Shin-ei ER-23 Echo Reverb Master Wah This is a knob-twiddler's dream

This is a knob-twiddler's dream of an effect: your guitar will never sound the same again

The super-slow varispeed motor option offers the full functionality of regular speed uses

near mint condition - sought-after Rev 3

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One of Korg's first polyphonic instruments

Shin-ei ER-23 Echo Reverb Master Wah This is a knob-twiddler's dreamRare 70s spring reverb pedal. Looks brilliant. Sounds great. And right now we've even got a choice of two units in different colour schemes we really are too good to you (you can find the other ER 23 here both are the same price). Full name is: Shin ei Echo Reverb Master ER 23 Adaptor Special Expander Design by Yellow. They definitely had fun with the look of this one The spring sounds good and the low and high impedance mic inputs give different