Manufactured in 2003 (Serial: BT-0301A277), this is the classic "Blue" half-rack unit known for its simplicity and warm analog character. It’s a great way to add tube saturation to vocals, bass, or sterile digital synth tracks.  Key Features: • Dual-Channel Design: Two independent channels with XLR and 1/4" combo inputs.  • 12AX7 Vacuum Tube: Provides adjustable "Tube Drive" for everything from subtle warmth to gritty saturation.  • Versatile I/O: Features both XLR and 1/4" outputs for each channel, allowing you to drive two separate signal paths simultaneously.  • Essential Controls: Includes 48V Phantom Power, -20dB Pad, and Phase Reverse switches for each channel.  • Metering: 8-segment LED input meters for precise gain staging.  Condition & Testing: The unit is in good physical condition with only minor rack wear. It has been fully tested: the pots are clean, the tube glows as it should, and the signal is strong on both channels. Includes: • PreSonus BlueTube V1 Unit • original 18VAC power supply is included