should look elsewhere; the MLI1 is a passive, single-channel unit best used as a clean isolation box rather than a tone-shaping tool.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEffectively reduces noise from ground loops thanks to the ground lift and transformer isolation.\u003c\/li\u003e\n \u003cli\u003ePreserves tonal accuracy with a very flat 10Hz to 35kHz frequency range and low distortion.\u003c\/li\u003e\n \u003cli\u003eSturdy all-metal, impact-resistant construction suitable for road use and frequent handling.\u003c\/li\u003e\n \u003cli\u003eCompetitive price point and simple, reliable functionality praised by customers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eOnly a single mono channel is provided, so multiple units are needed for multi-channel setups.\u003c\/li\u003e\n \u003cli\u003eAs a passive box, it does not provide active gain, so it will not boost weak signals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eMono passive isolation box\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTransformer\u003c\/td\u003e\n\u003ctd\u003eSamson STL transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10Hz to 35kHz (0.2dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eConnections\u003c\/td\u003e\n\u003ctd\u003e1\/4in and XLR input and output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGround switch\u003c\/td\u003e\n\u003ctd\u003eGround Lift switch to eliminate hum\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eAll-metal, impact-resistant 14-gauge steel housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SAMSON MLI1 is a practical, value-focused isolation box for anyone who needs to stop ground loop hum and carry line signals over long runs without coloration. It is best for live and small-studio contexts where one reliable, passive channel will do the job; its durable build and very flat frequency response make it a sensible purchase for engineers who prioritize clean signal isolation over active features.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan the MLI1 remove ground loop hum?\u003c\/strong\u003e\u003cbr\u003eYes. The combination of the STL transformer and the Ground Lift switch isolates the input and output to eliminate hum caused by ground loops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require power to operate?\u003c\/strong\u003e\u003cbr\u003eNo. The MLI1 is a passive isolation box and does not need external power or batteries to function.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the unit suitable for long cable runs?\u003c\/strong\u003e\u003cbr\u003eYes. Converting unbalanced signals to balanced via the transformer and XLR output makes it suitable for long cable runs with preserved signal quality.\u003c\/p\u003e","brand":"SAMSON","offers":[{"title":"Default Title","offer_id":48611568156891,"sku":"B07FT3JV9T","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61xKifzyXcL._AC_SL1500.jpg?v=1778421952","url":"https:\/\/gearmusthave.com\/products\/samson-mli1-mono-passive-isolation-box-eliminates-ground-loop-hum","provider":"GearMustHave","version":"1.0","type":"link"}