The Tie Audio TBT-1 is a mobile radio link for connecting Bluetooth-enabled devices such as computers, mobile phones, or stereo systems to the analog inputs or outputs of other devices. It operates either in receive or transmit mode and achieves an operating time of 6 to 8 hours via the built-in rechargeable battery. Application scenarios include wireless operation of wired headphones, upgrading a hi-fi or studio monitor system with a Bluetooth channel, or controlling a soundbar with a player without Bluetooth, such as a record player.