PreSonus TubePre V2 – PreAmplifier


Global Warming for Mics and Instruments

1-channel Tube Preamplifier/DI Box

  • 1 Balanced ¼” Inputs
  • 1 Balanced ¼” Output
  • Backlit VU Meter
  • XMAX Pre Amps
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A versatile preamp with impressive dynamic range and detail.

Compact and affordable, the ever-popular TubePre V2 professional tube preamplifier employs our popular XMAX Class A solid-state preamp, followed in the signal path by a 12AX7 vacuum-tube stage. A dual-servo (no capacitors) gain stage lets you boost the signal to smoking hot levels without significantly increasing noise. Discrete components and high-voltage operation offer dynamic range and detail not found in other single-channel tube preamps in its class. Built tough enough for serious gigging, the TubePre V2 is a great choice for guitars and microphones alike.

From gentle warmth to total fuzz with the twist of a knob.

XMAX microphone preamps deliver incredibly high headroom, deep lows, smooth highs, and a rich overall sound garnering them rave reviews from users and the media alike. The 12AX7 vacuum tube that follows the XMAX in the TubePre V2 was hand-selected and carefully tested for electrical conformity and freedom from microphonics. Twist the Drive saturation control to add the “color” that only a hand-selected 12AX7 can deliver — from gentle warmth to total fuzz.

A versatile tool that’s built to travel.

Housed in a rugged case that is built to travel, the TubePre V2 rear panel sports separate unbalanced, ¼” instrument and balanced, XLR mic inputs and unbalanced ¼” and balanced XLR line outputs. Use it as a straight-up tube preamp or a dynamite direct box (DI) for guitars and basses. We’ve provided all of the extras you need, including a highpass filter, phantom power, polarity reverse, and a backlit VU meter. Yet with all its features, it’s small enough to carry almost anywhere—or simply screw-mount it to a standard rack tray.

Great sound, live or in the studio.

Live or in the studio, the TubePre V2 is a great-sounding tool you’ll use on a variety of sources. Add just the right amount of tube distortion to guitars, basses, and mic signals. Go lightly for gentle warmth or go all-out for solid crunch—it’s up to you. So give your ears a treat and test the TubePreV2 at your favorite PreSonus® dealer. Then check out the price— and prepare to be amazed. Because with PreSonus, big sound does not have to cost big money.


    XMAX Class A preamp input stage
    12AX7 dual-servo vacuum tube output stage
    Input Gain control
    48V phantom power
    80 Hz high-pass filter
    -20 dB pad
    Instrument input select
    Polarity-reverse switch
    Backlit VU meter
    Clip LED


    1 unbalanced ¼” instrument input
    1 balanced XLR mic input
    1 unbalanced ¼” line output
    1 balanced XLR line output


    Compact 1/3U rack-mount chassis
    External 12 VDC, 1A power supply

Technical Specifications
Mic Input
Connector Type     XLR, female, balanced
EIN     -131 dB, 20 kHz BW, max gain, Rs=40Ω, A-wtd -128 dB, 20 kHz BW, max gain, Rs=40Ω, unwtd
Frequency Response     20 Hz – 20 kHz, -0.3 dB, +4 dBu, unity gain 5 Hz – 120 kHz, -3 dB, +4 dBu, unity gain
THD+N     0.01%, -10 dBu, 1 kHz, unity gain, 20 kHz BW, unwtd
Dynamic Range     115 dB, 1 kHz, unity gain, 20 kHz BW, A-wtd 107 dB, 1kHz, unity gain, 20 kHz BW, unwtd
Input Impedance     1.3 kΩ
Phantom Power     +48 VDC, 10 mA

Instrument Input
Connector Type     ¼” TS, female, unbalanced
Input Impedance     1 MΩ

Analog Output
Connector Types     XLR, male, balanced ¼” TS, female, unbalanced
Maximum Output     +20 dBu
Output Impedance     51Ω

Tube Stage
Type     12AX7

External Power Adapter     +12 VDC, 1A, center-pin positive
PSU Barrel Dimensions     5.5 mm O.D., 2.1 mm I.D., 9.5 mm length

Dimensions     1/3U rack-mountable (screw-mount to standard rack tray, not included)
Height     1.75” (44.45 mm)
Depth     5.5” (139.7 mm)
Width     5.5” (139.7 mm)
Weight     5 lb. (2.27 kg)