Hi
Darth Dad !
Oh cool, a fellow ROTJ Fett!
Here is me in my ROTJ Fett...
So, to address your question. There are a few options out there on the market.
Cheapest would probably be an “
Aker” setup, which can be acquired through Amazon.
Aker 1505: https://www.amazon.com/VoiceBooster...d=1651973986&sprefix=aker+1505,aps,171&sr=8-2
The other is a bit more spendy and is known as the "
Helical Hypercom". The offer two versions, just the voice changer, meaning you must provide a speaker and mic. And then the other version has those items included. This product has it's own website.
Helical Hypercom: Mandalorian / Boba Fett Voice Changer
And then the more well known product and perhaps the most expensive solution is called the "
TRamp". I've only seen them listed on Facebook and through my last communiqué with them last year, they deal only through Facebook.
TRamp:
TRamp, Clevedon. 8,455 likes · 218 talking about this. Electronics for props and costumes, commissions welcome.
www.facebook.com
And for those that don't wish to speak at all there are vendors out there that produce great products have pre-loaded sound clips of Boba Fett, most of which is taken directly off of the video game Battlefront and Battlefront II. One of the more well known ones in that arena is a product called MiCom Sound Rig 2.0. To see more about it, they have a 9 min demo on how it works:
MiCom Sound Rig:
The MiCom Sound Rig is an 8 trigger device that fits easily into your palm! Each trigger is... Clearwater, FL
www.facebook.com
Hope this helps!

Best,
-Iron