Presonus BlueTube DP V2

2 input channels, each with:
High-headroom Class A XMAX™ mic preamplifier with 80 dB gain range
12AX7 vacuum tube gain stage
Tube Drive tube-saturation control
48V phantom power
80 Hz high-pass filter
-20 dB pad to reduce hot input levels
Polarity-reverse switch
Illuminated analog VU input-level meter
Input/Output
2 balanced combo mic/unbalanced instrument inputs
2 balanced XLR main (L/R) line outputs
2 unbalanced ¼” main (L/R) line outputs
Physical
Compact 1/2U chassis
External 12 VDC, 1A power supply

Inputs
Connector Type Neutrik™ Combo
XLR Microphone Impedance 1.3 kΩ
1⁄4” Instrument (Hi-Z) Impedance 1 MΩ
THD+N (unweighted), solid-state <0.005%
THD+N (unweighted), tube stage 0.01% to 30%
Signal-to-Noise >95 dB
Power-Supply Rejection >98 dB
Outputs
Connector Type XLR and ¼” TS
Impedance 51Ω
Power
External Adapter Type +12 VDC, 1A, center pin positive

Dimensions 1/2U 1.75 x 5.5 x 9.5” (44.45 x 139.7 x 241.3 mm)
Euroguitar Reference : 23467