2SK170 BL MATCHED JFET PAIR FOR YOUR AUDIO NEEDS. GENUINE TOSHIBA N CHANNEL 2SK170 BL . IDSS MATCHED AS A SET OF 2 FOR N CHANNEL DIFFERENTIAL AMP TO WITHIN .1MA AT 10 VOLTS. THAT EQUATES TO <2% MATCHING. MOST MEASURE AND FIT IN THE 7 TO 10 mA RANGE . THIS IS THE LAST OF MY CLOSELY MATCHED JFET SETS.