I have a DBX for my TEAC four channel tape deck, but NO WAY will it reproduce a 135dB sound of a .357 revolver at 6 feet. With the BEST BASF fomula tape and the DBX unit on max, at 15 IPS I have a 91dB sonic range. I remeber DBX'ed LP's and the more popular "compressed" LP's with a "expander" box. This was just about to become an RIAA standard when the Denon CD was invented. I have a "Sounds of Power" CD, that has .357 magnums, .44 magnums, 30-06's, the 16" rifles on the Missouri with full power rounds, as well as racing engines, piston engine areo engines (the Allison, the Merlin, the Griffon, and the Napier Sabre) as well as jet engines. As with any of this type of recording, there is a pilot tone at the beginning. My speakers will reproduce the sound of the 16" rifles of the Missouri at full 156dB volume, if I want to damage my hearing, and scare the neighbors. I have about 25 of my late brother-in-law's sound effects LP's. One has a .38 Special revolver at 50 YARDS,86dB. That's a far cry from the dynamic range of a Denon spec CD. I totally agree that many, many CD's are compressed to be louder, just like 45's were before their demise. I prefer to "rip" to audio cassettes to use in my truck, and I archive my 78's mostly to Hi-Fi VHS, after "half-speed mastering" them to 1/4" R-T-R. The shellac 78's are beginning to rapidly deteriorate, even in the Library of Congress' "vaults". The ethanol has been slowly evaporating from the shellac for 60+ years. You take a 110 year-old shellac record, even the 1/4" thick ones and they are more brittle than glass. No one will bother making CD's of Eddie Foy and the Seven Little Foy's, and Eddie Cantor, I've only found 5 CD's of his THOUSANDS of recordings. In 1930-32, Eddie Cantor sold more records than the Beatles did in 1965! Now only nuts like me still listen to him. I have, therefore I "rip".