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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
80Hz high-pass filter
Instrument input select
Phase reverse switch
Backlit VU meter
Powered via an external (included) 12VDC, 1A power supply
In the Box
PreSonus TubePre v2 - Tube Preamplifier/DI Box
External Power Supply
One (1) Year Warranty
Table of Contents
Number of Channels
1 x XLR Microphone 1 x 1/4" TS phone Instrument
Microphone 1.3kΩ Instrument 1MΩ
Microphone -15dB to +65dB Instrument -30dB to +50dB
1 x XLR 1 x 1/4" TS phone
Maximum Output Level
Microphone 20Hz to 20kHz, -0.3dB (+4dBu, unity gain) 5Hz to 120kHz, -3.0dB (+4dBu, unity gain)
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
Microphone 115dB, 1kHz, unity gain, 20kHz BW, A-weighted 107dB, 1kHz, unity gain, 20kHz BW, unweighted
+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