Ramraiders escaped with DVD players after reversing a stolen car into the rear of an electrical shop.
The raid at Sevenoaks Hi-Fi in Western Road, Brighton, happened at about 2.30am today.
Martyn Hook, the shop manager said: "We are still calculating the loss but several DVD players were taken.
"We are now stepping up security."
A white and blue turbo Escort was used in the raid and police are appealing for witnesses.
Anyone with information should contact Brighton and Hove CID on 0845 6070999.
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