Experience the next level of professional audio enhancement with the Pro MPA II Professional Two Channel Microphone Preamplifier from the renowned brand, Art Pro Audio. This high-performance, durable preamplifier is designed to radically improve the performance of your high-quality dynamic or ribbon microphones, making it an indispensable tool for musicians and audio engineers. Each microphone input circuit in this versatile preamplifier comes with selectable 48v phantom power and features variable input impedance. This unique feature allows you to customize the overall performance of your microphones, providing you with a richer, warmer sound that is characteristic of tube preamplifiers. The Pro MPA II is designed for dual mono or stereo operation, with the added benefit of selectable mid/side mic support. This allows for the summing of the adjacent channel, enabling the decoding of left/right signals for a more immersive audio experience. For a wider variation of preamp tone and performance, the Pro MPA II operates at either a low or high plate voltage on the two integrated hand-selected 12AX7 tubes. This feature offers you more control over your sound, allowing you to fine-tune your audio output to your specific needs. The Pro MPA II is not just about high-quality audio performance. It also boasts a visually appealing design with large back-lit analog VU output meters that display output levels. Multi-colored LED arrays show tube gain, adding a touch of modern sophistication to your audio equipment setup. Housed in a standard 2u space rack-mountable steel chassis with a CNC routed black anodized aluminum face panel, the Pro MPA II promises years of reliable operation. Whether you're in the studio, a production facility, or on the road for live sound reinforcement, the Pro MPA II Professional Two Channel Microphone Preamplifier is your reliable partner for superior audio performance. Includes: Pro MPA II Professional Two Channel Microphone Preamplifier - AC Power Cable - Art Pro Audio 3 Year Limited Warranty Features: Variable Input Impedance For Flexible Microphone Voicing (150 ohms To 2400 ohms) Large VU Meters Discrete Class-A Input Microphone Preamplifier Extremely Low Total Harmonic Distortion (THD) Additional Front Mounted Instrument Input Jack Operates at +4dbm/-10dbv Output Automatic Instrument Input Selection Selectable Plate Voltage Backlit Function Switches Low Noise at Lower Gain Settings Wide Frequency Response Supports Mid/Side Miking Technique Selectable Stereo/Dual Operation of Output Controls Specifications: Frequency Response: 15Hz to 48kHz (+0, -1dB) @ normal plate voltage 15Hz to 120kHz (+0, -1dB) @ high plate voltage Total Harmonic Distortion: <0.005% (typical) CMRR: > 90dB Dynamic Range: > 110dB ( A weighted) Equivalent Input Noise: -129dBu (XLR, A weighted) Input Impedance: 150-3000 Ohm adjustable (XLR), > 800K Ohm (Instrument) Maximum Gain: 75dB Maximum Input Level: +19dBu (cannon) Maximum Instrument Input: +17dBu Maximum Output Level: +27dBu (XLR) Output Impedance: <47 Ohm (XLR) Meter Calibration: 0 VU = +4dBu outupt (+4dB mode) / 0 VU = -10dBV output (-10dB mode) High Pass Filter: Single pole, 10-200 Hz adjustable Power Requirements: USA - 105 to 125 VAC / 60 Hz Export units configured for country of destination Dimensions: 8.75 x 19 x 3.5 (222 x 482 x 88mm) Weight: 10.5 lb (4.5kg)