Top manufacturers!

Don't forget Pass Labs Amp/Pre-amps

ROGUE AUDIO!!!! It doesnt take YEARS to be a top manufacturer.Rogue has been around a very few short years but are producing statement products at real world prices.Their M-120 monos are about as good as you will get for under 5 grand but yet retail for half of that.Their preamp 99 is just plain AWESOME!! For the more budget minded they have a preamp 66 and amp 88 that both slaughter gear that costs twice as much.Their customer service is as good or better than anyone else I have delt with.The head man Mark O'Brien is super cool and very easy to contact.I've seen several other postings about Mark answering the phone at Rogue and returning E-mails quickly. I know from first hand experiance its true.Look into their products,you won't regret it!! (awesome T-shirts too)

Aragon, by far. The best customer service in the business, bar none..

Atma-Sphere, Soundlab, Purist Audio, Thiel, Conrad Johnson, Eminent Technologies. I'm sure there are more but all of the above have always been nothing short of steller when it came to information (honest) and service, not to mention some of the better gear made.

Audio Research, Mark Levinson, and Theta without restriction. Restricted to price points, Magnepan and Grado are very worthy. I agree with the earlier post that Pass is a great product, but don't think the brand has been around long enough for purposes of the present question.