Idiotbox Effects Death Ray Frequency ManglerMaker: Idiotbox Effects Model: Death Ray Frequency Mangler Condition: New Description: The Death Ray Frequency Mangler is AWESOME! Its like plugging your guitar into a fuzzed out Atari. This pedal can go from a high filtered squelchy fuzz to a low buzzed out bit crushy mess! The Z knob controls the main pitch of the square wave divider while the A knob kind of slews the pitch so to speak. With the A knob on full blast the Z knob gives more of what you