Whining like its possessed
We bought this printer as it was reasonably priced, and had the main features we wanted, laser, duplex, manual feed, and relatively fast. What we didn't realise we were buying was a printer that sounds like it's possessed. The first printer (yes we ended up getting a second) would emit a horrible mechanical whine when running multiple pages through the duplex process. We sorted out a replacement through Brother. This one turned out to be even worse! Not only does it still have a high pitched whine, it does it after it finishes printing ANY job, not just duplex.