Check the listing for details. Radial Engineering PROAV1 Passive Multimedia Direct Box. Condition: New. Listed at 149.99 USD. When you have a changing cast of consumer audio and line level signals that need to be summed and sent to one mixer channel, the Radial ProAV1 gives you everything you need in one passive direct box! Inputs are available via 1/4", RCA, 3.5mm stereo, and line-level XLR connections, meaning you can connect virtually any consumer device to your PA system. Stereo signals are summed into one XLR out, giving you more room to work with on your mixer. RCA thruputs are available for consumer-level recording, while a 1/4" thruput allows this to be used like a usual stage DI box between your electric guitar, your amp, and your mixing board. Like any good direct box, the ProAV1 offers transformer isolation to help eliminate noise and keep a linear frequency response, a -15 dB pad switch to manage how much signal you're sending through, and a ground lift to nix out buzz from ground loops. All of this fits in Radial's rugged bookend-style chassis. If you're seeking a versatile multi-media DI box with a mono output, the ProAV1 is a great choice. Order yours today!FeaturesVersatile direct box for multimedia applicationsEasy-to-use, ultra-quiet passive designTransformer isolation eliminates hum and buzzHandles huge transients without distortionRCA and 1/4" thruSpecificationsAudio Circuit Type: Passive, transformer-basedTransformer: Eclipse ET-DB2, 12:1 ratio# of Channels: Single-channel (mono)Frequency Response: 20 Hz - 18.5 kHz (±0.2 dB)Dynamic Range: 128 dBTotal Harmonic Distortion: 0.01% from 20 Hz - 20 kHz @ -10 dBPhase Deviation:1° @ 100 Hz8° @ 20 HzInput Connectors: 1/4", RCA, 3.5mm TRS, XLRInput Impedance: 140 kΩ, unbalancedCommon Mode Rejection Ratio (CMRR): 100 dB @ 60 HzMaximum Input: +18 dB @ 20 HzOutput Connector: XLROutput Impedance: 150 Ω, balancedThru Connectors: 1/4", RCAFeatures: Input pad, mono sum, ground liftConstruction: 14-gauge steel chassis and shellPower: Passive, no power requiredConditions: For use in dry locations only, 5-40°CDimensions (H x W x D): 1.875" x 3.25" x 5"Weight: 1.6 lbs (0.73 kg)