4G℞E AMP  325mW | 1/8" in | 1/8" line-level out | 1cm speaker for personal practice | on/off switch | $40us | please email c@4gre.org to order
power base options
9v center negative $10us
micro usb B $10us
micro usb C $10us
open back $5us
usa shipping $5us. Please inquire for world shipping rate.

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