{"product_id":"behringer-676-tube-microphone-preamplifier-fet-compressor-rack-processor","title":"Behringer 676 Tube Microphone Preamplifier FET Compressor Rack Processor","description":"\u003ch2\u003eBehringer 676 Tube Microphone Preamplifier FET Compressor Rack Processor\u003c\/h2\u003e\n\n\u003cp\u003eBehringer 676 is a tube microphone preamplifier and FET-style compressor designed for studio recording, mixing, and broadcast signal processing. It enables microphone, line, and instrument signal amplification with integrated dynamic control for recording engineers and production environments. This makes it ideal for studio signal chains where tube preamplification and compressor control are required.\u003c\/p\u003e\n\n\u003cp\u003eThe unit combines a vacuum tube preamplifier stage with a FET-style compressor in a single rackmount processor. Transformer-balanced inputs and outputs, tube amplification stages, and switchable equalization allow integration into recording and mixing workflows.\u003c\/p\u003e\n\n\u003cp\u003eIn practical operation, the preamplifier and compressor sections can function independently or together within a signal chain. Its control architecture supports microphone recording, instrument processing, and studio outboard compression applications.\u003c\/p\u003e\n\u003cbr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Microphone Preamplifier:\u003c\/strong\u003e Vacuum tube microphone and line preamp stage based on classic studio designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFET Style Compressor:\u003c\/strong\u003e Integrated compressor circuit modeled after classic FET compressor architecture\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\u003eSelectable Input Sources:\u003c\/strong\u003e Microphone, line, and Hi-Z instrument input options\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Circuit Design:\u003c\/strong\u003e Uses 12AX7\/ECC83S and 12AT7\/6072 vacuum tubes for signal amplification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Band Shelving Equalizer:\u003c\/strong\u003e Integrated EQ section with selectable frequency filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Signal Routing:\u003c\/strong\u003e Preamplifier and compressor sections can operate independently or together\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVintage Style Metering:\u003c\/strong\u003e Analog meter displays gain reduction or output level\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRackmount Construction:\u003c\/strong\u003e Two rack unit chassis designed for studio racks and portable installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Power Supply:\u003c\/strong\u003e Auto-ranging switch-mode power supply supports global mains voltages\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\u003eMic\u003c\/strong\u003e\u003cbr\u003e\nType: XLR, transformer balanced\u003cbr\u003e\nImpedance: 500 Ω \/ 2 kΩ\u003cbr\u003e\nMax input level: +14 dBu pad in, -1 dB pad out\u003cbr\u003e\nCMRR: Typically \u0026gt; 90 dB @ 1 kHz, maximum gain\u003cbr\u003e\nFrequency response: 20 Hz - 20 kHz ±1 dB\u003cbr\u003e\nEIN noise at maximum gain: -122 dBu, 22 Hz - 22 kHz unweighted\u003cbr\u003e\nDistortion (THD+N): \u0026lt;0.25% 50 Hz - 20 kHz, +4 dBu output\u003cbr\u003e\nMaximum gain: +64 dB\u003cbr\u003e\nPad: Toggle switch, 0 dB \/ -15 dB\u003cbr\u003e\n48 V: Toggle switch, applies +48 V phantom power to the mic input XLR\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eLine\u003c\/strong\u003e\u003cbr\u003e\nType: XLR, transformer balanced\u003cbr\u003e\nImpedance: 15 kΩ\u003cbr\u003e\nMax input level: +30 dBu\u003cbr\u003e\nCMRR: Typically \u0026gt; 80 dB @ 1 kHz, unity gain\u003cbr\u003e\nFrequency response: 20 Hz - 20 kHz ±1 dB\u003cbr\u003e\nNoise at unity gain: -79 dBu, 22 Hz - 22 kHz unweighted\u003cbr\u003e\nDistortion (THD+N): \u0026lt;0.25% 50 Hz - 20 kHz, +4 dBu output\u003cbr\u003e\nMaximum gain: +20 dB\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eHi-Z\u003c\/strong\u003e\u003cbr\u003e\nType: 6.35 mm (1\/4\") TS jack, unbalanced\u003cbr\u003e\nImpedance: 47 kΩ \/ 2.2 MΩ\u003cbr\u003e\nMax input level: +12 dBu\u003cbr\u003e\nFrequency response: 20 Hz - 20 kHz ±1 dB\u003cbr\u003e\nEIN noise at maximum gain: -105 dBu, 22 Hz - 22 kHz unweighted\u003cbr\u003e\nDistortion (THD+N): \u0026lt;0.25% 50 Hz - 20 kHz, +4 dBu output\u003cbr\u003e\nMaximum gain: +44 dB\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eCompressor\u003c\/strong\u003e\u003cbr\u003e\nType: XLR, transformer balanced\u003cbr\u003e\nImpedance: 15 kΩ \/ 600 Ω\u003cbr\u003e\nMax input level: +30 dBu\u003cbr\u003e\nCMRR: Typically \u0026gt; 80 dB @ 1 kHz, unity gain\u003cbr\u003e\nFrequency response: 20 Hz - 20 kHz ±1 dB\u003cbr\u003e\nNoise at unity gain: -85 dBu, 22 Hz - 22 kHz unweighted\u003cbr\u003e\nDistortion (THD+N): \u0026lt;0.25% 50 Hz - 20 kHz unity gain, +4 dBu output\u003cbr\u003e\nMaximum gain: +40 dB\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eAudio Outputs\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003ePreamplifier\u003c\/strong\u003e\u003cbr\u003e\nType: XLR, transformer balanced\u003cbr\u003e\nImpedance: 90 Ω balanced\u003cbr\u003e\nMax output level: +21 dBu\u003cbr\u003e\nPhase reverse: Toggle switch, reverses the polarity of the output signal\u003cbr\u003e\nSplit\/Join: Toggle switch, join connects the preamp output directly to the compressor input\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eCompressor\u003c\/strong\u003e\u003cbr\u003e\nType: XLR, transformer balanced\u003cbr\u003e\nImpedance: 110 Ω balanced\u003cbr\u003e\nMax output level: +26 dBu\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eEqualiser\u003c\/strong\u003e\u003cbr\u003e\nLow frequency select: Toggle switch 70 Hz \/ 100 Hz \/ 200 Hz shelving\u003cbr\u003e\nLow frequency cut\/boost: Rotary switch -9 dB, -6 dB, -4.5 dB, -3 dB, -1.5 dB, 0 dB, +1.5 dB, +3 dB, +4.5 dB, +6 dB, +9 dB\u003cbr\u003e\nHigh frequency select: Toggle switch 4.5 kHz \/ 7 kHz \/ 10 kHz shelving\u003cbr\u003e\nHigh frequency cut\/boost: Rotary switch -9 dB, -6 dB, -4.5 dB, -3 dB, -1.5 dB, 0 dB, +1.5 dB, +3 dB, +4.5 dB, +6 dB, +9 dB\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eLimiting Amplifier (Compressor)\u003c\/strong\u003e\u003cbr\u003e\nAttack slow fast control: Range 800 µs to 20 µs\u003cbr\u003e\nRelease slow fast control: Range 1.1 s to 50 ms\u003cbr\u003e\nInput level: Off to unity gain\u003cbr\u003e\nOutput level: Off to +40 dB gain\u003cbr\u003e\nRatio: Rotary switch BP – true bypass, 1:1, 4:1, 8:1, 12:1, 20:1, All \u0026gt; 100:1\u003cbr\u003e\nMeter source select: Rotary switch, preamp output \/ gain reduction \/ compressor output\u003cbr\u003e\nVU Meter: -20 dB to +3 dB (0 VU = +4 dBu)\u003cbr\u003e\nMeter calibration trimmer: Set zero on the VU meter when in GR mode\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003ePower Requirements\u003c\/strong\u003e\u003cbr\u003e\nMains voltage: 100 - 240 V~, 50\/60 Hz\u003cbr\u003e\nPower consumption: 28 W max\u003cbr\u003e\nMains connector: Standard IEC receptacle\u003cbr\u003e\nFuse: T 1.6 A H 250 V\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eStandard operating temperature range\u003c\/strong\u003e\u003cbr\u003e\n5°C – 45°C (41°F – 113°F)\u003cbr\u003e\u003cbr\u003e\n\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003cbr\u003e\n88 x 160 x 483 mm\u003cbr\u003e\n(3.47 x 6.30 x 19.0\")\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e\n3.50 kg (7.71 lbs)\u003cbr\u003e","brand":"Behringer","offers":[{"title":"Default Title","offer_id":45926175703237,"sku":"BEHR-676","price":619.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3085\/3829\/files\/1-behringer-676_4f8f84b9-67c7-4003-b6d3-31493d759635.jpg?v=1772582502","url":"https:\/\/avlgear.com\/products\/behringer-676-tube-microphone-preamplifier-fet-compressor-rack-processor","provider":"AVLGEAR","version":"1.0","type":"link"}