…just received my new MOD Duo, and i’m doing initial testing…
one thing i’ve noticed is that there is a disappointing amount of background noise. i suppose it’s possible that i’m expecting a cleaner signal than is reasonable for such a device, but just wanted to check, in case my unit has a fault that should be addressed…
the nature of the noise is not ground hum – it’s not 60Hz or multiples, and it occurs whether anything is connected or not. also, there is a cyclic component to it – looks like at least some of it is processing noise.
i’ve made a soundfile, so you can see how the level relates to a normal, healthy signal level. the noise is fairly low, but is disturbing because it is still clearly audible at reasonable listening levels for a full-level signal.
at the beginning of the file, my clarinet with pickup is plugged in but i’m not playing.
then there are a couple of bits of playing, with the input level to the MOD adjusted appropriately on my pickup. then, a few seconds after the last playing (at about 52.5 seconds in the soundfile), i unplug my pickup (you can see the spike there). you can then see that the noise after that point is virtually the same as before, so it’s not related to the input device but is produced by the MOD alone. the steady-state noise is at about -62dB, while the cyclic peaks are at about -52dB. …but it’s much more noticeable than those numbers might suggest, because it’s not just broadband noise. also, if you listen more carefully, you can hear some white(ish) noise which comes in and out from time to time.
this is all with no plugins – just a straight connection from input to output, and no level adjustments anywhere in the MOD.
please let me know if this is considered “normal”. if it is, i’d suggest there’s some work to be done, because it makes the device of questionable usefulness in my applications.