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Presonus BlueTube DP Dual Preamp

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This used Presonus BlueTube DP Two Channel Mic Preamp comes with the Power Adapter.

This unit is in good condition with normal wear from use, has been fully tested, and works great. Please see pictures for details on item condition.

Product Details:
The Presonus BlueTube DP is a stereo microphone and instrument preamp with a hybrid tube and solid-state circuit design. The unit utilizes a single 12AX7 tube and independent drive knobs for dialing in the desired amount of tube "warmth."

Despite its diminutive size and low price, the Blue Tube is well built and well featured. It uses Neutrik Combo connectors to provide two XLR mic inputs and two 1/4-inch high-impedance instrument inputs on either side of its blue, brushed-aluminum front panel. Controls are laid out in mirror image (from left and right of center), with each side providing a Gain knob and Drive knob, switches for polarity reverse, and a 20 dB pad. In the center is a global 48V phantom-power switch. All five switches are push-button style, and the four knobs are continuously variable. Each channel also provides an eight-segment output meter, with green LEDs at -28, -14, -9, -3, 0, and +3 dBu, a yellow "caution" LED at +9 dBu, and a red overload indicator at +18 dBu.

The BlueTube's enclosure is very sturdy, and the knobs and switches have a nice feel. Although there isn't a dedicated power switch, a red front-panel LED indicates power on when the unit is plugged in through the included wall-wart power supply. (Using an external transformer is one way PreSonus could keep internal noise and costs down.)

The Blue Tube's rear panel provides XLR balanced and 1/4-inch unbalanced outputs. Each output has its own amp, allowing for simultaneous output from the two jacks on each channel. That is useful for sending a signal to two places at once, such as to an amplifier and a mixing board.

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