AC DC's latest box set will double up as a working amplifier.

The Backtracks set of three CDs, two DVDs and a vinyl album will be housed inside a guitar amplifier - an industry first.

Only 50,000 of the sets will be released on 10 November (09).

The albums feature remastered rarities, while the DVDs include all the band's videos and footage from a 2003 Munich, Germany concert many fans believe is the Hell's Bells group's best.

Meanwhile, the rockers' 2 December (09) concert at the 65,000-capacity River Plate Stadium in Buenos Aires, Argentina has sold out in less than a day. A second show has been added for 4 December (09).

