ART Tube MP/C - Tube Preamp/Opto Compressor/DI

ART Tube MP/C - Tube Preamp/Opto Compressor/DI

ART Tube MP/C - Tube Preamp/Opto Compressor/DI

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ART Tube MP/C - Tube Preamp/Opto Compressor/DI

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Product Highlights

  • Single Channel
  • Phantom Power
  • Optical Compressor
  • Low-Cut Filter
  • Additional Gain Switch
  • Phase Reverse
  • Output Level Control
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ART Tube MP/C overview

  • 1Description

The Tube MP/C from ART is a single channel tube preamp with a switchable optical compressor, all housed in a rugged desktop enclosure. Used as a microphone/line preamp or as a DI (direct) box, the unit is designed to work seamlessly with any recording, live sound, or electronic instrument setup. The preamp's active balanced solid-state input delivers extremely low noise and good common mode rejection.

The Hi-Z input prevents the loading of connected devices, perfect for DI or line level applications. The preamp's second stage 12AX7a tube runs on a regulated DC voltage providing an additional 20 dB of gain. The compression circuit features a VCA-less design and utilizes optical electronics coupled with a 12AX7a vacuum tube gain stage.

Tube-based microphone/line preamplifier with up to 80dB of gain
Hand-selected 12AX7a tube
Optical compressor circuitry for transparent dynamic control (no VCA)
XLR balanced inputs and outputs
Transformer isolated XLR output
1/4" unbalanced inputs and outputs
Selectable output range for line/instrument interface levels
LED meters for Tube Warmth, Gain Reduction and Output level
+48V phantom power
Phase reversal switch
Custom extruded aluminum chassis
UPC: 840402019466
In the Box
ART Tube MP/C - Tube Preamp/Opto Compressor/DI
  • External Power Supply
  • Three (3) Year Warranty
  • Table of Contents
    • 1Description

    ART Tube MP/C specs

    Number of Channels Single
    Inputs 1 x XLR Microphone
    1 x 1/4" TS phone Instrument (front panel)
    Outputs 1 x XLR
    1 x 1/4" TS phone
    Frequency Response 30Hz to 60kHz, +/-1.0dB XLR output
    20Hz to 60kHz, +/-1.0dB 1/4" output
    Noise EIN: -128dBu typical (A-weighted, shorted XLR balanced input, gain @ maximum)
    CMRR >60 dB @ maximum gain
    Gain Range +80dB (balanced in-out)
    +64dB (unbalanced input, balanced output)
    Maximum Input Level XLR: +10dBu
    1/4": +15dBu
    Maximum Output Level +19dBu (line mode)
    Input Impedance XLR: 5kΩ
    1/4": 1MΩ
    Phantom Power Switch selectable, +48VDC, filtered, current limited
    Threshold Range -20dB to +20dB
    Attack Time <1mSec (limit), 20mSec (comp)
    Release Time 150mSec (Fast), 20mSec to 3Sec program dependent (Auto)
    Slope 2:1 (Comp)
    11:1 (Limit)
    Sidechain No
    Power Requirements 9VAC @ 1000mA via included external adapter
    Dimensions (WxDxH) 5.9 x 6.5 x 1.75" (150 x 165 x 45mm)
    Weight 2.9 lb (1.3kg)
    Packaging Info
    Package Weight 2.95 lb
    Box Dimensions (LxWxH) 10.6 x 6.7 x 2.6"

    ART Tube MP/C reviews

    Tube MP/C - Tube Preamp/Opto Compressor/DI is rated 5.0 out of 5 by 3.
    Rated 5 out of 5 by from This preamp is an awesome, indispensable piece of kit for me I record live promo videos for professional musicals at one of the top musical theaters in the country. I get my audio from the house audio mixing board and straight into my Sony NX5U (the cable run is possibly 200', balanced). Unfortunately, the audio levels into my camera are typically about -36 dBFS and I had to digitally amplify those by at least 15 dB and sometimes up to 24 dB. That might be fine for used car dealership commercials, but for top Broadway voices it is almost a sin. Well, it is a sin, but hopefully not one of the deadly ones. Enter this ART Tube MP/C. With the permission of the house audio engineer (!) I can now boost the signal with the analog tube and have beautiful, warm audio in-camera at just the right levels. I don't have to amplify it in post and add EQ to synthesize a reasonable quality. I did hesitate a year or two in purchasing this. It uses an AC power supply (not DC). I was concerned about a possible ground loop, which at best could inject a hum into the camera, or worse, inject a hum into the PA, or something even worse. This unit contains circuitry to mitigate ground loops. I had also considered a battery powered field mixer, but those are generally much more expensive, and do not provide enough line level gain. I bypass the compressor for the performances. I get my audio in a mono channel with the voices and orchestra mixed in. I tried it for one performance, and while it sounded okay, the compressor lit on the orchestra too much and the vocals lost some of their beautiful dynamism. If you do VO, you might want to consider purchasing one of these. I tried it with various compressor settings using a decent Rode boom mic. I'm not a VO artist and normally can't stand listening to my voice. But I even liked my own voice with this setup! With this and even a fairly inexpensive ribbon mic, you might end up landing more VO gigs. Google a bit on this, and you will find people selling many other types of tubes you can install in this unit (voiding the warranty, I believe). My factory tube seems fine. But I am curious enough that I may purchase another ART Tube MP/C just to play with other tubes. There is a stand available (ART SM1) that attaches this nicely to my video tripod, or a mic stand. Handling: Since I use this in the field and it contains a tube, I purchased a 1400 Pelican foam case to reduce the chance of damage during transport.
    Date published: 2015-08-22
    Rated 5 out of 5 by from Excellent Tool for Maintaining Levels I use the Art Tube MP/C to maintain levels directly into a digital audio recorder on a microphone where artists range from speaking softly to screaming at the top of their lungs. I use another to process the live feed off a sound mixer in a club. These devices work without artifacts or hard compressed sounding audio. And excellent problem solver for under $100.
    Date published: 2013-10-13
    Rated 5 out of 5 by from Excellent multipurpose tool I use this box for tango DJ-ing. It solves several tasks at once: - Warms up the sound with vacuum tube stage - Gently smoothes down the peaks with compressor at -3Db with auto release - Serves as a mixer for my sound source and the mike - Directly injects the balanced line level signal into the powered speakes, daisy-chained to one another, allowing me to completely bypass inferior house mixer (in case where the speakers are passive I plug unbalanced output from this wonder-box into the main effects return socket to bypass as many amplification cascades as possible) ... and all this in a small, single, sturgy, eye-candy box for 100$... I am using it for about four months and still cannot quite believe my luck. Thank you, ART for this wonderful widget! Notes: 1. When plugging to house mixer, do use FX return socket, either main (preferred) or on channel strip. The less amplification cascades go to th equation, the better for your sound quality 2. Unlike it is stated in the manual, you CAN use mike input and instrument input simultaneously. When plugging the instrument input, feel until it clicks on the first notch, not fully inserted. In this position both inputs are active, and also, the instrument input seems to be padded a bit, probably to match better the mike. 3. Although my DJ card output is over +10DBv, the vacuum tube cascade still needs +20Db stage to be consistently driven into yellow/red zone without distortions, with its own amplification about +10Db. Without the preamp stage, the tube cascade distort wayyyy too much when driven past +10Db. 4. If the unit output is too high, use Mike level switch on the back, and still plug it into FX returns. The switch simply pads the output, nothing actually to do with Mike level, probably it should be renamed to -20Db to avoid confusion
    Date published: 2014-05-05
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