Boss EH-2  Enhancer Pedal- Taiwan - August 1990 ( NO BOX) ( Pre Owned) ZB78498

The Boss EH-2 Enhancer is a discontinued pedal that acts as a frequency-dependent expander, boosting higher frequencies dynamically based on playing intensity. Key specs include a 9V DC power supply, Sens, Frequency, and Mix controls, standard input/output jacks, and the ability to be powered by battery or optional AC adapter. The pedal adds clarity, sparkle, and dynamics to a guitar's signal, with the Mix knob offering positive or negative phase mixing and the Sensitivity knob controlling how hard you must play for the effect to occur.  

• Power: 9V DC Battery or optional AC Adapter (Boss PSA-240) 
• Current Draw: 24mA (at 9V DC) 
• Controls:
• SENS (Sensitivity): Adjusts how hard you need to play for the effect to kick in. 
• FREQUENCY: Selects the specific upper midrange frequencies that will be enhanced. 
• MIX: Controls the level of the effect. Turning it clockwise offers a natural enhancement, while turning it anticlockwise provides a different (negative phase) enhancement. 
• Jacks: Input, Output, and AC Adaptor 
• Indicators: Effect On/Off indicator, which also serves as a battery check indicator. 
• Functionality
• Frequency-Dependent Expander: 

  Unlike a compressor, the EH-2 enhances the louder parts of your signal by boosting higher frequencies dynamically as you play harder. 
• "Always On" or Mix Enhancement: 

  It can provide a subtle gloss to the sound, making it suitable as an "always on" pedal. The Mix knob can also mix in the processed signal with your dry signal, allowing for a blend of clean and enhanced sound. 
• Use Cases:
• Adding Polish: 

  Enhances clarity and makes notes more defined, giving your sound extra polish and muscle. 
• Cutting Through a Mix: 

  Effectively increases the presence and sheen of lead parts, helping them cut through a mix. 
• Compensating for High-End Loss: 

  Can be used at the end of a pedal chain to restore high-end frequencies lost from multiple buffered pedals. 
• Studio Recording: 

  Useful for adding a dynamic presence to a guitar signal when recording.