Will loss of power risk data corruption?

  • Hey, guys.


    Brand new owner of a powered head. First, allow me to state the terribly obvious - wow. I've been fooling with digital amps since the early Line 6 days but could never warm up to one. An hour after plugging in I listed every amp I own for sale on Craigslist. I sling code for a living, so a most deferential tip of the hat to my German counterparts. Very nicely done, both the amp and the Windows Rig Exchange software.


    Regarding my question, I know that anything even remotely digital should be on a UPS (battery backup), and one's on the way. That said, if for whatever reason the Kemper loses power without being properly shut down, is there a risk of data corruption, e.g. like yanking a USB drive from a computer without ejecting it?


    Just making sure I know all the risk factors so I can practice safe guitaring.


    Any thoughts would be most appreciated.


    Thanks!


    Chris

    Kemper remote -> Powered toaster -> Yamaha DXR-10

  • The PROFILER is designed for musicians - and there always can be a power outage.


    We designed it to handle such situations, but indeed I recommend to power it off with the chickenhead setting to "Off".

    I can assure you, since I wrote the shutdown procedure, that it is the better way, though the PROFILER does take countermeasures to prevent data loss. Also, the outputs are muted to prevent a popp noise.


    If you just pull the power cord, the likelihood rises that the next bootup might take longer (sorry for tech speak ahead) since it might trigger a recovery procedure then to rollback the last probably incomplete transactions.

  • Hey, Timo.


    Actually, I appreciate the geek speak (I sling MS code for a living). My default had been to do a controlled shutdown with the chickenhead as I just assumed there was stuff happening in the shutdown process, so I'll slap a UPS on this puppy and continue to use the knob for power up / down.


    That said, with the power amp connected to my Marshall 4x12 and master out on about -18, I consistently experience a couple of moderate clicks / pops when doing a normal shutdown. It doesn't sound speaker threatening, and it's not like my tube amps don't behave this way, but I thought I'd ask - is that normal behavior?


    Thanks for filling me in on this stuff. And if I ever happen to be on your side of the pond maybe I can buy your devs a beer or two - very nicely done, man.

    Kemper remote -> Powered toaster -> Yamaha DXR-10

  • We had a discussion on UPS ( another thread) and I think the general consensus was that unless you are in a high profile/pro environment, its no more needed than for a regular valve amp...


    ...and welcome :)

  • A UPS is rarely a mistake, but in the last 3 years some unintentional power off situations have happened to me. There was never a data loss.

    The only thing that sometimes occurs is really just a longer restart phase.


    I also had an accidental disconnection in the supply line, which I immediately repaired. The Kemper continued unimpressed. There could also be a certain buffering, because with the desk light I saw that the voltage was really short gone.


    Welcome !