Electro Harmonix Slap-Back Echo Analog Delay Reissue Guitar Pedal (Silver)The late 1970s rarity Electro Harmonix Slap Back Echo Analog Delay Reissue Guitar Pedal is reissued with modern updates and a Pico footprint. The 50s era gave birth to an iconic sound in which a single, short delay was utilized to add depth and rhythmic effect to countless recordings. Design The newly reissued all analog design of the EHX Slap Back Echo delivers this beloved classic sound and more in a Pico sized pedalboard friendly package. With