Acoustic Sound Design (through their Amazon storefront) has the JBL PartyBox 100 on sale.

JBL PartyBox 100 Regularly 259.95 on sale for 207.95 [amazon.com]

Includes:
1x JBL Party Speaker
1x Quick Start Guide
1x Warranty Card
1x Safety Sheet
1x AC Power Code (AC Plug varies by Region)

Features:
Power Inputs: 100 240V AC
Input Terminals: USB port, 3.5mm Aux in, Mic/Guitar with volume control