The RapcoHorizon LTIGLBLOX Laptop BLOX with Ground Lift from the BLOX Series adapts audio from consumer-grade devices using a 3.5mm stereo output to work with professional A/V gear requiring an XLR input. This passive direct box requires no batteries and converts input from equipment such as laptops and mobile devices to a single, mono, balanced mic-level output.

The unit features a ground-lift switch which can be activated if ground hum noise is present in the audio. A volume knob allows you to attenuate the outgoing signal. The LTIGLBLOX features a 3.5mm male TRS input hard-wired to an attached 6' cable. The output is a male XLR panel connector on the box.

Converts 3.5mm Line to XLR Mic Level    Volume Control, Ground-Lift Switch    Input: 6' Cable with Male 3.5mm Plug    Output: XLR Male Connector

• Self-contained unit converts input from consumer-grade equipment to a mic-level balanced output
• Ground-lift switch
• Operator volume control of outgoing signal
• 3.5mm male input and XLR male output
• Hand-soldered connections
• Suitable size for your toolbox or portable kit

Related Questions and Answers

Q: 1. Can this box also be used as a re-amping device? Using the XLR output as an input?

A: This device can not be used as a re-amping device. The XLR connection is only meant for a mic level output send to a mixer or interface.

Q: 2. Can the xlr side be used as input or is it only output?

A: No. The XLR side of the RapcoHorizon LTIBLOX Laptop BLOX 1-Channel Passive Direct Box is an output only

Q: 3. Can this be used as a conversion device with the signal coming from an XLR mic connecting to 1/8" adapter into my video camera?

A: No, the RapcoHorizon LTIBLOX Laptop BLOX 1-Channel Passive Direct Box will not work with a microphone. It is intended for use to send the 3.5mm line-level output from a computer to the XLR mic-level input on a professional A/V device like a mixer, amplifier, camera, or recorder. The XLR connector is the output, so it has a male connector and would not work to connect a microphone. A better solution for connecting an XLR microphone to the mic input on a video camera would be to use a simple adapter like the Kopul LMT100 - Low to High Impedance Matching Transformer (B&H # KOLMT100) attached to a standard XLR cable in the length you need. Please note that the mic you are using should either be a dynamic mic that does not require any voltage or a condenser mic that operates using a battery for power or has its own power supply, as the camera will not supply 48V phantom power from its 3.5mm input.

Q: 4. I have Yamaha MWC12 mixer and would like to record directly with a videa camcorder using beachtec DXA-2T. Can I use the RCA rec out or Dual TRS out to connect to this box and connect to DXA-2T via xlr cable and record stereo sound? Thanks.

A: The Radial PRO AV1 is a single channel output unit that sums the incoming stereo signal to a balanced mono output.

Q: 5. ground lift switch positions which lifts ground?

A: Yes, the DIB-443 has a built-in ground lift. Best regards, Hosa Support.

Q: 6. ProAV1 Can this unit output to a laptop's 1/8 microphone input for recording audio from a mixer?

A: No. The Pro AV1 converts consumer input (1/8) to balanced out (XLR) - the opposite of what you want. Radial makes the J-ISO and Pro-ISO that will do what you want. The J-ISO uses a Jensen transformer and is the one you want for studio recording. The J-PRO is good for broadcast use for recording vocal range audio and is cheaper than the J-PRO.

Q: 7. What is the input impedance on this box? I need 1M Ohm or higher.

A: The input impedance is specified as 50k ohms on the PDI-40 Direct Box.

Q: 8. Does it send signal out of both outputs simultaneously (like a splitter)?

A: Yes, it does. When splitting, you will lose a bit of the treble, but it's not a huge difference. I use it in that regime--sending two signals out of it to different gear. Let me know if you want to know more. Good luck.

Q: 9. Are the rack ears reversible?

A: Thank you for your question. The rack ears on the this unit are not reversible

Q: 10. Is this used for connecting consumer grade line level signal -10dBV gear to pro grade line level signal +4dBu gear?

A: Although the dbx DJdi 2-Channel Passive Direct Box's continuously variable input signal attenuator can accommodate a wide range of signal levels, it is not specifically designed for connecting consumer level products to professional gear. The main function of the DJdi is accepting unbalanced input signals and converting them to balanced output signals, and functions best in standard DI applications such as sending a guitar signal to a mixer.