Master Class Audio Samples Library

Welcome to the Master Class Audio Samples Library. Press "Play" to start the playback of a certain audio track. Use the "Toogle" button to switch between the original and the Master Class version of the audio track. Press "Stop" to stop the audio playback and return to the beginning of the track. Some of the files are adjusted in a more subtle way, on others you'll instantly hear significant improvements. Note: To get the very best results, original music files should be tuned with Master Class Software on your own audio system. The source of the Master Class audio demo files on this web site are standard iTunes downloads and were made using the the Daniel Hertz M9 amplifier and M10 Bookshelf Speakers. If you wish, you can tune these and other recordings with your own system and share your presets with the Daniel Hertz Master Class community. Listen and Enjoy!

     

Artist: Coleman Hawkins Track: Bird of Prey Blues Album: The High And Mighty HawkGenre: Jazz

Playback: stopped

Download: M10 Master Class Preset File

Artist: Janos Starker Track: Suite No.3, BWV 1009, Allemande Album: Bach; Six Suites; SonatasGenre: Classic

Playback: stopped

Download: M10 Master Class Preset File

Artist: The Modern Jazz Quartet Track: Bag's Groove (feat. Sonny Rollins) Album: The MJQ At Music InnGenre: Jazz

Playback: stopped

Download: M8 Master Class Preset File

Artist: Livingston Taylor Track: Isn't She Lovely Album: InkGenre: Pop

Playback: stopped

Download: M10 Master Class Preset File

Artist: Miles Davis Track: Flamenco Sketches Album: Kind Of BlueGenre: Jazz

Playback: stopped

Download: M10 Master Class Preset File

Artist: Jane Monheit Track: Honeysuckle Rose Album: Taking A Chance On LoveGenre: Jazz

Playback: stopped

Download: M8 Master Class Preset File
     

Artist: Faye Wong Track: Sky (unplugged) Album: Sky Genre: C-Pop

Playback: stopped

Download: M10 Master Class Preset File

Artist: Shirley Horn Track: The Men You Were Album: Loving YouGenre: Jazz

Playback: stopped

Download: M8 Master Class Preset File

Artist: Lulu Rouge Track: Bless You feat. Mikael Simpson Album: Bless YouGenre: Electronic

Playback: stopped

Download: M10 Master Class Preset File

 

Some notes about level matching: It is well known that in audio comparisons, people tend to prefer the louder of two tracks. However, in a comparison such as the Master Class demo clips, it is important to keep the levels of the original and processed versions the same in the areas which have not been changed.

In most cases, the Master Class versions are louder than the original versions. This is because in most of the samples, Master Class restores information that was lost. For example, listen to "The High and Mighty Hawk" (Coleman Hawkins). In the original recording, Ray Brown's acoustic bass is barely audible, Mickey Sheen's drums are very soft and there is little body to Hawkin's tenor sax. In addition, the cymbals are muffled and the piano sounds closed. In the Master Class version, the bass is full and punchy, the drums are natural and the tenor sax sound is full bodied. The cymbals are clear and the piano is open. So it is normal that the Master Class version sounds louder. The mid range of the tenor is the same volume in the original and Master Class versions. If the volume is adjusted so the two versions are at subjectively the same level, then the sound that includes the mid range of the tenor sax has to be artificially depressed. This masks the improvements that have been made.

In Master Class versions where only A+ is used, the volume level will be identical. In Master Class versions in which EQ is limited to a few tenths of a dB, level matching issues are less of an issue. With recordings that need more EQ, this issue is more apparent. The demo clips have been optimized to show only the improvements that have been made, leaving the rest of the recordings at exactly the same level.