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PreSonus BLUETUBE DP Stereo Dual Path Microphone/Instrument Preamp with 12AX7 Tube   (Open Box)
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Product# 184132
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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.

  • 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

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

  • Input
    Connector Type: Neutrik combo
    XLR Impedance: 1.3K Ohms
    Hi-Z, 1/4": 1 Meg Ohms

    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

    Analog VU: -2odBu to +6dBu
    Clip Indicator: +22dBu

    THD Noise (unweighted) solid state: < 0.005%
    THD Noise (unweighted) tube stage: 0.01% to 30%
    Signal To Noise: >95dB
    Power Supply Rejection: >98dB

    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

Review Snapshot

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

(based on 1 review)

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Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Solid preamp with good features


from Austin, Tx

Site Member

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

This preamp is great. Anyone looking for a big sound for small bucks can stop looking. The preamp has several built in features, like polar inversion, hum reduction, and phantom power (all on each of the two channels), but the best part about it is the tube vs. solid state mix. You can mix where your amp source comes from, so you can get that warmth you want with out sacrificing quality, volume, or becoming distorted. There is plenty of power in this, and paired with a great mic, its definitely top notch. My only complaints would probably have to be the fact that there is no on or off button, you have to turn off the tube and pull out the plug in order to stop it from working. Also it requires additional hardware to be put in a rack. That's not a big deal for me, but if I had a rack I wouldn't want to shell out the extra cash just to be able to put it in there.

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