{"product_id":"art-mpa-iii-preamplifiers","title":"ART Pro MPA III 2-Channel Multivoice Tube Preamplifier","description":"\u003ch2\u003eART Pro MPA III Two-Channel Multivoice Tube Preamplifier\u003c\/h2\u003e\n\n\u003cp\u003eThe ART Pro MPA III is a two-channel, rackmount tube preamplifier that delivers up to 70 dB of gain with selectable 12AT7 tube or solid state signal paths, giving recording engineers and producers hands-on control over tone character in a single 2U unit. Designed as a direct upgrade to the built-in preamps on a mixer or audio interface, the Pro MPA III handles both XLR microphone and 1\/4\" instrument inputs on each channel, making it equally at home tracking vocals, guitars, and acoustic instruments.\u003c\/p\u003e\n\n\u003cp\u003eFor engineers seeking the best 2-channel tube preamp for home studio and project recording, the Pro MPA III delivers an exceptionally wide variable impedance range - from 600 ohms to 80 kilohms - that transforms the tonal response of dynamic and ribbon microphones without additional outboard gear. The Character switch compensates for transformer non-linearity and improves vocal intelligibility, a feature that separates this unit from budget alternatives. Producers looking for an affordable rack mic preamp with tube warmth will find the Pro MPA III punches well above its price point.\u003c\/p\u003e\n\n\u003cp\u003eBuilt around discrete Class A FET microphone preamps and a universal internal power supply compatible with 100-240V mains, the Pro MPA III integrates cleanly into professional and project studio environments worldwide. Selectable +4 dBu and -10 dBV operation ensures compatibility with both professional-grade outboard gear and consumer audio interfaces, while analog VU meters provide real-time level monitoring without relying on software metering. The Pro MPA III joins the Pro Channel III and Pro VLA III in ART's flagship analog processing lineup.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features of the ART Pro MPA III Rackmount Tube Preamp\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelectable 12AT7 Tube or Solid State Voicing:\u003c\/strong\u003e The Voice switch enables instant switching between warm tube character and a clean solid state signal path, giving engineers tonal flexibility without recabling or additional hardware.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiscrete Class A FET Microphone Preamps:\u003c\/strong\u003e Delivers ultra-low noise performance with an Equivalent Input Noise rating of -128 dBu (A-weighted), preserving detail and transient accuracy across the full frequency range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Impedance (600 ohm to 80 kilohm):\u003c\/strong\u003e Dramatically reshapes the response of dynamic and ribbon microphones, functioning as a powerful tonal tool built directly into the signal chain.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharacter Switch for Vocal Intelligibility:\u003c\/strong\u003e Enhances low and high frequency content to compensate for microphone transformer non-linearity, improving presence and clarity on vocal recordings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstrument-Level DI Inputs:\u003c\/strong\u003e Each channel accepts a 1\/4\" instrument signal at up to +17 dBu, enabling direct recording of guitar, bass, and keyboards without an external DI box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e+4 dBu \/ -10 dBV Switchable Operation:\u003c\/strong\u003e Ensures compatibility with professional studio hardware and consumer-grade audio interfaces in the same signal chain.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog VU Meters:\u003c\/strong\u003e Provide real-time visual gain staging feedback on both channels, supporting accurate level management during tracking and overdub sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Internal Power Supply:\u003c\/strong\u003e Accepts 100-240V at 50\/60 Hz, supporting worldwide use without an external adapter or voltage converter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e 2U Rackmount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Impedance (XLR):\u003c\/strong\u003e 600 ohm - 80 kilohm (variable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Impedance (1\/4\" Instrument):\u003c\/strong\u003e 1 megohm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Impedance (XLR):\u003c\/strong\u003e Less than 47 ohm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Input Level (XLR):\u003c\/strong\u003e +19 dBu\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Input Level (Instrument):\u003c\/strong\u003e +17 dBu\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Output Level:\u003c\/strong\u003e +27 dBu (XLR and 1\/4\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Gain:\u003c\/strong\u003e 70 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response (Tube Mode):\u003c\/strong\u003e 15 Hz - 48 kHz (+0, -1 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response (Solid State Mode):\u003c\/strong\u003e 15 Hz - 120 kHz (+0, -1 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion:\u003c\/strong\u003e Less than 0.005% (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEquivalent Input Noise:\u003c\/strong\u003e -128 dBu (XLR, A-weighted)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCMRR:\u003c\/strong\u003e Greater than 50 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Requirements:\u003c\/strong\u003e 100-240V~ 50\/60 Hz, 25W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Connector:\u003c\/strong\u003e Rear-mounted IEC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (H x W x D):\u003c\/strong\u003e 3.5\" x 19\" x 8.75\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 10.5 lbs (4.7 kg)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ART","offers":[{"title":"Default Title","offer_id":46165556232389,"sku":"ARTP-MPAIII","price":519.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3085\/3829\/files\/e7cdd55b3746f630cd4fa5574e00c4f2.jpg?v=1777661799","url":"https:\/\/avlgear.com\/products\/art-mpa-iii-preamplifiers","provider":"AVLGEAR","version":"1.0","type":"link"}