ART Pro Audio Tube MP/C PreAmplifier/Compressor - Long & McQuade Music Educator Site
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ART Pro Audio Tube MP/C PreAmplifier/Compressor

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SKU: # 359396
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TUBEMP/C

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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.

Features
• 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

Specifications
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)

Great amount of gain. Very nice compressor0 of 0 customers found this review helpful

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Product ExperienceI own it
Closest StoreKanata, Ontario
I got this to use as a mic preamp for a condensor mic. Wanting to have lots of gain added before my audio interface, and hardware compression. My original use was for voice. But I found the preamp and compressor to be very useful for musical application. Like I can plug my bass guitar into this and then directly into my USB audio interface and record it, and have pretty descent sound. The hardware compressor sounds pleasing for the kinds of bass lines i was working on anyway. I was happy with the stock tube sound. But I got a Sovtek tube. I find these to be somewhat "less" headroom and crunch up easier in my guitar amplifier. So using this in the ART Tube MP/C really brings out that "tube-y" sound. Even with less compression, when you drive up the tube gain knob you are able to hear that tube compression as your input signal is being squashed from the non linearity of the tube. Though it did require a bit of fiddling and experimentation to learn the sweet spot settings for the knobs. But this is like any effect or preamp device with knobs. You need to be invested in trying to figure it out to get the most out of it.
Posted by anonymous on Aug 12, 2019
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Great value1 of 1 customers found this review helpful

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Product ExperienceI own it
Closest StoreToronto (Bloor St.), Ontario
For less than $100 you get a good, noiseless preamp and a simple compressor that works very well with most instruments. This unit is most useful with passive pickups for acoustic instruments that have a weak signal (e.g. surface mount pickups), and also works well for recording electric guitar or bass without worrying about peak levels all the time. With a keyboard it can even out the tone and add color to the sound. Once again, a very good device for the price. The build quality is also very good, like all ART equipment.
Posted by François on May 14, 2017
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Not bad2 of 2 customers found this review helpful

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Product ExperienceI own it
Closest StoreSt. John's, Newfoundland and Labrador
It has some creative uses but if I had my time and money back I'd save it for a more versatile compressor worth investing in for the long haul. The preamp isn't really that special either, but it is usable. It can add a different character to your audio but I find it a little too much colour. I do like experimenting with it to drive a guitar. The compressor is not so impressive in my experience - but play with it and find an application for it. It's not an all around tool that can be used on everything, as far as I'm concerned. I like the tube tone, it's not bad - just not great. I didn't expect a miracle, and was still underwhelmed.
Posted by anonymous on Aug 20, 2015
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