I fail to see much point to the output of an audio interface only to act as a novalty thing, by Behringer 222 was 20 quid/ 25 bucks and I guess they could of saved a fiver by removing the out put port. It seves no more then a monitor for plugging head phones in and since all audio interfaces have monitor ports on them anyway, its just an extra add on.
OP could get the same resalts from plugging there headphones into the laptop
I see your polices on how our singing should be judged has chanced since my last visit, more about judging the recording equipment rather then the teckneeks, still the same s@@t heads about though