The unit works 100% and is in excellent condition. This unit has everything you need to get pro studio vocals. The presonus uses the same pre as a Avalon, this unit when it was in production was $900 before presonus changed their company into budget cheap products mainly for the consumer not the pro so with this package you will get professionaly studio results at a very affordable price so jump on this deal, I am selling only because I have two of them and I bought the other one for a backup but never needed this one ever so the unit is definitly made well. Also remember this unit has the presets which means even if your not a seasoned engineer it does not matter its basically set and forget and record. If you don't believe me check out all the good reviews on this unit. If interested email me at diolives777(at)gmail(dot)com or call