Along with a few IFA 2012 announcements, Sennheiser peeled back the wraps from its HDVA 600 headphone amp, an analog flavor of the previously unveiled HDVD 800. Like its sibling, the freshly revealed hardware sports a glass panel for peeking at its innards and an anodized aluminum exterior, but leaves the digital inputs behind. While the 800 carries a hefty $2,000 price tag, the 600 will set customers back a small
