It says "Input - Thru" on top, but where the thru signal come out?

All the inputs are connected in parallel, so you can access the thru signal from the RCA or 3.5mm jacks if you use the 1/4” inputs for example. If that works for what you need it’s great, but that’s one reason I don’t much care for the proAV2; you can’t just use it as a regular old passive instrument DI without specialty cables or adapters. I am an instrumentalist, DJ, and sound guy, and my advice for the ultimate in “oh sh#%” flexibility, is to get at least 1 proAV1 box. First off, they are excellent standard instrument DIs, so you can easily send signal to your amp and the board like you always have. Secondly, They have bailed me out of problems several times in my career when running sound, when pieces of gear have broken, or I’ve forgotten, or just don’t have, a particular cable. In those cases, it doesn’t matter if you preserve the stereo field; you just need to get a signal to any available input, and the proAV1 makes that easier. You can, for instance, sum a 3.5mm stereo signal from a computer or phone, into a single XLR or 1/4” output on the proAV1. With the PRoAV2, you better have 2 cables and 2 inputs on your mixer ready to go, or you won’t be hearing the left or right channel from your source, which could make for some really weird results. That said, For true stereo instruments, or preserving stereo signals from AV devices or computers, the proAV2 is the right tool for the job, but you must have 2 inputs available on your mixer.

Could this Be used to Output main LR as a separate out into say a Video Camera/GoPro or Phone to get a MONO/Stereo Balanced Mixed?

Not sure what you are trying to accomplish. If your camera has a line out that you can connect a cable to, this will work, but not sure what you are trying to do.

Can i use all 1/4 input and rca at the same time?(sending audio input from my keyboard(2 x 1/4) and audio input from my usb-dac(rca) ) thank you

I'm deferring all specific recommendations to the ProAV2 user guide, which can be found on the Radial web-page (http://www.radialeng.com/proav.php). My cursory view of the manual leads me to believe that all input connectors could be used because they are all summed by a resistor-mixer. Its multiple connector types are typically for convenience and can be used as "thru-puts", but summing various inputs does look possible.

Is this the perfect gear if i use vst (pianoteq, kontakt) a lot? from the mac, it can convert to two xlr and for my 2 yamaha hs8 or hs5?

The proav2 is the swiss army knife and yes this is exactly the type of situation you would use this for. Thank you

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🎧 Elevate your audio game with the ProAV2 – where clarity meets versatility!

BUZZ FREE PERFORMANCE - BUZZ technology eradicates ground loop hum for crystal-clear sound.
PRO GRADE TRANSFORMER - Custom Eclipse ET-DB2 transformer delivers warm, natural sound from 20Hz to 20kHz.
VERSATILE CONNECTIVITY - Swiss military-grade inputs support 1/4", RCA, and 3.5mm devices seamlessly.
ULTIMATE SIGNAL CLARITY - Passive design ensures zero distortion and pure audio fidelity.
TECHNICIANS SWISS ARMY KNIFE - Compact, rugged, and ready to solve any AV integration challenge on the go.

The Radial Engineering ProAV2 Stereo Direct Box is a compact, passive audio interface designed for professional AV integration. Featuring a custom Eclipse ET-DB2 transformer, it delivers warm, natural sound across the full audio spectrum while eliminating ground loop hum with BUZZ technology. Equipped with versatile Swiss military-grade inputs (1/4", RCA, 3.5mm), it supports a wide range of devices, making it an essential tool for technicians and audio professionals seeking reliable, distortion-free signal management.

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