GaN PowerDAC – It's Peachtree's newest GaN1 [$1'999], a 200wpc switching power amp with single 24/192 S/PDIF input and zero negative feedback driven by a 450-watt regulated power supply. The output devices are gallium nitride for faster switching and lower dead times. Among others, switching GaN-based amplifiers are available from AGD and Merrill. It's a still developing sector currently dominated by models far costlier than Peachtree's. However, none of them are 'digital' amps like the GaN1. Peachtree contend they're first to offer one. Early birds can benefit from a beta-testing discount.