Radial Engineering R8001112 Pro AV1 Direct Box

• Multi-Input Compatibility: 1/4", RCA, and 3.5mm stereo inputs for diverse source connectivity.
• Transformer Isolation: Eliminates hum and buzz caused by ground loops.
• Mono Output: Combines stereo signals into a balanced mono XLR output.
• Rugged Steel Construction: Built to withstand the demands of live and studio environments.
• Compact Design: Easy to transport and integrate into AV setups.

The Radial Engineering R8001112 Pro AV1 Direct Box is the go-to solution for professionals requiring seamless audio integration of consumer devices into professional audio systems. Tailored for multimedia applications, the Pro AV1 simplifies the process of connecting devices like laptops, tablets, and smartphones to mixing consoles, powered speakers, or recording setups without sacrificing sound quality.

Equipped with multiple input options—including 1/4", RCA, and 3.5mm stereo inputs—the Pro AV1 accommodates a wide range of source devices. Its onboard isolation transformer ensures pristine audio performance by eliminating hum and buzz often caused by ground loops, making it an invaluable tool for AV technicians and live sound engineers.

The Pro AV1 combines stereo signals into a mono balanced XLR output, which integrates effortlessly with professional audio systems. This mono summing feature is particularly useful in live sound scenarios where stereo playback is not required or possible. Its compact design and robust steel chassis ensure durability, while its passive circuitry eliminates the need for external power or batteries, streamlining setup and operation.

Ideal for conference centers, houses of worship, corporate events, and live performances, the Radial Pro AV1 delivers professional-grade audio conversion in a portable and durable format. Whether you're presenting a multimedia slideshow, amplifying audio from a tablet, or connecting a portable device to a PA system, the Pro AV1 ensures a seamless, noise-free connection every time.

Audio Circuit

• Type: Passive, transformer-based
• Transformer: Eclipse ET-DB2, 12:1 ratio
• Frequency Response: 20Hz – 18.5kHz (±0.2dB)
• Dynamic Range: 128dB
• Total Harmonic Distortion: 0.01% from 20Hz to 20kHz @ -10dB
• Phase Deviation: 1° @ 100Hz; 8° @ 20Hz
• Input Impedance: 140kΩ, unbalanced
• Output Impedance: 150Ω, balanced
• Common Mode Rejection Ratio: 100dB @ 60Hz
• Maximum Input Level: +18dB @ 20Hz

Features

• Input Pad: -15dB switchable
• Mono Sum: Merges stereo inputs to mono
• Ground Lift: Disconnects pin-1 at XLR output

Connectivity

• Inputs: 1 x 1/4" (6.35mm) TS, 2 x RCA, 1 x 3.5mm TRS, 1 x XLR (line-level)
• Outputs: 1 x XLR (balanced mic-level)
• Thru Outputs: 1 x 1/4" TS, 2 x RCA

Construction

• Chassis: 14-gauge steel
• Dimensions (L x W x H): 5" x 3.25" x 1.875" (127 x 83 x 48mm)
• Weight: 1.6 lbs (0.73kg)

Environmental Conditions

• Operating Temperature: 5°C to 40°C
• For use in dry locations only

Warranty

• Radial 3-year transferable warranty