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PreSonus MP20 2-Channel Class A Preamp
Discrete mic/line preamp with summing buss. One rack space.
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Description
Docs
The MP20 Class-A Discrete, Twin Servo Microphone Preamplifier is a 2-channel microphone preamp with the same technical specifications as the M80. The low-impedance stereo mix buss can be used for full control over stereo imaging. The MP20 has a fully-loaded back panel featuring XLR balanced input/output connectors and TRS line inputs via Neutrik combo connectors as well as separate send and return jacks for inserting dynamics processors (such as The PreSonus ACP-22). Mix output connectors are XLR for balanced signals and TRS connectors for line level signals such as digital audio card inputs. The MP20 is housed in a single rack space steel chassis with a high-quality, blue anodized front panel.
This low impedance stereo mix bus can be used for full control over stereo imaging. It has a fully loaded back panel, featuring XLR balanced input/output connectors as well as separate send and return jacks for inserting dynamics processors (such as The PreSonus ACP-22). On the front panel a 1/4 in., high Z input is for instrument preamplification. The mix output connectors are XLR balanced providing connectivity for professional recording systems.
Features
Ý Class-A discrete, Dual Servo microphone preamplifier
Ý 20 dB pad
Ý 48 V phantom
Ý 80 Hz roll-off filter
Ý Polarity reverse
Ý IDSS control creates vintage warmth by adjusting even harmonic distortion
Ý 12-segment level meter
Ý High output headphone amplifier
Ý Identical technical specifications as the M80
Ý Housed in a single rack space steel chassis with a thick, high-quality, blue anodized front panel
Dynamic Range: >120dB
Noise Floor @ bus: 90.2dBu
Noise Floor @ Main Output: -96.4dBu
Noise Floor @ Channel Output: +24dB gain -88.2dBu
Headroom: +24dBu
Frequency Response: +/- 0.5dB 10Hz 60kHz
Crosstalk: <82dBu @ 10kHz
Channel Gain: +12dB to +40dB
THD + Noise: 0.00-1
THD + Noise Max I DSS: 0.5%
Input Impedance: 1.3k Ohms
Output Impedance: 51 Ohms
Master Output Control (BUS): -72dB to +1 OdB
Metering: Full Scale
Send Output Impedance: 51 Ohms
Return Impedance: 10k Ohms
Internal Operation Level: 0dBu =0dB
Input Connectors: XLR
Output Connectors: XLR
Send Connectors: 1/4 Tip Ring Sleeve
Return Connectors: 1/4 Tip Ring Sleeve
Power Supply: Internal Toroidial, Linear Supply
Power Requirements: 100VAC to 120VAC or 200VAC to 240VAC
Main Connection: EIC receptacle
Dimensions: (1) 1U rack, 18 x 1.75 x 7 in.
Weight: 12 lbs.
This low impedance stereo mix bus can be used for full control over stereo imaging. It has a fully loaded back panel, featuring XLR balanced input/output connectors as well as separate send and return jacks for inserting dynamics processors (such as The PreSonus ACP-22). On the front panel a 1/4 in., high Z input is for instrument preamplification. The mix output connectors are XLR balanced providing connectivity for professional recording systems.
Features
Ý Class-A discrete, Dual Servo microphone preamplifier
Ý 20 dB pad
Ý 48 V phantom
Ý 80 Hz roll-off filter
Ý Polarity reverse
Ý IDSS control creates vintage warmth by adjusting even harmonic distortion
Ý 12-segment level meter
Ý High output headphone amplifier
Ý Identical technical specifications as the M80
Ý Housed in a single rack space steel chassis with a thick, high-quality, blue anodized front panel
Technical Info
Number of Channels: 2Dynamic Range: >120dB
Noise Floor @ bus: 90.2dBu
Noise Floor @ Main Output: -96.4dBu
Noise Floor @ Channel Output: +24dB gain -88.2dBu
Headroom: +24dBu
Frequency Response: +/- 0.5dB 10Hz 60kHz
Crosstalk: <82dBu @ 10kHz
Channel Gain: +12dB to +40dB
THD + Noise: 0.00-1
THD + Noise Max I DSS: 0.5%
Input Impedance: 1.3k Ohms
Output Impedance: 51 Ohms
Master Output Control (BUS): -72dB to +1 OdB
Metering: Full Scale
Send Output Impedance: 51 Ohms
Return Impedance: 10k Ohms
Internal Operation Level: 0dBu =0dB
Input Connectors: XLR
Output Connectors: XLR
Send Connectors: 1/4 Tip Ring Sleeve
Return Connectors: 1/4 Tip Ring Sleeve
Power Supply: Internal Toroidial, Linear Supply
Power Requirements: 100VAC to 120VAC or 200VAC to 240VAC
Main Connection: EIC receptacle
Dimensions: (1) 1U rack, 18 x 1.75 x 7 in.
Weight: 12 lbs.
What Our Customers Say About zZounds
"Wonderful shopping experience!" - customer on November 15, 2009
PreSonus MP20 2-Channel Class A Preamp Reviews
9 out of 10
PreSonus MP20 PreAmp Customer Review
Feature:
Most of the extras are a bit unnecessary, though functional enough.
Quality:
The quality, durability, and level of components used in this unit is just unparalleled in this price range.
Value:
I've seen these units sold for around $500 before, which is impressive considering it's doubled in value!
Sound:
I rate the sound an eight, however if you take the VERY low cost into consideration I give it a 10. If you are purchasing this unit, it's obviously going to be used. $200 to $250 is a good deal! Best money you can possibly spend. However, you're not done yet - try to check inside to see if it includes the original Jensen transformers. If not, you can retrofit them for around $25 each. Then you will want to modify the existing opamps by simply swapping them out of the solderless saddles Presonus used (bless them!). There are sites dedicated to this very issue out there, so just search: Presonus MP20 upgrades. When all is said and done you'll be very thankful, and impressed with this unit!
Ease of Use:
Simple.
Support:
I wouldn't know.
Most of the extras are a bit unnecessary, though functional enough.
Quality:
The quality, durability, and level of components used in this unit is just unparalleled in this price range.
Value:
I've seen these units sold for around $500 before, which is impressive considering it's doubled in value!
Sound:
I rate the sound an eight, however if you take the VERY low cost into consideration I give it a 10. If you are purchasing this unit, it's obviously going to be used. $200 to $250 is a good deal! Best money you can possibly spend. However, you're not done yet - try to check inside to see if it includes the original Jensen transformers. If not, you can retrofit them for around $25 each. Then you will want to modify the existing opamps by simply swapping them out of the solderless saddles Presonus used (bless them!). There are sites dedicated to this very issue out there, so just search: Presonus MP20 upgrades. When all is said and done you'll be very thankful, and impressed with this unit!
Ease of Use:
Simple.
Support:
I wouldn't know.
Submitted: 08/15/2009
10 out of 10
"The best buy you'll make for your studio."
Feature:
Each channel on this unit has two knobs: Gain and what seems to be a fine-tuning Gain knob. If you know what you're doing this is all you need. The usual +48v is included on each channel, and a very useful phase switch as well. It's really all you need.
Quality:
It hasn't lost any knobs yet, but where I have it isn't exactly a test of it's durability. As far as finishing and appearance goes, this preamp is beautiful and has the appropriate ammount of blinking LEDs to keep most engineers busy.
Value:
Want some clarity where it matters in your mix? You can't go wrong buying this, worth every penny.
Desirability:
This thing's shiny, it blinks a lot, and it sounds GREAT! If I didn't have access to it already, I'd want it more than anything else I could want for my studio.
Sound:
I use this preamp with AKG414's used as overhead mics on drum kits, as well as Shure SM81's for acoustic guitars. I ALWAYS hear more out of the mics I plug into this than with any other preamp I have at my disposal. This is a great preamp for condenser mics, it really delivers. As far as louder signals from dynamic mics (ie twin bass drums for a metal band) this unit seems to be a little bit too sensitive without heavy compression. That shouldn't take away from how well it delivers, it just focuses in on what this unit is good at: Sensitive pickup and accurate detail to audio reproduction.
Ease of Use:
If you can't get a decent signal out of this thing, you'd better cut your losses and apply to work at your local fast food eatery ASAP.
Support:
Haven't needed them, that's support enough for me.
Each channel on this unit has two knobs: Gain and what seems to be a fine-tuning Gain knob. If you know what you're doing this is all you need. The usual +48v is included on each channel, and a very useful phase switch as well. It's really all you need.
Quality:
It hasn't lost any knobs yet, but where I have it isn't exactly a test of it's durability. As far as finishing and appearance goes, this preamp is beautiful and has the appropriate ammount of blinking LEDs to keep most engineers busy.
Value:
Want some clarity where it matters in your mix? You can't go wrong buying this, worth every penny.
Desirability:
This thing's shiny, it blinks a lot, and it sounds GREAT! If I didn't have access to it already, I'd want it more than anything else I could want for my studio.
Sound:
I use this preamp with AKG414's used as overhead mics on drum kits, as well as Shure SM81's for acoustic guitars. I ALWAYS hear more out of the mics I plug into this than with any other preamp I have at my disposal. This is a great preamp for condenser mics, it really delivers. As far as louder signals from dynamic mics (ie twin bass drums for a metal band) this unit seems to be a little bit too sensitive without heavy compression. That shouldn't take away from how well it delivers, it just focuses in on what this unit is good at: Sensitive pickup and accurate detail to audio reproduction.
Ease of Use:
If you can't get a decent signal out of this thing, you'd better cut your losses and apply to work at your local fast food eatery ASAP.
Support:
Haven't needed them, that's support enough for me.
Submitted: 10/26/2006
Style of Music: All, Jazz, Metal, Classical
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