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Product 184132

PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube

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The PreSonus BlueTube DP Stereo Preamp is among the most versatile two-channel mic and instrument preamps in its class. Its Dual Path technology lets...Click To Read More About This Product

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OVERVIEW

Tube or solid state? It's got both!

The PreSonus BlueTube DP Stereo Preamp is among the most versatile two-channel mic and instrument preamps in its class. Its Dual Path technology lets you choose between two preamp stages: a transparent solid-state or warm tube preamp. Each gain stage of the BlueTube DP is pure Class A with high headroom.

Each channel of the BlueTube DP includes a -20dB pad, polarity reverse, 80Hz filter, and +48v phantom power. On the front panel you'll find controls for solid state gain and switchable on/off tube drive. When the tube drive is off, the tube preamplifier stage is bypassed delivering ultra-quiet and transparent solid state preamplification.

Large analog VU meters provide precise visual monitoring. Dual Neutrik combo jacks for microphones or instruments provides quality I/O and make the BlueTube DP great as a DI for electric bass and guitar.

FEATURES
  • Stereo microphone/instrument preamp
  • Dual Class A gain stages
  • Tube drive from 12AX7 tube
  • Neutrik XLR and 1/4" High-Z combo input connectors
  • Neutrik balanced XLR/TS 1/4" outputs
  • 20dB pad, polarity reversal, and 80Hz filter on each channel
  • 2 illuminated analog VU meters
SPECIFICATIONS
Input
  • Connector Type: Neutrik combo
  • XLR Impedance: 1.3K Ohms
  • Hi-Z, 1/4": 1 Meg Ohms
Output
  • Connector Type: XLR and 1/4" TS
  • Impedance: 51 Ohms
Panel Controls
  • Gain: 0dB to +54dB
  • Tube Drive: 0% to 100%
  • Phase Reversal
  • -20dB Pad
  • Phantom Power
Meters
  • Analog VU: -2odBu to +6dBu
  • Clip Indicator: +22dBu
Performance
  • THD Noise (unweighted) solid state: < 0.005%
    THD Noise (unweighted) tube stage: 0.01% to 30%
  • Signal To Noise: >95dB
  • Power Supply Rejection: >98dB
Physical
  • Weight: 4 lbs.
  • Dimensions: 8"W x 1.75"H x 5"D
  • Mounting: Universal rack tray insert
Power Supply
  • Type: Linear
  • Input: 16VAC / 1000mA
  • Power: 16 Watts
  • Transformer: External
Reviews
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Review Snapshot

by PowerReviews
PreSonusBLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube
 
4.3

(based on 25 reviews)

Ratings Distribution

  • 5 Stars

     

    (19)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (2)

67%

of respondents would recommend this to a friend.

Pros

  • Easy to use (3)

Cons

No Cons

Best Uses

No Best Uses

Most Liked Positive Review

 

Good deal

This is a great deal for the money. Preamps are usually put in the 'you get what you pay for' category but I think this unit is exceptional. Run a decent mic through...Read complete review

This is a great deal for the money. Preamps are usually put in the 'you get what you pay for' category but I think this unit is exceptional. Run a decent mic through this and maybe a vocal enhancer and you couldn't ask for better vocals given the money spent. I use a Shure SM7B and an Antares AVP-1 vocal producer with this unit and absolutely love the results. It's the perfect thing to add that warmth I'm looking for in my vocals.And in response to all those comments regarding the lack of a power switch, some of the best rack-mounted equipment are designed to be left on. But if you are all so worried about it, instead of sabotaging the products overall review, why don't you use your brains and go to the nearest office supply store and buy a power strip with a switch on it??? That way you can plug multiple devices in and turn them all on and off with ONE simple switch. Thinking is fun!

VS

Most Liked Negative Review

 

If by warmth you mean muddy this is for you.

First of all, the "tube" that has the red diode under it to make you dumb enough to believe the tube is on is just plain deception. 2nd, it couldn't be...Read complete review

First of all, the "tube" that has the red diode under it to make you dumb enough to believe the tube is on is just plain deception. 2nd, it couldn't be true stereo preamp if both channels went through one tube. 3rd this thing will muddy up your sound really well. It is o.k. for taking the edge off of say an acoustic guitar, say for live performance purposes. It gives an o.k. effect to bass guitar...if you want that muddy overdrive sound. I paid half the current price for this and wouldn't pay a dime more. Oh yeah and the light in one of the VU meters went out about 4 months after I had it. (might've been able to prolong it's life if it had an on/off switch) This is a rip off for this "preamp".

Reviewed by 25 customers

Displaying reviews 1-20

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(10 of 10 customers found this review helpful)

 
5.0

Good deal

By Fretfreak83

from USA

Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

This is a great deal for the money. Preamps are usually put in the 'you get what you pay for' category but I think this unit is exceptional. Run a decent mic through this and maybe a vocal enhancer and you couldn't ask for better vocals given the money spent. I use a Shure SM7B and an Antares AVP-1 vocal producer with this unit and absolutely love the results. It's the perfect thing to add that warmth I'm looking for in my vocals.And in response to all those comments regarding the lack of a power switch, some of the best rack-mounted equipment are designed to be left on. But if you are all so worried about it, instead of sabotaging the products overall review, why don't you use your brains and go to the nearest office supply store and buy a power strip with a switch on it??? That way you can plug multiple devices in and turn them all on and off with ONE simple switch. Thinking is fun!

(5 of 12 customers found this review helpful)

 
2.0

DO YOU REALLY NEED IT

By WICKTANA

from HIXSON, TN

About Me Professional Musician

See all my reviews

Ask me a question

Pros

  • Easy To Use

Cons

  • Limited Functions

Best Uses

  • UNSURE

Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

While this may be of value to those who don't have a lot of recording equipment. Since I am blessed with a great deal of high dollar mics, vocalist effects, quality recording devise, at this point I've not found it to be of any help. For me it was a bad investment, but that doesn't mean the same goes for everyone. I'm still trying to hear any thing that sounds better when using it. If you don't have a distortion pedal it does add some crunch to a guitar. This review is based on my experience, and is not meant to contradict any other review.

(5 of 5 customers found this review helpful)

 
5.0

Tremendously Good Deal

By SpecGrav

from Spokane, WA

See all my reviews

Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

This is just the thing to add some warmth, whether it's to vocals, a direct or mic'd acoustic, or direct bass or guitar. I REALLY wish there was a power switch and that it had front access to the jacks, but it's a small price to pay for the warmth and clarity this gives you with no fuss. I've been recording for 15+ years, and I have to agree with the 'no better gear for the money' attitude in the other reviews.

(5 of 5 customers found this review helpful)

 
5.0

Really nice for the price...

By Nymphadora Hexx

from Phoenix and New York City.

See all my reviews

Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

I really like this and it does what it says it does. An on-off switch would be nice but they are quite easy to install. For those earlier posts wondering about stereo from only one tube... a 12AX7 tube has two "sides" in it, not only one.

(3 of 3 customers found this review helpful)

 
5.0

Substantial Improvement in Quality

By Craig W

from Kansas City, MO

About Me Experienced

See all my reviews

Ask me a question

Verified Buyer

Pros

  • Easy To Use
  • Huge Improvement
  • Recording Upgrade

Cons

    Best Uses

    • Home Studio
    • Performances
    • Professional Recording

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    The Blue Tube changed everything for me. What I formerly thought was a clean recording I now know as poor. I can hear detail I didn't know possible. I can hear the differences in my microphones and through trial can tell what applications they are best suited for. You don't know what you don't know, and I'm glad I followed advice on Tweakheadz website and bought my first real pre-amp. This new found clarity in mic-ed recording has led to discovery and improvement in all of my recording practices and techniques. If you are using pre-amps costing less than a Benjamin, then you haven't really heard your microphones yet.

    The tube feature is to be used cautiously at first until an understanding of its sensitivity is learned. Its effects can be heard just a few clicks in past "on". It can add significant transformation to tone, as well as gentle warmth at low levels.

    I had to pad some of my microphones for the first time, the Bluetube revealled their signal strength that was previously unknown to me. This thing adds the juice without adding noise. My ears and eyes have been opened, my enthusiasm for recording peaked, like the signals I now get.

    (3 of 7 customers found this review helpful)

     
    1.0

    2 DOA, no more

    By tgb

    from Los Angeles, CA

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    I ordered this product because the guitar players in the band said that they prefer "tube" sound. I got the first one, plugged it in and all I got was a nasty hum and the vu meters didn't show any input no matter what I plugged in (bass, guitar, SM-57, SM-58Beta). I thought I just got a bad one so I ordered a replacement. When I plugged in the replacement the #2 input vu meter was pegged with the gain at minimum (even after disconnecting the guitar) and none of the settings made a difference. I don't think 2 bad ones is a coincidence so I asked for a refund this time.I will stick with the Whirlwind IMP2 & Director direct boxes. I haven't had a problem with them in over 10 years of weekly use.

    (3 of 26 customers found this review helpful)

     
    1.0

    not good

    By shoerocker

    from KY

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    Just got this Presonus Bluetube DP yesterday. I began experimenting by putting it between my guitar and DAW to try to add a bit of warmth to the amp modeling software. The VU meter went into the red when I strummed a chord assertively with the gain on the Bluetube at zero. The 20db pad did nothing. The tube drive knob did nothing. Both channels were equally defective. I'll be returning it at once.

    (3 of 4 customers found this review helpful)

     
    5.0

    Doesn't work? Don't write a review

    By Sonny D

    from Chicago

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    Until you have used this product it is rediculous to write a review. All brands have defective products no company is immune to this. I have a working ubnit, however the first one I received had a defective channel. Rather than act like a child who got a broken toy on Christams I returned it and got a working one. You absolutely can not get a better tube pre for this price. It gives my vocals a warmth and depth I have only heard when in the studio, I record my vocals at home in the bathroom. When I plug my guitar in it even makes my practice amo sound great running direct in. It's easy to use and use it I do, it has not been disconnected frrom my BR 1200-CD since I hooked it up. Great Buy!!!

    (2 of 2 customers found this review helpful)

     
    4.0

    Downfalls

    By Old School Rockin Fool

    from Flint, MI

    See all my reviews

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    OK, this preamp has wonderful tonal qualities, so buy it for that reason. However, it has some real issues from a design standpoint. ONE - No ON/OFF switch, so to turn it on you have to plug in the power adapter, and to turn it off, unplug it. How much would it have cost to design in a switch? Like $1.00 at most. TWO - The power supply is 16VDC, not the way more common 9VDC, but, the plug is the same as most 9VDC power-packs, so you'll inadvertently plug a 9VDC adapter into this and nothing will happen, and/or you'll plug this 16VDC unit into your 9VDC gizmo and toast it. THREE - OK, somewhere I read that you can change the tube in this by just removing the cover. Well, sorta true, but the cover has the six jacks attached to it and you have to remove the screws and nuts to them first, plus, the cover has two studs on it that run up threw a keyhole in the circuit board that you have to mess around with to get to release. But you can change out the tube. Not sure if you would ever have to though, unless you are a tube freak and know one 12AX7's tonal qualities from another. And one last thing, the red "glow" you see, that's not the tube. They put a red diode under the tube on the circuit board to make you think the tube was "working". Remember the whopping 16VDC power pack it uses? Well that's NOT gonna make any tube glow. But, the tone it produces is good, so buy it.

    (2 of 3 customers found this review helpful)

     
    3.0

    Review

    By jollygoga

    from Kutaisi Georgia

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    I have purchased one of the Bluetube and I think it was the great mistake - only one 12AX7 tube on two direct channel gives the noise on 50-60Hz. If you need recording distored sound without drive pedal - I think this item for you.

    (2 of 2 customers found this review helpful)

     
    5.0

    Bluetube + Firepod

    By Presonus_Fan

    from Virginia

    Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

    I've been recording with this bad boy for a little under a year now, and couldn't be happier with it. I run my guitar through it, and then through a pedal, and then into Logic Studio for some EQ and tweaking and the sound I get is AWESOME! Turn the the tube all the way up and just barely add enough solid state to make it audible and you're set!As far as vocals go, I avoid the tube for them, using only solid state, and it adds the warmth that everyone seems to be looking for. Overall, great product for the price. Piece of advice: let it run for a few days to burn the tubes in before trying to record anything through the tube.

    (1 of 3 customers found this review helpful)

     
    5.0

    Great unit

    By musictopraiseGod

    from Downers Grove, IL

    About Me Experienced

    Verified Buyer

    Pros

    • Clear Sound
    • Easy To Use
    • Powerful
    • Professional Functions
    • Versatile

    Cons

      Best Uses

      • Performances

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      A good device and my church's music connoisseurs even took notice of the "rounded" and "thick" tones from my Gibson ES339 coming through the church's antiquated sound system.

      Highly recommended for any guitar player.

      (1 of 2 customers found this review helpful)

       
      2.0

      If by warmth you mean muddy this is for you.

      By flipjack

      from seattle

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      First of all, the "tube" that has the red diode under it to make you dumb enough to believe the tube is on is just plain deception. 2nd, it couldn't be true stereo preamp if both channels went through one tube. 3rd this thing will muddy up your sound really well. It is o.k. for taking the edge off of say an acoustic guitar, say for live performance purposes. It gives an o.k. effect to bass guitar...if you want that muddy overdrive sound. I paid half the current price for this and wouldn't pay a dime more. Oh yeah and the light in one of the VU meters went out about 4 months after I had it. (might've been able to prolong it's life if it had an on/off switch) This is a rip off for this "preamp".

      (1 of 1 customers found this review helpful)

       
      5.0

      Single Most Important Recording Tool

      By redchurch

      from Garland, TX

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      You will never get as clean or hot recording as you will with a dedicated preamp. That's where the PreSonus BlueTube DP Stereo comes in. Produces delicious recordings. Sleek, compact, and relatively inexpensive. If your project studio is lacking a decent preamp, get one of these TODAY!

      (1 of 1 customers found this review helpful)

       
      5.0

      Bluetube DP Mic Pre

      By LapSlide

      from Illinois

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      I've been using this pre-amp for a couple months now, and I'm really pretty impressed with the Bluetube. Overall, it's small, easy to use, affordable, and, above all, quiet. It will give a fair amount of gain before you get noticeable ambient noise. The face is easy to use: two identical channels, with dials for gain and tube drive, and four buttons: +48v phantom power for condensers, a pad button for loud sources, an 80 Hz "rumble" (high-pass) filter, and a phase-inverter. The back end has two identical channels, with combo 1/4"/XLR inputs and separate 1/4" and XLR outputs. The combo connectors are nice as they keep the unit small and compact, about the size of a hardcover book. The unit interfaces seamlessly, and has high-quality metal construction. The tube setting will give a decent amount of "warmth" to your sound, and, at higher settings, can make it "growl" nicely. The tube is also ventilated well, but does of course take a bit of time to warm up. Overall, it is a small, quiet, good sounding pre with two independent channels and a fair amount of features for a low price. Perfect for soloists on a budget.

      (1 of 1 customers found this review helpful)

       
      5.0

      Good performance

      By Sorentoman

      from Marietta, GA

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      Economical unit performing to that of more expensive units. Use it between my mics and mixer with both condenser and non-condenser microphones with great results. Also has a rack mount option for use with two units.

       
      5.0

      Just Fine

      By SadFaceMic

      from Savannah, GA

      See all my reviews

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      I use this as a preamp for home recording. I send vocals, guts, bass, and the drum machine through it before they hit the interface. It gives me so much freedom with my sound. I wish it had an onboard EQ, but I shoulda spent more money, eh? What sold me on it was the tube. This things just adds some much warmth and depth to whatever you run through it, esp a drum machine. It even provides phantom power! You can't beat this thing with a stick!

       
      5.0

      great preamp

      By Mr. Michael-ukB.v

      from Boston, MA

      See all my reviews

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      I purchased this preamp along with a pair of rode nt-5's a few months ago. This combination works great for my acoustic guitar recordings. I like to use just a little bit of tube warmth (the tube drive turned to about 9 o'clock) to warm up the sound of the mics, while still retaining the natural sound and nuances of the acoustic guitar. I have not had any bad experience with this preamp, and aesthetically, it looks amazing. I don't know what else to really say about it: the only thing a preamp is made to do is bring out the best sound of your mics, and this has been exactly what it has done for me (at least for acoustic guitar - I have not tried it with vocals, but I'm sure it would be just as good).

       
      5.0

      Some people are confused

      By Rats11444

      from New York City, NY

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      This thing is a great tube pre amp for recording or live applications. Some people reviewing it I think are not quite sure how to use it. Is it the best pre amp out there? For an affordable price, yes. You simply cannot beat it. If you have no budget there are better out there. But once you get better than this device you get into the 500 dollar + range. Which a lot of people aren't wanting to pay for their home studio.This product really makes your vocals sound warm as well as the acoustic guitar. Also if you own a guitar port you can plug into this with your guitar and then into the guitarport. That allows the amp models on there to sound a lot better having the tube pre amp in front of it.But I mostly use it into an m-audio fast track pro. If this product tore up I would buy it again the same day. I do wish it had an on/off switch but that's not going to cause me to not have something that has this kind of sound because of a switch. Also it makes no difference to me what kinda adapter it plugs up with. That doesn't affect me in the least.

       
      5.0

      Great Gain Solution

      By EchoRadius

      from alexandria, SD

      Comments about PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube:

      I bought this thing about a year ago, hoping that it would give our vocals the gain that I needed, without the feedback-inducing noise. I wasn't sure how well it was working the whole time till the other night when the tube went out. Thus we had to rely strictly on the gain on our mixer. HUGE difference. I can honestly say now that, vocally, our entire karaoke set-up was dependent on this one device. It makes a great fix for those trying to get some gain out of your dynamic mic's without all the feedback. I wouldn't say it'll fix all your problems... but it sure is one heck of a start.

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