Fosi Audio IM4 Review: Wide open sound for $99 For years, Fosi Audio has been the budget audiophile’s best friend, churning out those surprisingly capable little desktop amplifiers that sit on dorm room desks and office workstations everywhere. They built an empire on little black boxes that make speakers sing for pennies on the dollar. But with the IM4, the company is trying something […] Post Fosi Audio IM4 Review: Wide open sound for $99 at Root-Nation.com.

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