JBL has introduced its Duet II and Duet III speakers. Designed for use with a computer, iPod dock, or other 3.5mm audio source, both the Duet II and Duet III feature a silver and black champagne glass-like vertical design, onboard digital amplifiers, and Computer Optimized Equalization which optimizes stereo imaging and system response off-axis. The Duet II system offers 6 Watts of power per satellite, Phoenix SE drivers, and is ten inches tall, while…