The Danelectro Chicken Salad Vibrato!!! If you know, you know!

Key technical and usability details include:

• Optical Circuit: It utilizes a "lighthouse" assembly containing a light source and four light-dependent resistors (LDRs), similar to vintage Uni-Vibes, rather than standard electronic phaser circuits. 
• Modification Potential: While stock units are often described as sounding like a "cheesy phaser," they can be modified to sound significantly more like a true Uni-Vibe by adding aluminum foil to the light housing for better reflection and adjusting a trimpot to increase the voltage swing. 
• Power Consumption: The pedal uses an incandescent bulb (or LED in later versions) which consumes batteries quickly; users are advised to use a dedicated 9V DC power supply for reliable operation. 
• Build Quality: The unit is made of plastic and uses standard Danelectro electronic switching, which some users consider fragile; many owners choose to rehousing it in metal or adding true bypass for durability. 
• Sound Characteristics: It provides a warbly, swirling modulation that works well with fuzz and distortion for psychedelic rock tones, though it can lose some low frequencies at certain settings