I just bought a Yamaha RX-V3800 out of the box and it did not come with the optimizer microphone or the Zone 2/Zone 3 remote control. Where can I purchase these?

Hello Clark, I pass the link to download the user manual of your Yamaha, on page 115, everything about the use and multizone connection appears and on page 117 it indicates how to select the sound sources for zones 2 or 3
I recommend that you read this part of the manual carefully, to get a better use of whether Yamaha
I hope I can solve your concern
Greetings Franco Dosil

Hola Clark, le paso el link para que descargue el manual de usuario de su Yamaha, en la pagina 115, aparece todo lo referente al uso y conexi?n multizona y en la pagina 117 indica como seleccionar las fuentes de sonido para las zonas 2 o 3
Le recomiendo que lea detenidamente esta parte del manual, para lograr un mejor aprovechamiento de si Yamaha
Espero logre solucionar su inquietud
Saludos Franco Dosil
https://it.yamaha.com/files/download/other_assets/6/318716/RX-V3800_E.pdf
https://in.yamaha.com/files/download/other_assets/8/318718/RX-V3800_RTL.pdf

This might be what you are looking for...

http://www.ebay.com/itm/Generic-Remote-Control-Fit-For-RX-V3800-RX-V663-RX-V757-RX-V863-RX-V463-WK22730-/182754079829?hash=item2a8cfdf455:g:WGAAAOSw81dZsq6e

Good luck! Generic Remote Control Fit For RX V3800 RX V663 RX V757 RX V863 RX V463...

Zone 2 Setup on the RX-V773 using the ZONE2/PRESENCE Extra Speakers The RX-V773 extra speaker terminals can power one set of speakers for Zone 2 or Presence speakers. If the extra speaker terminals are utilized then the RX-V773 cannot be set for Bi Amp (Surround Back/BI-AMP terminals). Setting the Extra Speaker Terminals Note: The RX-V773 remote control will be used to access the On Screen Menu of receiver. 1. Press the On Screen button on the remote control to enter the On Screen Menu. 2. The On Screen display should be displayed on the TV/Monitor. 3. Press the Arrow Down button on the remote until Setup comes up in the screen. 4. Press the Enter Button on the remote control. 5. The Setup Menu will come up across the TV/Monitor screen. 6. Use the Arrow Left & Right buttons on the remote to navigate to Speaker. 7. Press the Arrow Down button on the remote to select Manual Setup. 8. Press the Enter Button on the remote control to enter Speaker Manual Setup menu. 9. Speaker Manual Setup menu with Power Amp Assign highlighted will come up. 10. Press the Enter Button on the remote control to enter Power Amp Assign menu. 11. Speaker Manual Setup, Power Amp Assign menu will come up with Basic highlighted. 12. Press the Arrow Down button on the remote to select 7ch+1ZONE. 13. Press the Enter button on the remote to select 7ch+1ZONE. 14. Press the On Screen button to exit the on screen menu. To control Zone 2 using the RX-V773 remote, the switch at the upper left side (above the BD/DVD Scene button) of the remote must be set to Zone 2. To see the operations on the front of the Yamaha receiver you must press the Zone Control button on the front of the receiver. Note: Only analog signals can be sent to Zone 2. If you want to output the sound from Zone 2, connect an external component to USB Thumb drive, USB iPhone/iPod, Network, AV 5-6 or Audio 1-2 by analog connection. For AM/FM radio the antennas must be attached.

Read up on the myths and legends of bi-wiring (BUY wiring) and redeploy those amps and extra speaker wire to Zone 2 where they'll actually serve an audible purpose.

http://forums.audioholics.com/forums/showthread.php?t=678

Not sure what for but through the tape monitor jacks I think unless you have pre/main jacks. Why another preamp when the receiver already has one?

You can always do a system reset. there should be instructions in the handbook

No, they are brand and model specific. If you visit a local retailer that sells Yamaha, tell them your model # and they may even have a mic you can use. If not, let me know, I'm a Yamaha dealer and can get it for you or point you in the right direction to get it. Hope this helps

It can be 737, but I'm not sure... //David

To get audio with this set up also hooked up analog audio RCA cables for the audio for each piece of equipment for 2 channel out put. Zone 2 will not out put a digital signal and this receiver will not down convert a audio signals to analog if using digital audio hook-ups.

I wouldn't hook anything up except what Yamaha recommends to the speaker output terminals. That's pretty much asking for trouble!

barneyluc