{"product_id":"rdl-hr-mp2a","title":"RDL HR-MP2A – Dual Microphone Preamplifier, 48 V Phantom","description":"\u003ch2\u003eWhat is the RDL HR-MP2A?\u003c\/h2\u003e\u003cp\u003eThe RDL HR-MP2A is a dual-channel microphone preamplifier that converts two XLR microphone signals to balanced line level. Each preamplifier has front-panel gain, a 15 dB input pad, polarity reversal and a CLIP indicator, with switchable 48 V phantom for both channels. It operates as a stereo preamp or as two independent mono preamps and adds a summed mono output. It suits conference rooms, houses of worship and training rooms that need clean microphone gain ahead of a mixer, DSP or recorder.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/hr-mp2a.jpg\" alt=\"RDL HR-MP2A dual microphone preamplifier\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eGain on each channel is continuously adjustable from 20 dB to 60 dB using a front-panel control. The INPUT PAD switch attenuates the input by 15 dB, increasing the maximum input level from +5 dBu to above +20 dBu. A POLARITY switch reverses signal polarity when needed, and switchable 48 V phantom powers condenser microphones on both preamplifiers. The CLIP LED flashes when a peak comes within 3 dB of clipping, a threshold 17 dB above a normal +4 dBu output. Each preamplifier provides balanced outputs on a detachable terminal block and a 1\/4 in TRS jack, and a summing amplifier provides a combined mono output. Balanced outputs may be wired unbalanced, and the rear panel provides a terminal block and power jack for 24 Vdc. THD and crosstalk are below the noise floor, with CMRR above 80 dB. The half-rack-width shielded metal enclosure can stand alone or mount in an RDL rack adapter. RDL recommends the PS-24AS power supply for the USA or the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e for international installations; the supply is not included.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo independent preamps\u003c\/strong\u003e — Separate gain, pad and polarity controls for each microphone channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 to 60 dB gain\u003c\/strong\u003e — Front-panel controls set continuous gain on each channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48 V phantom\u003c\/strong\u003e — Switchable 48 V phantom powers condenser microphones on both preamplifiers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15 dB input pad\u003c\/strong\u003e — The pad raises the maximum input level above +20 dBu for hot sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCLIP indicators\u003c\/strong\u003e — A CLIP LED per channel warns when peaks come within 3 dB of clipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTRS and terminal block outputs\u003c\/strong\u003e — Each preamp outputs on 1\/4 in TRS and terminal block, plus a mono sum.\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\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eBroadcast studio\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable style=\"border-collapse:collapse;width:100%;min-width:300px;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:40%\"\u003e\n\u003ccol style=\"width:60%\"\u003e\n\u003c\/colgroup\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eHR-MP2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInputs (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eXLR (3 pin, rear panel,1=GND, 2+, 3-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInput level (for +4 dBu output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e-56 dBu to 0 dBu (maximum gain without pad, minimum gain with pad)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eMaximum Input Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt;+5 dBu (input pad disabled), +22 dBu (input pad enabled)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 1 kΩ balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePhantom power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eSwitchable (both preamplifiers) 48 V phantom (IEC 61938: 2013)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eInput pad (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e15 dB nominal (1 per preamplifier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOutputs (5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eEach preamplifier (rear-panel): Detachable terminal block, ¼” TRS; Mono sum (rear-panel): detachable terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOutput level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+4 dBu balanced, -4 dBV unbalanced; +24 dBu maximum balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e150 Ω balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2 (1 and 2; may be used for stereo or as two separate mono preamplifiers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eGain Trim (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e20 dB to 60 dB (front panel adjustable; one for each preamplifier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e10 Hz to 70 kHz (± 0.5 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eTHD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eBelow noise floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCMRR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 80 dB (50 Hz to 5 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eResidual Noise (below +4 dBu output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt;-85 dB (20 Hz to 20 kHz, 40 dB gain, 150 Ω source); \u0026lt;-70 dB (20 Hz to 20 kHz, 60 dB gain, 150 Ω source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCrosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eBelow noise floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eIndicators (3)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003ePOWER LED (blue), CLIP (2, red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e24 Vdc @ 165 mA (190 mA with phantom), Ground-referenced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eRack-mount using optional rack adapters such as HR-RA2; or operate free-standing (feet included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eHeight: 1.7 in, 4.3 cm; Length: 8.6 in, 20.6 cm; Depth: 4.59 in, 11.66 cm\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\u003eHow does the HR-MP2A differ from the HR-MP2?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThe HR-MP2A has TRS and terminal block outputs, 48 V phantom for both preamps and CLIP LEDs. The HR-MP2 adds XLR outputs, a low-cut filter, 24 V or 48 V phantom per input and VU meters.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it run as a stereo preamplifier?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. It can be used for stereo or as two separate mono preamplifiers.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat power does it need?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e24 Vdc at 165 mA, or 190 mA with phantom, ground-referenced. RDL recommends the PS-24AS power supply for the USA or the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003ePS-24AX\u003c\/a\u003e for international installations; the supply is not included.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat is the frequency response?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e10 Hz to 70 kHz within ±0.5 dB.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is it mounted?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIt operates free-standing with the included feet, or mounts in a rack using an optional RDL adapter such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-hr-ra2\"\u003eHR-RA2\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-hr-hra1\"\u003eHR-HRA1\u003c\/a\u003e.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does the HR-MP2A 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 integrate the HR-MP2A?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Creation Networks supports system design, equipment selection and installation planning for RDL products nationwide. Call (888) 230-3661 for a quote or technical help.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025745735916,"sku":"HR-MP2A","price":483.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/hr-mp2a.jpg?v=1793583134","url":"https:\/\/creationnetworks.net\/products\/rdl-hr-mp2a","provider":"Creation Networks","version":"1.0","type":"link"}