PreSonus TubePre V2 Single-Channel Tube Preamp and DI Box

Like PreSonus' original TubePre, the v2 is a fully professional tube preamp, with a dual-servo (no capacitors) gain stage that lets you boost the program signal without significantly increasing the background noise. Discrete components and high-voltage operation offer dynamic range and detail not found in other single-channel tube preamps in its class.

But the TubePre V2 provides an even wider palette of sound options, and a much more focused tube saturation, than the original TubePre. It has been upgraded to employ PreSonus' popular XMAX Class A solid-state preamp, which is followed in the signal path by a 12AX7 vacuum-tube stage. Twist the TubePre V2 Drive saturation control to add the "color" that only a hand-selected 12AX7 vacuum tube can deliver — from gentle warmth to total fuzz.

Housed in a rugged case, the TubePre V2 rear panel sports separate unbalanced, 1/4" instrument and balanced, XLR mic inputs and unbalanced 1/4" and balanced XLR line outputs. PreSonus has included all of the extras you need for professional operation including a high-pass filter, phantom power for condenser mics, polarity reverse switch and a backlit VU meter.

The TubePre V2 is more than a mic preamp. Thanks to its separate instrument and mic inputs, it also serves as a direct box (DI) for guitars and basses. And it's small enough to carry almost anywhere, although it can also be screw-mounted it to a standard rack tray.

PreSonus TubePre v2 Features:

• 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
• Input/Output
  • 1 unbalanced 1/4" instrument input
  • 1 balanced XLR mic input
  • 1 unbalanced 1/4" line output
  • 1 balanced XLR line output
• Compact 1/3 RU rack-mount chassis
• External 12 VDC, 1A power supply

PreSonus TubePre v2 Specifications:

• Mic Input:
  • Connector Type: XLR, female, balanced
  • EIN: -131 dB, 20 kHz BW, max gain, Rs=40Ohm, A-wtd -128 dB, 20 kHzBW, max gain, Rs=40Ohm, 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 kOhm
  • Phantom Power: +48 VDC, 10 mA
• Instrument Input:
  • Connector Type: 1/4" TS, female, unbalanced
  • Input Impedance: 1 MOhm
• Analog Output:
  • Connector Types: XLR, male, balanced 1/4" TS, female, unbalanced
  • Maximum Output: +20 dBu
  • Output Impedance: 51Ohm
• Tube Stage Type: 12AX7
• Power:
  • Type: +12 VDC, 1A, center pin positive
  • PSU Barrel Dimensions: 0.5 mm O.D., 2.1 mm I.D., 9.5 mm length