The deal follows a year of negotiations between the three. Audio T has 13 branches in the south east, plus a newly-opened 'Select' store in Egham; Audio Excellence has four branches in Wales and the west of England; and there are six Practical Hi-Fi outlets in the north west.
The stores will trade as part of the Audio T group and will all, in due course, re-brand as Audio T.
By combining into a larger group, Audio T says it will be able to offer its customers even better deals, a wider range of brands and will offer 24 collection points for its 'click and collect' website store selling many products not generally available on the internet.
Audio T also runs the Bristol Sound and Vision Show, in partnership with What Hi-Fi? Sound and Vision, and will take charge of the Home Entertainment Show in Manchester.