{"product_id":"rdl-ru-mlb4","title":"RDL RU-MLB4 – 4x4 Mic\/Line Dante Network Interface","description":"\u003ch2\u003eWhat is the RDL RU-MLB4?\u003c\/h2\u003e\u003cp\u003eThe RDL RU-MLB4 is a 4 x 4 mic\/line Dante network interface that converts four microphone or line sources to Dante and returns four Dante channels to +4 dBu balanced line level. Automatic mic gain sets 40 dB for condenser mics and 60 dB for dynamic mics, so no user or installer gain adjustment is needed. It is built for equipment racks, closets, conference tables and shelves in commercial installations, powered from an external 24 Vdc supply.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/ru-mlb4.jpg\" alt=\"RDL RU-MLB4 mic\/line bi-directional Dante network interface\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eEach of the four inputs has a rear-panel selector that sets it to mic or line. In mic mode the balanced input supplies P48 phantom power, and the preamplifier gain sets itself to 60 dB for a dynamic microphone or 40 dB for a condenser, staying active whenever microphones are changed. In line mode the balanced terminals accept a +4 dBu source and separate unbalanced terminals accept a -10 dBV source, both with more than 18 dB of headroom. On the output side, four Dante channels are converted to +4 dBu balanced line level for a -18 dBFS network level, with crosstalk below the noise floor and noise more than 80 dB below operating level. Front-panel signal LEDs show audio on every input and received Dante channel, so setup can be confirmed without a networked computer. The RU-MLB4 is powered from an external 24 Vdc supply; the RU-MLB4P version adds PoE. RDL recommends the PS-24AS (USA) or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003eRDL PS-24AX\u003c\/a\u003e (international) supply. The all-metal Rack-Up enclosure can stand free, mount to a surface with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-sma1\"\u003eRU-SMA1 mounting plate\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-br1\"\u003eRU-BR1 bracket\u003c\/a\u003e, mount on DIN rail with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-dra-35r\"\u003eDRA-35R adapter\u003c\/a\u003e, or mount in a rack with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ru-hra1\"\u003eRU-HRA1\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-rc-1ur\"\u003eRC-1UR rack chassis\u003c\/a\u003e. It is engineered and built in the U.S.A. for continuous duty.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 x 4 Dante I\/O\u003c\/strong\u003e — Converts four mic or line inputs to Dante and four Dante channels to balanced line outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic mic gain\u003c\/strong\u003e — Sets 40 dB for condenser and 60 dB for dynamic microphones with no adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP48 phantom power\u003c\/strong\u003e — Phantom power is supplied on each input set to mic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMic or line per input\u003c\/strong\u003e — A rear-panel selector sets each input for microphone or line operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and unbalanced line inputs\u003c\/strong\u003e — Separate terminals accept +4 dBu balanced or -10 dBV unbalanced sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+4 dBu outputs\u003c\/strong\u003e — Balanced outputs interface directly with professional equipment with more than 18 dB of headroom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal LEDs\u003c\/strong\u003e — Per-channel LEDs confirm input and output audio during commissioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 Vdc powered\u003c\/strong\u003e — An external 24 Vdc supply powers the module and phantom loads.\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\u003eHuddle room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eGovernment space\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-MLB4 (24 Vdc 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\u003eGain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic; 40 dB for condenser mics, 60 dB for dynamic mics\u003c\/td\u003e\n\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-56 dBu (dynamic), -36 dBu maximum; -36 dBu (condenser), -19 dBu maximum (unclipped), -14 dBu maximum (soft clipped)\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; 1 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePhantom Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP48, 48 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eStandard for Phantom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEC 61938: 2013\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; 0.1%\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; -70 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; 70 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; 70 dB (20 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#f5f5f5\"\u003e\u003cstrong\u003eInputs (8): Balanced, detachable terminal block (4); Unbalanced, detachable terminal block (4)\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+4 dBu (balanced); -10 dBV (unbalanced)\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; 0.1%\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; -75 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; 75 dB (1 kHz, any line to any mic channel), \u0026lt; 70 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\u003eSelectors (4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMIC or LINE (rear panel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eIndicators (13)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower In (1); Output Signal LEDs (4); Input Signal LEDs (4); 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 @ 180 mA plus connected phantom loads, or PoE (RU-MLB4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePoE (RU-MLB4P)\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\u003eDo I need to set mic gain?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. Mic gain is automatic: 40 dB for condenser microphones and 60 dB for dynamic microphones.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan each input take a line-level source?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. A rear-panel selector sets each input to line, accepting +4 dBu balanced or -10 dBV unbalanced on separate terminals.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it powered?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eFrom an external 24 Vdc supply at 180 mA plus phantom loads. The RU-MLB4P adds PoE.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhich power supply should I use?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eRDL recommends the PS-24AS (USA) or PS-24AX (international) 24 Vdc supply.\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\u003eThis product is covered by a 7-year RDL warranty. For warranty claims, RMAs or support, contact Creation Networks at (888) 230-3661 or sales@creationnetworks.net.\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 conferencing and 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":68025749340396,"sku":"RU-MLB4","price":910.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/ru-mlb4.jpg?v=1793583326","url":"https:\/\/creationnetworks.net\/products\/rdl-ru-mlb4","provider":"Creation Networks","version":"1.0","type":"link"}