I should also say that we use specialized tools that make our jobs easier. The average person probably doesn't own this type of test equipment and software. If interested in VERY good test software at an affordable price try looking at TrueRTA software. It helps finding and resolving issues. http://www.trueaudio.com/

M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM