so i had a small issue with my sundown NS-1 i contacted chris at DB-r using his web page, it has a very nice chat log tool that issues you a service number, and then keeps track of everything said and your info and service number, chris responded very quickly, and was very helpful and gave a quote to repair my amp... on a SUNDAY!, then at sunday at 9pm he was still responding to my messeges .. great! monday morning i sent my amp off. he recived it tuesday and he let me know it arived, and told me to give him two weeks ... so i did. three weeks late i emailed him to check the status and he informed me he was just getting on to email me,. and that my issues were bigger then i first thought,. tunrs out i had some mosfets not working, i was thrown back at first because i sent it in for a RCA jack problem, and not a playablity issue...... he understood and explained to me what exactly the new issue was, and also took detailed pictures of my failure areas and sent them to me. after understanding that i needed to have more indepth work done, he then gave me a few options, 1 to fix it correctly and the most expensive way. he also gave me a second option.. to save me money he would repair it with out removing the board ( extra labor) and it would be WAY cheaper but he could not promise there would be no other issues, but that it would prolly be just fine... i opted to repair the amp correctly , he repaired it quickly and shipped it back to me with the quickness,. from when i sent it off to when i have it back in my hands it has been less then a month... and i am very pleased. all and all im glad that DB-r is around, and i will always use them in the future. and i hope you do to.