User contributions
- 08:37, 8 December 2009 (diff | hist) . . (+2) . . Octave Amplifier
- 08:36, 8 December 2009 (diff | hist) . . (+1) . . Octave Amplifier
- 08:34, 8 December 2009 (diff | hist) . . (+17) . . N Octave Amplifier
- 08:32, 8 December 2009 (diff | hist) . . (+36) . . Integrated Amplifier (→O)