I bought the EarthQuaker Devices The Warden compressor used from online. I was so excited when it arrived.....until when I plugged in and started playing, the first note I would play would distort. After that, it wouldn't. But each time I turned the Ratio knob, it would distort the first note. Of course, the louder I would pluck or turn up the volume, it would distort every note I would play. Here are the various combinations I did to make sure it wasn't just me or the bass: - played on my active 5 string Ibanez BTB845V (new battery) - played on my active MM Stingray 4 string (semi-new battery) - played on my passive Squier CV60 precision bass - I plugged it into my power supply along with other pedals - I plugged it in with an individual 9V power supply - compared it with my TC Electronic Spectracomp, Boss CS-2, Boss LMB-3.....no problems with either of them even when I pluck hard on fretted low notes on the E string Same thing happened to me when I bought a used MXR M282 Dyna Comp Bass. I was able to return that through the app so I'm able to do the same with The Warden. The Warden has an internal thing so it makes the 9V into 18V so it should have plenty of headroom. But since this is the second time this happened since the MXR M282, I'm just wondering if I'm missing something or not using it right.