Improved quality in sound and design in the PreSonus TubePre preamp/DI box.
- 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
Backlit VU meter
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
PreSonus TubePre V2 Single-Channel Tube Preamplifier/DI Box
The masters at PreSonus have been designing preamps for a long time, and they always focus on audio quality first and foremost. Now they’ve upgraded on their most popular single-channel preamp, the TubePre v2 is focused on improving an already high-quality sound. Like the original TubePre, the new version is a fully professional tube preamp, with a dual-servo (no capacitors) gain stage that lets you boost the program signal to smoking hot levels 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.
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. Plenty of professional extras 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, though. Thanks to its separate instrument and mic inputs, it also serves as a dynamite direct box (DI) for guitars and basses. And it’s small enough to carry almost anywhere, although you also can screw-mount it to a standard rack tray.
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Connector Type: XLR, female, balanced
EIN: -131 dB, 20 kHz BW, max gain, Rs=40O, A-wtd -128 dB, 20 kHz BW, max gain, Rs=40O, unwtd
Frequency Response: 20Hz – 20kHz, -0.3 dB, +4 dBu, unity gain 5Hz – 120kHz, -3dB, +4dBu, unity gain
THD+N: 0.01%, -10dBu, 1kHz, unity gain, 20 kHz BW, unwtd
Dynamic Range: 115dB, 1kHz, unity gain, 20 kHz BW, A-wtd 107 dB, 1kHz, unity gain, 20kHz BW, unwtd
Input Impedance: 1.3 kO
Phantom Power: +48 VDC, 10 mA
Connector Type: 1/4” TS, female, unbalanced
Input Impedance: 1 MO
Connector Types: XLR, male, balanced 1/4” TS, female, unbalanced
Maximum Output: +20 dBu
Output Impedance: 51O
Type: +12 VDC, 1A, center pin positive
PSU Barrel Dimensions: .5 mm O.D., 2.1 mm I.D., 9.5 mm length