Sony STR-GX80ES Technical Background - Page 32

One-plate/dual-pellet output transistors How do you combine the power of parallel output transistors with the "focus" of single-ended transistors? The STR-DA3100ES output transistors achieve this with a one-plate/dual-pellet design. Each of these is actually a pair of matched, high-speed transistors mounted to a common plate. In this way operating temperatures and current fluctuations remain perfectly balanced. It's another way that Sony fights thermal modulation distortion. As a further protection, Sony mounts these transistors on oversized extruded aluminum heat sinks. With one-plate/dual-pellet output transistors, the temperature and current fluctuations of one transistor are automatically corrected by the complementary transistor mounted on the same plate. Master In-Line Design With seven channels of amplification, it's difficult to maintain uniformity. That's why Sony configured the STR-DA3100ES and DA2100ES power amplifiers with a master in-line design. This achieves uniformity in both electrical and mechanical characteristics, for superior richness and imaging. Lined up in a neat row, the output transistors of the STR-DA2100ES take advantage of Sony's Master In-Line design. ES Receivers v1.0 Page 32