Hybrid Darlington AF Power Amplifier 50W ± 33 ÷ 53V 5A 8Ω THD: 0.03% 10P Sanyo Wafers, equivalent: STK-0050-II STK0050MK2 STK00502SYQ. Kenwood Marantz Onkyo Panasonic & Pioneer Cross Reference: 222022 HC10031030.
