Check the listing for details. Radial ProAV2 2-Channel Passive A/V Direct Box. Condition: New. Listed at 219.99 USD. Radial ProAV2 2-Channel Passive A/V Direct Box The Radial ProAV2 is a stereo passive direct box designed for audio-video integrators and technicians, with an array of input connector options to easily interface with a wide range of audio equipment. A high performance custom-wound transformer is employed that converts the impedance and balances the line while providing exceptional common-mode rejection. The transformer eliminates noise associated with ground loops. To further reduce susceptibility to noise, the transformer is encapsulated in a nickel metal can, thus preventing RF and electromagnetic induction. The ProAV1 is constructed with 14 gauge steel for durability, while it’s book-end enclosure is designed to protect the switches and connectors from damage. Input connectivity includes stereo RCA, 1/4" and 3.5mm (1/8") for high-impedance instrument and -10dB consumer line-level devices. All inputs may be used as thru-puts and are auto merged to mono to reduce cable infrastructure and audio channel requirements. A +4dB XLR input is also provided to interface professional balanced line-level signals. The output is standard 600 Ohm mic-level for direct interconnect to mixing console mic inputs. These features make the ProAV1 an ideal interface for portable computers, CD players, iPods and other sound sources that must interface to PA systems alongside microphone lines. FEATURES Great-sounding, flexible passive DI High performance custom-wound transformer XLR, 1/4", RCA and 3.5mm inputs Built-in stereo to mono merge function -15dB PAD for wide range of input levels Transformer isolation eliminates ground loops Like a Swiss Army knife for A/V systems Completely passive, no power needed Ultra-tough 14 gauge steel enclosure COOL STUFF 1/4" INPUT and THRU-PUT standard connection for bass, guitar and keyboard RCA -10dB stereo input can be used with CD players, tape decks, VCRs, etc. A second set of RCA jacks can be used as a thru-put -15 dB PAD reduces input level from high output devices like CD players and headphone outputs 3.5mm TRS -10dB stereo input connects PC sound cards and headphone jacks XLR Line input +4dB connection for professional audio sources with side mounted defeat switch XLR Ouput balanced 600Ω miclevel to drive long cables run through snakes & studio patch bays Ground Lift disconnects the ground path at the XLR output Radial transformers for distortion-free signal transfer and 100% isolation from ground loop hum MU-Metal shield for protection against radio frequency and electromagnet interference Book end design creates a protective zone around the jacks and switches 14-Gauge steel welded I-beam enclosure makes it impossible to torque the PC board. Eliminates cold solder joints. APPLICATIONS Converts hi-Z consumer to low-Z mic-level Connect a stereo source to a mono channel Unbalanced audio from CDs, laptop, VCRs SPECIFICATIONS Audio circuit type: Passive, transformer based Transformer: Eclipse ET-DB2, 12:1 ratio Number of channels: Dual channel (stereo) Frequency response: 20Hz ~ 18.5KHz (± 0.2dB) Dynamic range: 128dB Total harmonic distortion: 0.01% from 20Hz~20kHz @-10dB Phase Deviation: 1° @ 100Hz; 8° @ 20Hz Input Impedance: 140k Ohms, unbalanced Output Impedance: 150 Ohms, balanced Maximum Input: +18dB @ 20Hz FEATURES Ground lift Input Connectors: 1/4", RCA, 3.5mm TRS Output Connectors: XLR GENERAL Construction: 14-gauge steel chassis & shell Size (L x W x D): 3.25” x 5” x 1.875” Weight: 0.82kg / (1.8lbs) Shipping size (L x W x D): 102 x 76 x 165mm (4.00" x 3.00" x 6.50") Shipping weight: 1.2 kg (2.60 lbs) Power: Passive, no power required Conditions: For use in dry locations only between 5°C and 40°C Warranty: Radial 3-year, transferable