{"product_id":"rdl-ru-lb4p","title":"RDL RU-LB4P – 4x4 Line-Level Dante Network Interface with PoE","description":"\u003ch2\u003eWhat is the RDL RU-LB4P?\u003c\/h2\u003e\u003cp\u003eThe RDL RU-LB4P is a 4 x 4 line-level Dante network interface that converts four balanced or unbalanced line sources to Dante and four Dante channels to +4 dBu balanced outputs. Front-panel gain trimmers with dual-LED VU meters on every input make level matching quick without a computer. It runs on PoE with optional 24 Vdc hot standby, in an all-metal Rack-Up enclosure for racks, closets, tables and backboards.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/ru-lb4p.jpg\" alt=\"RDL RU-LB4P line-level bi-directional Dante network interface\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eEach input accepts the full range of unbalanced -10 dBV and balanced +4 dBu line-level sources, with an input range of -16 dBu to +12 dBu and more than 18 dB of headroom. A front-panel gain trimmer and dual-LED VU meter on each input set an operating level that preserves full headroom with the lowest noise floor. On the output side, four Dante channels are converted to +4 dBu balanced for -18 dBFS, so they interface directly with professional and commercial equipment without extra gain. Crosstalk between outputs is below the noise floor across the audio band, and the noise floor is more than 80 dB below operating level. Green signal LEDs show the level of each received Dante channel, which helps setup when no networked computer is at the rack. The RU-LB4P runs from a PoE switch (Class 0, IEEE 802.3af); when an external 24 Vdc supply is also connected it runs from that supply and switches to PoE if the supply is lost. RDL recommends the PS-24AS (USA) or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003eRDL PS-24AX\u003c\/a\u003e (international) supply for standby power. Mounting options include the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-sma1\"\u003eRU-SMA1 mounting plate\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-br1\"\u003eRU-BR1 bracket\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-dra-35r\"\u003eDRA-35R DIN rail adapter\u003c\/a\u003e, \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRU-HRA1 rack mount\u003c\/a\u003e and \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-rc-1ur\"\u003eRC-1UR rack chassis\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x 4 line-level Dante I\/O\u003c\/strong\u003e — Four line inputs to Dante and four Dante channels to balanced line outputs in one module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-panel gain trims\u003c\/strong\u003e — Each input has a gain trimmer for precise level matching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-LED VU meters\u003c\/strong\u003e — Per-input metering shows the correct operating level at a glance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced or unbalanced sources\u003c\/strong\u003e — Inputs accept -10 dBV unbalanced or +4 dBu balanced line levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+4 dBu outputs\u003c\/strong\u003e — Balanced outputs drive professional equipment directly with more than 18 dB of headroom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow noise and crosstalk\u003c\/strong\u003e — Output noise is better than 80 dB below operating level, with crosstalk below the noise floor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoE with hot standby\u003c\/strong\u003e — Runs on PoE alone or with a 24 Vdc supply and automatic failover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Up mounting\u003c\/strong\u003e — Free-standing, surface, DIN rail or rack mounting with RDL Rack-Up accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable border=\"1\" cellpadding=\"6\" style=\"border-collapse:collapse;border-color:#ddd;width:100%;min-width:300px;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:44%\"\u003e\n\u003ccol style=\"width:56%\"\u003e\n\u003c\/colgroup\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRU-LB4P (PoE model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eNetwork Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRJ45 with Link and Speed indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDigital Audio Ethernet Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDante\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eTransmission Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eSample Rates Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44.1 kHz, 48 kHz (default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eBit Depth Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eAudio Operating Levels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-18 dBFS = +4 dBu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#f5f5f5\"\u003e\u003cstrong\u003eInputs (4): Balanced, detachable terminal block\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eInput Level for +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-16 dBu to +12 dBu, +22 dBu maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 20 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Hz to 20 kHz (± 0.5 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eNoise below +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; -80 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCMRR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 60 dB (50 Hz to 120 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 85 dB (20 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eHeadroom above +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 18 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#f5f5f5\"\u003e\u003cstrong\u003eOutputs (4): Balanced, detachable terminal block\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eOutput Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+4 dBu (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 Ω balanced; 75 Ω unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Hz to 20 kHz (± 0.5 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eNoise below +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; -80 dB (output active); \u0026lt; -95 dB (outputs muted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 85 dB (20 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eHeadroom above +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 18 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eIndicators (17)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower In (1); Output Signal LEDs (4); Input Dual-LED VU Meters (8); Network Sys and Sync (2), Ethernet Link and Speed (2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePower Connections (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Jack; Detachable Terminal Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eAmbient Operating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32° F to 104° F (0° C to 40° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 Vdc @ 140 mA plus connected loads, or PoE (RU-LB4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePoE (RU-LB4P)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass 0, IEEE 802.3af\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.8\" (15 cm) W; 1.7\" (4.3 cm) H; 5.2\" (13.2 cm) D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat sources can it accept?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eBalanced +4 dBu or unbalanced -10 dBV line-level sources, with an input range of -16 dBu to +12 dBu and +22 dBu maximum.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow do I set input levels?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eUse the front-panel gain trimmer on each input while watching its dual-LED VU meter.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it powered?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eBy PoE Class 0 (IEEE 802.3af), an external 24 Vdc supply at 140 mA plus loads, or both with automatic failover to PoE.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes it accept microphones?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. The RU-LB4P is a line-level interface. RDL's RU-MLB4P adds microphone inputs with phantom power.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it mounted?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIt is a Rack-Up module for free-standing, surface, DIN rail or rack mounting with RDL Rack-Up accessories.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does it carry?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eRDL's product page does not list warranty terms for this model. Contact Creation Networks at (888) 230-3661 for current warranty and support details before you order.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan Creation Networks help design the system?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Our team specifies, programs and installs Dante audio systems for commercial projects nationwide. Call (888) 230-3661 for a quote or design review.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025749143788,"sku":"RU-LB4P","price":870.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/ru-lb4p.jpg?v=1793583326","url":"https:\/\/creationnetworks.net\/products\/rdl-ru-lb4p","provider":"Creation Networks","version":"1.0","type":"link"}