the v machine has a guitar/line input, can be used,but its a bit underpowered right now cause it hasnt been upgraded since then,there was a guitar floorboard version wich sadly remained a prototype
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... the receprtor is a bit pricey its true, but its a preofessional tool,not a toy and it can do everything,not just guitar
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you can plug an entire band in the receptor and go live without a single other effect/amp/pre/ everything
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you can find used receptor for like $500