PreSonus BlueTUBE Stereo Tube Mic-preamp Finally, a stereo tube preamplifier that fits everyone’s budget. The BlueTUBE provides amazing results for vocals, keyboards, acoustic, electric and bass guitars. The BlueTUBE’s output flexibility of both XLR and 1/4” TS jacks lets you send signals to both your amp and console simultaneously. The BlueTUBE also allows you to create a multitude of audio textures and characters by using the variable tube-drive circuit. Features Dual Servo Microphone Preamplifier Front End with Tube Line Drive Amplifiers. 20dB Pad. 48V Phantom. Phase Reverse. Eight Segment Level meter. Sovtek 12AX7 Low Noise Tubes. Fits perfectly in the PreSonus BMRA rack adapter with the PreSonus BlueMax. Warm, Silky Contours. Output section includes XLR and 1/4" connectors for driving two separate signal paths. 1/4", high Z input on the front panel for instrument preamplification. The BlueTube is housed in a half rack space steel chassis with a high quality, anodized aluminum front panel. Specifications: Input Connector Type: Neutrik™ Combo XLR Impedance: 5K Ohms Hi-Z, 1/4": 1 Meg Ohms Output Connector Type: XLR and 1/4" TS Panels Controls Tube Drive: 0dB to +30dB Gain: 0dB to 40dB Phase Reversal -20dB Pad Phantom Power Performance THD � Noise (Unweighted): 0.05% Signal To Noise: >90dB Power Supply Rejection: >98dB Amplifier Type: Dual Servo Meters LED: -28dBu to +18dBu Power Supply Type: Linear Input: 18V AC Power: 20 Watts Transformer: External Physical Mounting: BMRA Rackmount Adapter Dimensions: 8" x 4.5" x 1.75" Weight: 7 lbs.