The Radial Engineering ProAV1 is a passive multimedia DI box for connecting instruments, laptops and other audio sources to professional PA and recording systems. It combines stereo inputs into a single balanced mono XLR output, with transformer isolation to help reduce hum and ground loop noise. No batteries or external power supply are required.

Preowned with visible scratches, scuffs and paint wear on the housing. The underside non-slip pad shows wear. Please refer to the photos for the actual item and its condition.

Key Features:

• Single-channel passive DI with stereo-to-mono summing
• 6.35mm, RCA, 3.5mm TRS and balanced line-level XLR inputs
• Balanced mono XLR output
• 6.35mm and RCA thru connections
• Transformer isolation to help reduce hum and buzz
• Ground lift switch and −15dB input pad
• Durable steel housing; no external power required.