I use a external Dolby Pro-Logic device for headphones that increase the volume while giving me Dolby Pro-Logic Surround sound if it's recorded on the Disc, Radio, DVD player. I take my sound from the audio jack and plug it into my Sennheiser DSP-Pro, I love listening to concerts on this or big HDTV the sound is the same only the picture is different I use Fostex T-40 Studio quality as seen on DVD Beach Boys:Nashville Sounds , first Lorrie Morgan click pause, then zoom in on DVD you'll see words Fostex on the PQ stereo Headphones. DVD or looking at your screen while playing DVD-A, SACD, DVD, CD, or VCR line
(VCR Line is HI-FI sound but no picture to use it it's below channel 2, disconnect yellow composite or S-Vid jack for up to 10 hours using a T200 VHS tape). Unlike the VCR pic sound is Hi-FI, if Dolby recorded you'll hear Dolby Surround.
I live in apartment complex of 114 they all don't like my sounds of Horror in DVD, or Rock and Roll, and I hate getting disturbing the peace fines for our local men in blue uniforms and I use this system to listen as loud as I want even at 3:00AM when I am not sleepy yet, Being crippled I don't exactly do much to get tired SOOOOOOOOOOO