I thought this was posted already but cant find it, so sorry if it is.
M80 mix amp plugs straight into an Xbox one controller (old style headset connector, not the jack) . The mix options are great and all controlled from the M80.
Halo 5 edition; this means its blue, says 'Halo' on the underside of the amp and comes with an item code for Halo 5, no one will ever know!
reduce by £45 from an already low (lower than the other m80+A40 prices) £139.99.