I recently switched out the power cord I was using on the TRL/Sony 900V (3rd generation mod by my estimates) and was also startled by the change it brought. Many of the increases in performance Paul has mentioned that will come with his next mod to my unit (DC, just can't beat it!), manifested with the power cord switch. I've known for some time the critical nature of power cords and your power "system" in general, but the dramatic nature of this increase in audio dynamics and quality was unique and very pleasing :-)
