positive grid spark amplifier

3:08

15:37

3:44

3:10

4:05

1:15

5:57

12:53

16:16

15:02

8:23

6:31

4:43

13:25

7:14

11:56

3:45

3:34

4:48

13:53

7:56

3:53

3:17

3:44

3:44

2:25

2:46

13:54

15:37

17:33

4:29

9:23

7:38

7:27

6:35

8:24

13:54

16:16

1:15

5:32