ADL or Alpha Design Labs are to release their updated GT40 with a digital pre amplifier built in to this version. Sporting a 24/192 wolfson DAC and ability to record, and power a set of headphones with its built in headphone amplifier. They are also realeasing a smaller cruise headphone amplifier with the same casework design and aluminium case. This USB powered head amp comes with a 24/96 USB input and an analogue input with a gold plated 3.5mm output.