I have pre-ordered several GH4s (without YAGH add-ons). If anyone from jwsound wants to play with them when they arrive, give me a shout. This site is a goldmine of information for me (not primarily an audio guy, just a normal filmmaker) so I'd love to pay it back a bit.
I took one look at the YAGH and thought "hmm... I'd rather put that $2K towards something from Sound Devices or Zaxcom..."
Maybe Sound Devices will announce a 4K HDMI recorder that works with it (Atomos already have - and they have 2 channels of XLR with pre-amps, plus 8 channels of digital, presumably from the HD-SDI option - http://www.atomos.com/shogun/)
My other thought was instead of the YAGH, get a Zaxcom QRX200 wireless receiver and plug that in to the GH4's minijack audio input. Monitor that feed via headphones plugged into the GH4. Send audio to it from TRX742 and / or TRXLA2 / TRXLT2, recording backup to SD card. Most of the time the audio feed from the QRX200 should be good... but in case of emergency or if you want better quality, go to the SD card backups and sync via Pluraleyes.
Is that an utterly crazy idea? Otherwise, could run around with my 702T... but somehow the light weight setup of the GH4 kinda inspired me.
Bruce Allen
www.boacinema.com