Is your kick in stereo and collapsing during the mono conversion? I don’t worry about samplerates when uploading samples and haven’t noticed anything bad.
Well you probably just recorded the audio input and bounced it? In that case you are missing all the processing and compression necessary to make software instruments sound big and fat. Most single track audio files sound very thin, probably lacking in amplitude when bounced unprocessed.
It would actually help if you told exactly what’s the sound is like, Is it too thin, too low, distorted or the EQ is off? Maybe give it a few turns on the Overdrive knob to give it some juice?
elektron also make sure that on the track you loaded the sample there is no overdrive applied or filter or anything like this! it was my problem the first time i uploade samples to the AR maybe a dumb advice bit for me it was the problem!