As of August 2026, Stacked Overdrive is retired.

DigiTech RPx400 · Stacked Overdrive

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RPx400

[ owner photo · DigiTech RPx400 ]

A guitar multi-effects floor processor in DigiTech's RP series, built with a computer recording interface.

[ owner photo · DigiTech RPx400 ]

A guitar multi-effects floor processor in DigiTech's RP series, built with a computer recording interface.

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