PreSonus - TubePre v2 Mono Tube Mic Preamplifier / DI Box

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.

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. We've 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.

More Than a Mic Preamp

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.

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

Specs:

Mic Input
Connector Type: XLR, female, balanced
EIN: -131 dB, 20 kHz BW, max gain, Rs=40?, A-wtd -128 dB, 20 kHz BW, max gain, Rs=40?, 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 k?
Phantom Power: +48 VDC, 10 mA

Instrument Input
Connector Type: 1/4" TS, female, unbalanced
Input Impedance: 1 M?

Analog Output
Connector Types: XLR, male, balanced 1/4" TS, female, unbalanced
Maximum Output: +20 dBu
Output Impedance: 51?

Tube Stage
Type: 12AX7

Power
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

Physical
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 lbs (2.27 kg)