Sorry, this long and detailed... I was looking for a small powered monitor for the not-ear-splittingly-loud gigs I play, mostly in restaurants. The Seismic Audio FL-10MP PW looked perfect: small, not too expensive, good layout and controls, 99.9% positive feedback on eBay. I ordered one on December 31 and got it on the 2nd. Not bad. It looked well made: solid, nice feel to the controls. Since it has a 3.5MM input, I hooked up my phone and played some music, and it sounded quite good. Then I plugged in my bass via my Zoom B3 and I immediately heard a rattling/buzzing sound on lower notes that sounded like the driver was bottoming out. Crap. To make it go away I had to lower the volume too much for it to be useful, even for our not-terribly-loud gigs. So I fired off an email to Seismic's Customer Service explaining the situation and asking if it was likely that I had a defective unit or if this model is just not up to the task of being a bass monitor. The next day I got an automated reply telling me to call the Tech Support. That was disappointing because if I wanted to deal with a phone call, I'd have called in the first place. I don't have good cell coverage at home so I called from the office. No answer, didn't leave a message. Next time I called I talked to a tech and explained the situation. He asked which input level setting I was using, and not being next to the unit, I couldn't answer. I didn't think the unit had an input level setting, and when I got home, I confirmed that. Next day I called back and got a different tech. Explained everything again and he suggested that the problem could be hum caused by other electronics on the same circuit. I told him it wasn't hum--it wasn't constant and only happened for lower notes. He also suggested I try a different instrument cable. I told him I'd try different circuits/cords and offered to email him a recording so he could hear it. He gave me his email address. Of course, different circuits/cords didn't help. I made a recording and sent it to him. The buzzing/rattling is surprisingly hard to capture, but I managed. Next day, no response, so I sent him another message saying "hey, what do you think?" Nothing. Next I said "OK, how about I send the unit back and you check it out. If it's defective, you send a replacement. If it's OK, you send a refund." No response. At this point I've been trying for a full week to get them to take this thing back. Another phone call--by the way, every call/email was initiated by me, except the first autoresponse--and said "OK, I need to return this unit." Guy gave me an RMA and said Fedex would send a label. Next day, still no label. I call back and a different guy says "Oh, thanks for reminding me...I'm the person who requests the labels". Next day, no label. I call again. Yet another guy says "The label was emailed to you, check your spam folder." I did: no label. So I give him another address--GMail, this time. Next day, no label. I call. "Fedex sent the label." At this point, I start to lose my patience and explain to the dude that I've been trying for two weeks to return this thing, been through a week of just trying to get a label, and if they can't send me one, I'll ship it back myself. I tell him I'll wait till that night for a label from FedEx. That night, I get a label from FedEx. All throughout the process, everyone I've talked to has been polite and helpful--said pretty much "the right things"--so I don't know whether they're intentionally stalling or just dysfunctional. It's entirely possible that really think their customer service is not horrible, but if that's the case, they're wrong. Now I've got to drop the package at FedEx and wait for them to decide whether or not I owe them shipping charges (if they deem the unit OK). I'll report back. But you've been warned.