VOX Amplification Recalls Amplifier Carrying Cases Due to Risk of Injury. The clasp on the shoulder strap is defective and can fail, allowing the amplifier to fall and pose a risk of injury to consumers. This recall involves the nylon carrying case sold with Night Train guitar amplifiers. The black carrying case has metal clasps and a nylon arm strap. ''OX''is printed on the front pocket of the carrying case. The carrying cases were sold with amplifiers with model number NT15H. Model numbers can be found on the rear panel of the amplifier. Sold at: Music instrument stores nationwide and on the Internet from April 2009 to April 2010 for about $700 for the amplifier. The carrying case was sold with the amplifier.