PreSonus TubePre V2 - 1-Channel 12AX7 Dual-Servo Vacuum-Tube Preamplifier/DI Box in Blue Finish

The PreSonus TubePre V2 is a professional, one-channel tube preamplifier that brings an unmatched level of versatility, warmth, and clarity to your audio signals. Compact, durable, and designed for serious gigging, it is an ideal tool for musicians, engineers, and producers who need a high-quality preamp on a variety of sources, including guitars, basses, and microphones. With its combination of solid-state and vacuum tube technologies, the TubePre V2 delivers a wide range of tonal possibilities, making it a valuable addition to any setup.

At the heart of the TubePre V2 is PreSonus' renowned XMAX Class A solid-state preamp stage, which provides a clean, transparent boost to your signals. Following this, a 12AX7 vacuum-tube stage - hand-selected and rigorously tested for optimal performance - adds warmth and character to the sound. The Drive control lets you dial in tube distortion, from light warmth to full-on, crunchy saturation, perfect for guitars and basses. This gives you complete control over the tonal quality, allowing for everything from smooth, vintage warmth to aggressive, overdriven tones.

For enhanced signal clarity and detail, the TubePre V2 incorporates a dual-servo gain stage, which ensures a high dynamic range while minimizing noise, even at high gain levels. This discrete, high-voltage operation offers pristine audio reproduction that's often difficult to achieve in other preamps within this class. Whether you're tracking vocals, electric guitars, or bass, the TubePre V2 ensures that your sound remains rich, detailed, and free from unwanted distortion or noise.

The TubePre V2 comes equipped with several practical features, including a 48V phantom power switch for condenser microphones, an 80 Hz high-pass filter to eliminate low-frequency rumble, and a polarity-reverse switch to correct phase issues. A backlit VU meter and clip LED are included for precise monitoring of signal levels, ensuring optimal performance. The VU meter is a visual aid that shows input level, while the clip LED alerts you when the signal is too hot, allowing you to prevent distortion before it happens.

On the rear panel, the TubePre V2 offers both balanced XLR and unbalanced 1/4-inch inputs, giving you the flexibility to connect either a microphone or an instrument. An instrument input select switch lets you toggle between the two, making it easy to switch between different sources. The line output options include both a balanced XLR and an unbalanced 1/4-inch jack, providing versatility for connection to other gear, whether you're sending the signal to a recording interface or a PA system. The output impedance is optimized at 51Ω, ensuring compatibility with a wide range of audio equipment.

The TubePre V2's compact 1/3U rack-mountable chassis makes it incredibly portable and easy to integrate into your setup, whether you're on stage or in the studio. It's rugged enough to withstand the demands of live performances, yet small enough to fit into your gig bag. An external 12 VDC, 1A power supply is included, ensuring reliable operation even in remote or mobile environments.

Perfect for studio and live applications alike, the PreSonus TubePre V2 delivers the right balance of performance and portability. Whether you're using it as a direct box for guitars and basses, or as a preamp for vocals and other instruments, the TubePre V2 adds warmth, clarity, and character to your sound, making it a must-have for any serious audio professional.

Features

• XMAX Class A solid-state preamp input stage with Input Gain control
• 12AX7 dual-servo vacuum-tube output stage for dynamic, detailed sound
• Gain control range of +10 dB to +54 dB for transparent or saturated tube distortion
• 48V phantom power for condenser microphones
• 80 Hz high-pass filter to eliminate unwanted low-end rumble
• Polarity-reverse switch to resolve phase issues
• Backlit VU meter and clip LED for precise level monitoring
• Balanced XLR and unbalanced 1/4-inch instrument and line inputs
• Balanced XLR and unbalanced 1/4-inch line outputs for flexible connectivity
• Dynamic range of 115 dB for rich, clear sound reproduction
• Discrete, high-voltage operation for superior sound quality
• Compact, rugged 1/3U rack-mountable chassis for portability and durability
• External 12 VDC, 1A power supply for reliable operation
• Dimensions: 19 x 1.75 x 5.5 inches, Weight: 5 lbs

Specifications

Inputs

• Microphone 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, 1 kHz, unity gain, 20 kHz BW, unwtd
  • Input Impedance: 1.3 kΩ
  • Phantom Power: +48 VDC, 10 mA
• Instrument Input
  • Connector Type: 1/4-inch TS, female, unbalanced
  • Input Impedance: 1 MΩ

Output

• Analog Output
  • Connector Types: XLR, male, balanced; 1/4-inch TS, female, unbalanced
  • Maximum Output: +20 dBu
  • Output Impedance: 51Ω
• Tube Stage
  • Type: 12AX7

Power

• Type: +12 VDC, 1000 mA, center pin positive
• PSU Barrel Dimensions: 5.5 mm O.D., 2.1 mm I.D., 9.5 mm length