Goals
Small and portable amplifier with integrated speaker
At least 3 microphones, and at least 2 of those wireless
Cell phone interface for conference calls
Microphones with tailored frequency response for speech
Including accessories, eg. microphone stand and extension cords
The system

System With Accessories (Excluding Stand/Gooseneck/Clip)
The following parts make up the main unit:
TOA WA-1822 meeting amplifier
2 WTU-4800 A01 tuners installed in the bottom left/right corners
These accessories are also necessary:
2 WM-4220 A01 handheld microphones (or consider WM-4300 and WM-5320 lavalier)
Sennheiser e835 wired microphone
1.5 ft XLR female to 1/4inch TRS/stereo cable: Monoprice 4767
1.5 ft XLR male to 1/4 TS/mono cable: Markertek SC1.5XS
JK Audio BlueDriver-F3
25 ft XLR microphone cable
microphone stand
Atlas Sound GN-13E 13 inch flexible microphone gooseneck
On-Stage Stands MY200 universal microphone clip
power cable
15 ft extension cord
Notes
It would be better to replace the BlueDriver-F3 with a direct audio input. For more information, see Speech Reinforcement.