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PreSonus TubePre v2 - Tube Preamplifier/DI Box

BH #PRTUBEPREV2 • MFR #TUBEPRE V2
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PreSonus TubePre v2 - Tube Preamplifier/DI Box
Key Features
  • Single Channel
  • Preamp and DI
  • Solid State Preamp
  • 12AX7 Vacuum Tube Stage
The TubePre V2 from PreSonus is a fully professional tube preamp with a dual-servo (no capacitors) gain stage that allows for boosting the program signal to high levels without significantly increasing the background noise. Discrete components and high-voltage operation provide wide dynamic range without sacrificing detail. The preamp also serves as a direct box (DI) for guitars and basses and it's small enough to carry almost anywhere.
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PreSonus TubePre V2 Overview

The TubePre V2 from PreSonus is a fully professional tube preamp with a dual-servo (no capacitors) gain stage that allows for boosting the program signal to high levels without significantly increasing the background noise. Discrete components and high-voltage operation provide wide dynamic range without sacrificing detail. The preamp also serves as a direct box (DI) for guitars and basses and it's small enough to carry almost anywhere.

Housed in a rugged case, the unit features an XMAX Class A solid-state preamp followed in the signal path by a 12AX7 vacuum tube output stage. Also included are high-pass filter, phantom power for condenser microphones, a phase reverse switch, and a backlit VU meter. The rear panel contains an unbalanced 1/4" instrument and a balanced XLR microphone input, along with unbalanced 1/4" and balanced XLR line outputs.

Mono, tube-based microphone preamp with DI functionality
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
Phase reverse switch
Backlit VU meter
Clip LED
Powered via an external (included) 12VDC, 1A power supply
UPC: 673454001659

PreSonus TubePre V2 Specs

Number of Channels
Single
Inputs
1 x XLR Microphone
1 x 1/4" TS phone Instrument
Input Impedance
Microphone
1.3kΩ
Instrument
1MΩ
Gain Range
Microphone
-15dB to +65dB
Instrument
-30dB to +50dB
Output
1 x XLR
1 x 1/4" TS phone
Output Impedance
51Ω
Maximum Output Level
+20dBu
Phantom Power
48V switchable
Multi Function
No
Frequency Response
Microphone
20Hz to 20kHz, -0.3dB (+4dBu, unity gain)
5Hz to 120kHz, -3.0dB (+4dBu, unity gain)
Noise
Microphone EIN
-131dB, 20kHz BW, maximum gain, Rs=40Ω, A-weighted
-128dB, 20kHz BW, maximum gain, Rs=40Ω, unweighted
THD + N
Microphone
0.01%, -10dBu, 1kHz, unity gain, 20kHz BW, unweighted
Dynamic Range
Microphone
115dB, 1kHz, unity gain, 20kHz BW, A-weighted
107dB, 1kHz, unity gain, 20kHz BW, unweighted
Power Requirements
+12VDC, 1000mA, center pin positive, via included external power supply
PSU Barrel Dimensions: 5.5mm outer dimension x 2.1mm inner dimension x 9.5mm length
Dimensions
1/3U rack-mount chassis
Weight
Not specified by manufacturer
Packaging Info
Package Weight
3.3 lb
Box Dimensions (LxWxH)
12.5 x 7.7 x 4.3"

PreSonus TubePre V2 Reviews

Irish Luck? Or Irish Drunk?

By Mark
Rated 4 out of 5
Date: 2018-11-11

I read that lone 1-star review from Irish Luck and laughed - Funniest review Ive read in a long time. The reality is that almost all new preamp tubes today come from China or Russia. The great tubes from USA and Western Europe stopped being produced back in the 70s and 80s. Any socketed tube can come loose due to vibration. Did Irish Crank even try reseating the tube? In any case ... The Presonus TubePre v2 consistently gets high marks in unsolicited consumers. Its a good Value based on design, features, and performance for its Price Point! Some of the very best tube preamps cost over $1000. At $130 the TubePre v2 is a bargain. The phantom power and 80 High Pass filter are handy for some Mic to phone applications, and a true analog VU meter instead of LEDs for signal Level indication is a welcome old-school design touch. For modders: you can easily change out the tube for a Vintage NOS 12AX7A, 7025, or ECC83 for around $20 to $60.

I would buy this product again

By Rush_Fan_1
Rated 5 out of 5
Date: 2014-12-16

I absolutely love this preamp. I bought it and tried it and it sounds pretty good right out of the box, but I upgraded the tube to an American made RCA 12AX7 and it sounds absolutely terrific on my bass and on vocals as well. Haven't had a chance to try on anything else but I have no reason to believe I wouldn't get the same results on other sources as well. Its very well made as it has a nice metal enclosure and not a cheap plastic one.

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