A few weeks ago I posted regarding a problem I was having with my new Manley Chinook. The problem involved a loud BOOM sound whenever playing vinyl. I took lots of steps to sort out the problem, but these are the steps that isolated the problem to the Chinook: - Tried my set up with an inexpensive phono stage. No BOOM - Took my table to a HiFi shop and hooked it up to an expensive rig. No BOOM - Hooked up my table and Chinook to another system. BOOM I sent it out to Manley three times for repair. Twice they repaired it, and the last time they sent me a new unit. Just got a brand new Chinook and the problem persists. I’ve attached a link to a short YouTube video if you’re interested in hearing it. You’ll hear it as soon as the video starts, and at 3, 17, and 31 seconds. Can anyone think of anything else that could be causing this problem? I'd love to keep the Chinook, but I can't have it if it's booming. The Manley people are baffled because they can't figure it out and can't reproduce it at Manley. As an aside, I have a loaner JC3+ and it's working perfectly.