{"product_id":"behringer-73-microphone-line-preamplifier-500-series-module","title":"Behringer 73 Microphone Line Preamplifier 500 Series Module","description":"\u003ch2\u003eBehringer 73 Microphone Line Preamplifier 500 Series Module\u003c\/h2\u003e\n\n\u003cp\u003eBehringer 73 is a 500 series microphone and line preamplifier designed for professional recording and audio production environments. It enables microphone and line signal amplification for engineers and studio workflows, supporting recording chains where precise gain control and transformer-based amplification are required. This makes it ideal for 500 series rack systems used in studio tracking, mixing, and broadcast applications.\u003c\/p\u003e\n\n\u003cp\u003eThe module operates as a Class A discrete preamplifier with transformer-balanced input and output stages. It integrates stepped gain control, trim adjustment, and switchable input configurations for compatibility with microphone and line sources.\u003c\/p\u003e\n\n\u003cp\u003eIn practical use, it can be installed in standard 500 series racks to provide front-end signal amplification for microphones and instruments. Its switching and gain architecture supports studio recording, voice capture, and instrument tracking workflows.\u003c\/p\u003e\n\u003cbr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e500 Series Microphone Preamplifier:\u003c\/strong\u003e Compact preamp module designed for standard 500 series racks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass A Signal Path:\u003c\/strong\u003e Fully discrete Class A circuit architecture for signal amplification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMidas Transformers:\u003c\/strong\u003e Custom-built transformer-balanced input and output stages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStepped Gain Control:\u003c\/strong\u003e Electronically controlled resistor-stepped rotary gain switch with up to eighty decibels of gain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Input Handling:\u003c\/strong\u003e Supports microphone and line input sources with selectable gain ranges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Trim Control:\u003c\/strong\u003e Output trim control with phantom power switch integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Monitoring:\u003c\/strong\u003e Signal indicator LED and phantom power status indication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront and Rear Input Selection:\u003c\/strong\u003e Switchable front or rear input routing for flexible rack integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIlluminated Control Switches:\u003c\/strong\u003e Phase, impedance selection, and input selection switches with illumination\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransformer Balanced I O:\u003c\/strong\u003e Balanced signal connections through transformer-coupled circuitry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cstrong\u003eAudio Inputs\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eMicrophone\u003c\/strong\u003e\u003cbr\u003e\nType: XLR and 1\/4 inch TRS combi socket, transformer balanced front\u003cbr\u003e\nConnection to 500 series rack input connector, transformer balanced rear\u003cbr\u003e\nImpedance: 1200 Ω \/ 300 Ω, balanced\u003cbr\u003e\nMax input level: +10 dBu\u003cbr\u003e\nSensitivity: -20 dB to -80 dB in 5 dB steps\u003cbr\u003e\nMic EIN @ 80 dB gain, 22 Hz to 22 kHz: -125 dBu unweighted\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eLine\u003c\/strong\u003e\u003cbr\u003e\nType: XLR and 1\/4 inch TRS combi socket, transformer balanced front\u003cbr\u003e\nConnection to 500 series rack input connector, transformer balanced rear\u003cbr\u003e\nImpedance: \u0026gt; 4 kΩ, balanced\u003cbr\u003e\nMax input level: +28 dBu\u003cbr\u003e\nSensitivity: -20 dB to +10 dB in 5 dB steps\u003cbr\u003e\nNoise at unity gain, 22 Hz to 22 kHz: -83 dBu unweighted\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eAudio Outputs\u003c\/strong\u003e\u003cbr\u003e\nType: Connection to 500 series rack output connector, transformer balanced rear\u003cbr\u003e\nImpedance: \u0026lt; 100 Ω balanced\u003cbr\u003e\nMax output level: +28 dBu with 100 kΩ load, +26 dBu with 600 Ω load\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eSystem Specifications\u003c\/strong\u003e\u003cbr\u003e\nFrequency response: 20 Hz to 20 kHz, ±0.5 dB\u003cbr\u003e\nDistortion (THD+N): \u0026lt;0.07%, 50 Hz to 20 kHz, +4 dBu\u003cbr\u003e\nNoise: -83 dB, 22 Hz to 22 kHz unweighted\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eControls\u003c\/strong\u003e\u003cbr\u003e\nButtons: Phase\/Polarity reverse\u003cbr\u003e\nLo Z: 1200 Ω \/ 300 Ω, operates on the mic input only\u003cbr\u003e\nFR \/ R: Switches between the 500 series rack input and front combi connectors\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eControls\u003c\/strong\u003e\u003cbr\u003e\nRotary sensitivity switch: +10 to -80 dB in 5 dB steps\u003cbr\u003e\nTrim control: -20 dB to +5 dB with unity gain center detent\u003cbr\u003e\n+48 V phantom power: Press trim control knob to enable or disable\u003cbr\u003e\nOff = \u0026lt; -25 dBu, Green = \u0026gt; -25 dBu, Red = \u0026gt; +26 dBu\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003ePower Requirements\u003c\/strong\u003e\u003cbr\u003e\nVoltage: +16 V, -16 V and +48 V\u003cbr\u003e\nPower consumption: +16 V ≤ 200 mA, -16 V ≤ 15 mA\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003cbr\u003e\nStandard operating temperature range: 5 °C to 45 °C (41 °F to 113 °F)\u003cbr\u003e\nDimensions (H x W x D): 132.1 x 37.9 x 176.4 mm\u003cbr\u003e\n(5.2 x 1.5 x 6.9\")\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e\n1.1 kg (2.4 lbs)\u003cbr\u003e","brand":"Behringer","offers":[{"title":"Default Title","offer_id":45926176129221,"sku":"BEHR-73","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3085\/3829\/files\/1-behringer-73_98a9d1af-d185-497b-88f3-66bd7cb4b11c.jpg?v=1772582522","url":"https:\/\/avlgear.com\/products\/behringer-73-microphone-line-preamplifier-500-series-module","provider":"AVLGEAR","version":"1.0","type":"link"}