{"product_id":"radial-j48-1-channel-active-48v-direct-box","title":"Radial J48 1-channel Active 48v Direct Box","description":"[custom_html]\n\u003cdiv class=\"product-info__description__brand\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-info__description__text\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eActive 48-volt Phantom-powered Direct Box\n\u003c\/span\u003e\n\u003c\/div\u003e\n[\/custom_html]\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4\u003eA Great-sounding Active Direct Box\u003c\/h4\u003e\n\u003cp\u003e\nOver the past quarter century, sound systems and instruments have evolved dramatically — and so have listeners. High-fidelity sound is now expected. Only recently have we begun to truly appreciate the importance of a high-quality direct box. A great DI must deliver wide, distortion-free frequency response and the dynamic range required for today’s powerful instruments.\n\u003c\/p\u003e\n\n\u003ch4\u003eRadial J48 at a Glance\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eActive 48-Volt phantom powered direct box\u003c\/li\u003e\n  \u003cli\u003eMinimal power draw with high rail voltage\u003c\/li\u003e\n  \u003cli\u003eWill not choke when driven hard\u003c\/li\u003e\n  \u003cli\u003eLow inter-modulation distortion\u003c\/li\u003e\n  \u003cli\u003eInnovative merge function\u003c\/li\u003e\n  \u003cli\u003e80Hz highpass roll-off filter reduces mud and increases headroom\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThe Radial J48 is an active direct box designed to work efficiently within the limited current supplied by 48-Volt phantom power, while still delivering the pure and natural sound of the instrument. A unique switch-mode supply boosts the internal voltage rails, allowing an input signal of up to 10V with no noticeable distortion.\n\u003c\/p\u003e\n\n\u003ch4\u003eWill Not Choke When Driven Hard\u003c\/h4\u003e\n\u003cp\u003e\nThe J48’s primary design goal was massive headroom without sacrificing sound quality. Phantom power is converted using an ultra-efficient digital switch-mode supply that steps the internal rail voltage up to 10 volts. This allows the J48 to handle signals up to 9 volts without choking. To maximize available power, non-essential components such as LEDs are disabled during operation, reserving energy for the audio circuit.\n\u003c\/p\u003e\n\n\u003ch4\u003eLower Harmonic Distortion\u003c\/h4\u003e\n\u003cp\u003e\nInside the J48 are oversized capacitors providing ample current storage for clean, unobstructed power. Increased headroom results in dramatically lower phase distortion, significantly reduced harmonic distortion, and extremely low inter-modulation distortion. These engineering choices lead to superior audio performance.\n\u003c\/p\u003e\n\n\u003ch4\u003eInnovative Merge Function\u003c\/h4\u003e\n\u003cp\u003e\nIn addition to great tone, the J48 introduces functions that enhance creativity and flexibility. Alongside the standard 1\/4\" input and thru connections, the Merge function converts the thru output into a second input. This sums stereo sources such as keyboards or CD players into mono, ideal when mixer inputs are limited. A -15dB pad is also available for high-output instruments.\n\u003c\/p\u003e\n\n\u003ch4\u003eReduced Hum and Increased Headroom\u003c\/h4\u003e\n\u003cp\u003e\nTo tame low-end rumble and excessive resonance, the J48 includes an 80Hz high-pass filter. Since low frequencies consume far more RMS power, removing unnecessary lows increases dynamic handling by 3dB — doubling the available headroom. This both cleans up the sound and improves system stability.\n\u003c\/p\u003e\n\n\u003cp\u003e\nLike all Radial products, the J48 is built for the rigors of professional use, featuring a welded I-beam construction for long-lasting durability.\n\u003c\/p\u003e\n\u003ch4\u003eWhat Radial Says...\u003c\/h4\u003e\n\u003ch4\u003eHigh-Performance Active Direct Box\u003c\/h4\u003e\n\u003cp\u003e\nThe J48 is a high-performance active direct box built for live concert touring and professional studio environments. It effortlessly handles extreme transients without distortion, delivering the pure, natural sound of your instrument.\n\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eExceptional headroom \u0026amp; dynamic range\u003c\/li\u003e\n  \u003cli\u003eRetains the natural sound of the instrument\u003c\/li\u003e\n  \u003cli\u003eMerge switch sums stereo instruments to mono\u003c\/li\u003e\n  \u003cli\u003ePowered by 48V phantom — no batteries required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigher Rail Voltage, Higher Headroom\u003c\/h4\u003e\n\u003cp\u003e\nMany active basses and guitars can output as much as 7 volts at full volume, easily overloading typical active DI boxes that only handle around 3 volts. The J48 solves this with a unique switching power supply that increases its internal rail voltage, allowing it to handle signals up to 9 volts. This dramatically boosts headroom, reduces distortion, and preserves the natural character of the instrument.\n\u003c\/p\u003e\n\n\u003ch4\u003eJ48 for Live Touring\u003c\/h4\u003e\n\u003cp\u003e\nOn stage, a DI’s primary job is to deliver your instrument’s signal cleanly from the stage to the mixing desk and PA system. The Radial J48 sends your tone across long cable runs without adding noise, distortion, or color — perfect for professional touring environments.\n\u003c\/p\u003e\n\n\u003ch4\u003eJ48 in the Studio\u003c\/h4\u003e\n\u003cp\u003e\nFor recording direct, the quality of the DI determines the quality of the track. The J48 excels at capturing deep, clean bass and pristine guitar tones, providing a pure signal that engineers love to work with.\n\u003c\/p\u003e\n\n\u003ch4\u003eReamping with the J48\u003c\/h4\u003e\n\u003cp\u003e\nReamping involves sending a previously recorded dry track back out through amps and pedals to create new tones. The J48 is ideal for capturing clean, accurate DI tracks that can be reamped later — a technique widely used by top recording professionals.\n\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n[tabs] [tab title=\"FEATURES\"]\n\u003ch4\u003eRadial J48 Features:\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWelded I-beam construction makes it impossible to torque the PC board, virtually eliminating cold solder joints — the No.1 cause of field failures.\u003c\/li\u003e\n  \u003cli\u003eInnovative “slide-in-place” XLR trace enables true I-Beam girder construction.\u003c\/li\u003e\n  \u003cli\u003eDigital switching power supply boosts internal rail voltage to 9 volts, preventing choking under large transients.\u003c\/li\u003e\n  \u003cli\u003eMilitary-grade PC board ensures maximum durability in harsh environments, with welded steel standoffs to prevent shifting.\u003c\/li\u003e\n  \u003cli\u003e-15dB pad allows extremely hot inputs (such as CD players) to be connected and balanced for long cable runs.\u003c\/li\u003e\n  \u003cli\u003eMomentary 48V Check LED flashes when the 80Hz filter is pressed to confirm phantom power is present.\u003c\/li\u003e\n  \u003cli\u003eMerge function converts the input \u0026amp; thru into left\/right inputs for mono summing at the XLR output, saving mixer channels.\u003c\/li\u003e\n  \u003cli\u003eInstrument input provides a clean, direct connection from the source.\u003c\/li\u003e\n  \u003cli\u003eThru-put connects to the instrument amplifier, with high input impedance to prevent loading.\u003c\/li\u003e\n  \u003cli\u003eBook-end design protects switches and connectors from impact.\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty baked enamel finish for long-term durability — 100% 14-gauge steel construction.\u003c\/li\u003e\n  \u003cli\u003e600-ohm balanced mic-level XLR output works with concert splitters and can drive 1000 feet without noise.\u003c\/li\u003e\n  \u003cli\u003ePolarity reverse switch flips between Pin-2 and Pin-3 hot, useful for correcting phase issues.\u003c\/li\u003e\n  \u003cli\u003e80Hz low-cut (highpass) filter reduces excessive bass, boosts headroom, and prevents runaway acoustic resonances.\u003c\/li\u003e\n  \u003cli\u003eGround lift disconnects ground at the XLR output to eliminate hum caused by ground loops.\u003c\/li\u003e\n  \u003cli\u003eNo-slip full bottom pad reduces vibration, improves isolation, and prevents movement on crowded stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e[\/tab] [tab title=\"SPECIFICATIONS\"]\u003c\/p\u003e\n\u003csection class=\"product-specs\"\u003e\n\u003csection class=\"product-specs\"\u003e\n\u003csection class=\"product-specs\"\u003e\n\u003ctable class=\"table table-striped\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n  \u003cth\u003eType\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003eActive DI\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eChannels\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e1\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003ePads\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e-15dB\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003ePolarity Switch\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003eYes\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eGround Lift\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003eYes\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eInputs\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e1 x 1\/4\"\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eOutputs\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e1 x XLR, 1 x 1\/4\" thru\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003ePower Source\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e48V Phantom Power\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eHeight\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e2\"\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eWidth\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e3.3\"\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eDepth\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e5\"\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eWeight\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003e1.55 lbs.\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n  \u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n  \u003ctd\u003e\n    \u003cdiv\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/div\u003e\n    \u003cspan\u003eR800 3001 UPC: 676101034079\u003c\/span\u003e\u003cbr\u003e\n  \u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003c\/section\u003e\n\u003c\/section\u003e\n\u003ca id=\"reviews\" class=\"anchor\"\u003e\u003c\/a\u003e\n\u003csection class=\"product-reviews\"\u003e\u003cheader class=\"product-reviews__header\"\u003e\u003c\/header\u003e\u003c\/section\u003e\n[\/tab][\/tabs]","brand":"Radial","offers":[{"title":"Default Title","offer_id":47562209984726,"sku":null,"price":5995.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/1001\/files\/radial-j48-1-channel-active-48v-direct-box-1.jpg?v=1764994422","url":"https:\/\/www.musicexperience.co.za\/products\/radial-j48-1-channel-active-48v-direct-box","provider":"Music Experience","version":"1.0","type":"link"}