Has anyone had the amp go out? I turn the key on and have sound for a second then its gone, today I went by the dealer they seem to think its the amp and the cost to replace was out of line.

the amp do go out some time. what year is you GX? there is no warranty?

2005 * no warranty. I have located one for 1/3 the price quoted. should have it repaired in 20 min time

Where can I get a Mark Levinson amplifier for a 2003 GX470? Please help. Thanks.

Try Ebay

Thanks, G man. I tried, but they don't have the same part number like the dealer gave me for my car. I'm not sure how I can compare the two parts to see if they are compatible. Any ideas?

Just go by the year of the car, as far as I know, the ML system in the GX have not change since 03.

The guy who is selling the amp said that it's the same year as my car. May be I just bite the bullet and buy it. It's a heck of a lot cheaper than buying it from Lexus. Do you know where the amp is located, and how difficult it is to replace it yourself? Thank you very much for sharing your knowledge with us.

The factory amp is under the passenger seat, I have never replace one b 4, so I am not sure how hard it is. One thing about Ebay is that you want to check and double check the amp you are buying, since its very hard to return if it doesnt work.

I just want to wrap this up. I bought an amp on Ebay, although it's not identical to what I had originally, but it fits. The amp is under the driver's seat. I just removed three screws to take the amp out. Piece of cake. Thank you for your help.