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Audiosource AMP-5.3A overheats
By JTO from North Carolina on 12/1/2007

Pros:
Clean Sound, Good for headphones only, Makes a good foot warmer
Cons:
Overheats over 50 watts, Weak
Best Uses:
Perfect for a 4x4x4 room
Describe Yourself:
Professional, 50 years of HI-FI
Bottom Line:
No, I would not recommend this to a friend

Not a pleasant experience at all, they overheat and shut down if driven harder than 50 watts continuously. Cooling fan is a mere 3.3 CFM and it needs 30 CFM to keep it cool enough to deliver 150 watts RMS. Shuts down after 10 minutes, then resets and cuts out every 30 seconds thereafter.
Tech support is very diplomatic but offer no solutions except:
"Send them back and buy a pair that better suit your needs"

Customer Service

customernoservice was quick to answer e-mails but offered no practical solutions other than to buy someone elses product.

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MANY