While Jim Marshall's amps were sold worldwide under the Marshall name, domestically they were branded as Park Amplifiers. Known for their rarity and extra "heat" compared to Marshall-branded amps, Park models became highly coveted in the UK. Mitch Colby, with decades of experience at Marshall, has spent the last 12 years perfecting the Park lineup, recreating the iconic tones of Jim's early circuits while also designing four new amplifiers to continue the legacy of Park Amplifiers.