My 950 (the one that replaced my original "drop-out" unit that I got in early April) is very close to that number -- I think it's in the 280's. From what I understand, the hiss problem is spotty and may either not be present or not be detectable in all units. I haven't noticed any abnormal hiss from mine, for example. I'd say that you got one of the quiet ones. Kick back and enjoy!

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gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review