Rapco Horizon LTIBLOX Laptop Interface

The Rapco Horizon LTIBLOX Laptop Interface provides a simple way to connect a laptop, portable music player, CD player, or other consumer audio device to a professional PA or mixing system. The compact interface accepts a 3.5mm stereo audio source and converts the signal to a balanced XLR output, making it easier to integrate personal audio devices with professional audio equipment.

Designed as a consumer-to-professional audio interface, the LTIBLOX is especially useful when a presentation computer or portable playback device needs to connect to a mixer or sound system with professional balanced inputs. Its built-in level control allows the operator to adjust the outgoing audio signal directly at the interface.

Connect a Laptop Directly to a Professional Audio System

Many professional mixers and PA systems use balanced XLR inputs, while laptops and other consumer devices commonly provide audio through a 3.5mm headphone or stereo output. The LTIBLOX bridges those two connection types in a compact, easy-to-use package.

Simply connect the 3.5mm stereo source to the LTIBLOX and send the balanced XLR output to the microphone or line input of a compatible professional audio system.

This makes the LTIBLOX a practical solution for presentations, meetings, live events, classrooms, houses of worship, and installed AV systems where computers are frequently used as audio sources.

Built-In Output Level Control

The LTIBLOX includes a rotary volume control that allows the operator to adjust the level of the outgoing audio signal. This provides convenient control at the source interface and can help simplify operation when a laptop or other playback device is connected to a remote mixer or PA system.

The interface also supports stereo or summed-mono operation, providing additional flexibility when integrating portable stereo sources into professional sound systems. A -20 dB pad is also included for managing higher-level consumer audio sources.

Compact Design for Portable and Installed Applications

The Rapco Horizon LTIBLOX is small enough to keep in a laptop bag, equipment case, gig bag, or toolbox. Its compact aluminum chassis makes it convenient for mobile production while also making it easy to incorporate into permanent AV installations.

The unit measures approximately 3.5 inches wide, 1.25 inches deep, and 1 inch high, making it a particularly useful option when space is limited.

Professional Audio Connectivity

The LTIBLOX provides a straightforward connection between consumer audio equipment and professional sound systems:

• 3.5mm stereo input for laptops and portable audio devices
• Balanced XLR output for connection to professional mixers and PA equipment
• Built-in output volume control
• Stereo or summed-mono operation
• -20 dB pad for additional input-level flexibility
• Compact enclosure for portable or installed use

Ideal Applications

The Rapco Horizon LTIBLOX can be used in a wide range of professional and commercial audio applications, including:

• Laptop audio for presentations
• Corporate meeting rooms
• Conference rooms
• Classrooms and lecture halls
• Houses of worship
• Live sound and event production
• Portable PA systems
• DJ and playback systems
• Commercial AV installations
• Connecting MP3 players and other portable audio sources

Rapco Horizon LTIBLOX Key Features

• Converts consumer audio sources to a professional balanced output
• Connects laptops, MP3 players, CD players, and other 3.5mm audio devices to PA systems
• 1 x 3.5mm stereo input
• 1 x balanced XLR output
• Built-in rotary output level control
• Stereo or summed-mono operation
• -20 dB pad
• Compact aluminum chassis
• Hand-soldered connectors
• Lightweight design weighing only 0.4 lbs.
• Suitable for portable and installed professional audio applications

Rapco Horizon LTIBLOX Specifications

Specification	Details
Product Type	Laptop / Consumer-to-Pro Audio Interface
Channels	1
Input	1 x 1/8" (3.5mm) stereo
Output	1 x XLR
Input Format	Stereo
Output Format	Balanced professional audio
Level Control	Rotary output volume control
Pad	-20 dB
Operation	Stereo or summed mono
Height	1"
Width	3.5"
Depth	1.25"
Weight	0.4 lbs.
Manufacturer Part Number	LTIBLOX

Why Choose the Rapco Horizon LTIBLOX?

The Rapco Horizon LTIBLOX solves a common connection problem in professional audio: getting audio from a laptop or other consumer playback device into a professional balanced sound system.

With a 3.5mm stereo input, balanced XLR output, adjustable output level, and compact construction, the LTIBLOX is an easy-to-deploy interface for presentations, live events, classrooms, corporate AV systems, and PA applications.

If you regularly connect laptops or portable playback devices to professional audio equipment, the LTIBLOX provides a compact and practical interface between the two systems.