04-29-2013, 02:57 PM
Based On what You Wrote Its Difficult To Say That It Is Simply The Headphones That Give You Results. It Appears That There Are Other Factors At Play Outside Of Speakers Vs. Headphones. You Also Indicated A Ultrasonic Vs. Masked Factor. You Also Indicate A Listening While Awake Vs. Asleep Factor. You Also Indicated That A Change Of Speakers Was A Factor. So, I CouldNt Tell Which Factor Was More At Play Based On What You Wrote. I Think You Have To Experiment With Utilizing Different Factors In Order To Determine Which Is Really At Play And Which Combination Works Best. Sorry. For Some Reason It CapitalizesThe First Letter Of Each Word I Type.