Quote:Originally Posted by goneten
So I've been thinking about trying to get involved in bias-controlled testing. but I keep thinking that my results won't be of value if I don't have a switching mechanism to change between components (ie comparing CDP or amplifiers).
Is there a cost effective switch box that I could buy that could do the job? Once I've acquired such a box, how exactly would I go about matching SPL levels? If I compare two integrated amps, how do you store the settings for each particular amp? Unlike an AVR there are no trim setting controls available, so I'm not entirely sure how this works. I don't have a volt meter currently and I know my SPL meter probably would be inadequate for the task. Are there specific models you would recommend that offer accurate enough results to below 0.1 dB?
I have one of the QSC ABX comparators, which I've used for testing amplifiers. I even wrote a listening test software program that controls the ABX comparator (via RS-232) and collects all the listeners' data.
Too bad these are no longer available. I guess when it comes to high-end audio there is no money in discovering the truth