ART Pro Audio Tube Preamp/Compressor with Universal Power Supply

SKU: # 778363   |   Model: # TUBEMP/CU   |    Product Reviews0 Reviews  Write a Review

Tube Preamp/Compressor with Universal Power Supply
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The Tube MP/C (PreAmplifier/Compressor) is a multi-purpose tool for audio engineering and recording. Two independent circuits featuring a tube-based analog preamplifier and a VCA-less compressor with optical gain reduction control are housed in one, convenient desk-top chassis. Used as a mic/line preamp or as a DI (direct) box, the Tube MP/C is designed to work seamlessly with any recording, sound-reinforcement, or electronic instrument setup. A R T's Tube MP/C circuitry is a hybrid design utilizing the latest, most advanced, solid-state and tube technology.

The preamplifier's active balanced solid-state input provides extremely low noise and excellent common mode rejection. The -inch high impedance input prevents loading of any connected device making the Tube MP/C perfect for DI or line level applications. The preamplifier's second stage 12AX7a tube runs on a regulated DC voltage providing an additional 20dB of gain.

The compression circuit features a VCA-less design and utilizes optical electronics (Vactrol) coupled with a 12AX7a vacuum tube gain stage for superior musical performance.

Tube-based mic/line preamplifier with up to 80 dB of gain
Hand-selected 12AX7a tube
Optical (VCA-less) compressor circuitry = transparent dynamics control
-inch unbalanced inputs and outputs
XLR balanced inputs and outputs
Transformer isolated XLR output
Selectable output range for Line/Instrument interface levels
LED meters for Tube Warmth, Gain Reduction and Output level
+48V phantom power
Phase reversal switch
Selectable release time settings
> 90dB dynamic range
Custom extruded aluminum chassis

Frequency Response: 30 Hz 60 kHz +/- 1 dB balanced output, 20 Hz 60 kHz +/- 1dB 1/4" output
Total Harmonic Distortion: < 0.1% @ max gain
CMMR: > 60 dB @ max gain
Equivalent Input Noise: -128dBu typical ("A" wtd., Shorted XLR balanced input, gain @ max)
Input Impedance: 1M Ω 1/4" input, 5K Ω XLR input
Input/Output Connections:
Input: XLR balanced or 1/4" balanced
Output: 1/4" unbalanced XLR balanced, transformer isolated.
Maximum Gain: +80 dB (balanced in-out, +64dB (unbalanced input, balanced output)
Maximum Input Level: unbalanced (Inst): +15 dBu, balancd (mic): +10 dBu
Maximum Output Level: +19 dBu (Line mode)
Output Impedance: XLR: < 600 Ω / 1/4": < 300 Ω
Low Cut Filter: -3 dB @ 70 Hz, 6dB/Octave
Phantom Power: Switch selectable, +48Volts DC, filtered, current limited
Power Requirements: 9VAC @ 1000mA (external)
Attack Time: < 1 ms (limit), 20 ms (comp.)
Release Time: 150ms (fast), 20ms 3s Program dependant (Auto)
Tube Type: Hand selected 12AX7a
Compressor Slope: 2:1 (Comp.) / 11:1 (Limit)

The Tube MP/CU has a universal external power supply designed to operate at 100 to 240V AC - 50/60 Hz. The power requirements for The Tube MP is 9 VAC @ 700ma (typ).

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