This listing is for four matched pair of Renesas lateral mosfet 2SK1058/J162 for power amplifier output stage. Lateral mosfets are renowned for their linearity and specialized for audio application. 2SK1058/J162 has been widely used in high end power amplifiers such as Goldmund's Telos series.
These 4 pairs are tightly matched, in the sense that the Vgs of the four pieces of N-channel and the 4 pieces of P-channel are matched respectively. We matched these lateral mosfets by curve tracers.