A Fort Wayne-based retailer of music and sound equipment said Friday that it plans an expansion that would roughly double the size of its headquarters campus and create more than 300 jobs by 2016.

Sweetwater Sound Inc. plans to spend $23.5 million to add 110,000 square feet to the 40,000-square-foot distribution center, recording studios and training center expansion it completed in 2006, according to the Indiana Economic Development Corp. The additional space will be used for warehousing, and sales and marketing functions.

The project will result up to 316 workers being added to Sweetwater's existing roster of 400, the IEDC said. The announcement did not disclose the average pay of the new positions, but called the positions "high-wage jobs."

The IEDC offered as much as $2.75 million in tax credits and $150,000 in training grants. The incentives are performance-based. The Fort Wayne-Allen County Economic Development Alliance has asked the city of Fort Wayne to consider a property-tax abatement.

Sweetwater was started more than three decades ago as a recording studio in the Fort Wayne home of Chuck Surack, who remains the president.