Lisnr Inc. isn’t new to the startup game. The Cincinnati audio-beacon company has raised more than $4 million in venture capital, has 21 employees and expects to generate upwards of $1 million in revenue this year, more than double the amount it got last year.

Yet on Monday, Lisnr is joining a startup accelerator that Techstars is running in conjunction with design and advertising firm R/GA. Accelerators traditionally have been intended for entrepreneurs just learning how to turn an idea into a business, not more established businesses like Lisnr.

Image: Techstars Managing Partner David Brown says the accelerator is planning a second program with R/GA. Techstars