Sale: $4600 如題,35Wrms x2 at 8 ohms, as new 7591 x4, 6SN7 x2, 12AX7 x1, 5AR4 x1. Upgraded with 7591 DC balance and bias controls, 6SN7 driver ac balance control. 可以不用前級, CD直推。 117Vac input. 請参考網上Stephen H. Lafferty大作: http://www.tronla.com/html/st-70 mods.html