Luxman B-1000f

Fifteen years in development; The Luxman Board approved completion of the B-1000 in 2003  two years before Luxman's 80'th Anniversay in 2005. The B-1000f flagship monoblocks are a showcase of what Luxman have achieved over the past eighty years. Equipped with ODNF version 2.3; less noise, more music. Truly state of the art in High End Audio. Why settle for less than the best !

With continuous output power of 2,000 watts into 1Ω - will easily drive the most difficult speaker loads.

Luxman will begin exporting these amplifers for the first time outside of Japan during Q3 2007.

Here is a list of the Awards the B-1000f won in Japan; among the highest awarded:

• Sound                                        Gold Prize (2005)
• Stereo Sound                             Grand Prix   (2005)
• MJ                                             Technology  (2005)
• Music Friend                               Power Amplifier Section  (2005)
• Radio Technique                         Silver Prize   (2005)
• Audio Phile                                 Audio Excellence - Gold (2006) 

Luxman's patented ODNF circuitry has redefined the relationship between music signals and noise and does not use phase compensation or NFB loops in the music signal path, instead it accurately isolates distortion components to cancel them.  

Luxman holds many patents for audio engineering, amongst them is the application of  Global Negative Feedback to the output stage (1955), which while widely used throughout the audio industry, they no longer use themselves.
 
Luxman nowadays use a distortion reduction circuit called Only Distortion Negative Feedback (ODNF). This system works by isolating noise & distortion at the output from the music signal and sparingly applying negative feedback to suppress them. Conventional negative feedback systems can have an adverse effect on the music, introducing phase distortion. "The circuit features such an ultra-wide range, ultra- high slew rate and ultra low distortion that it does not use phase compensation for the music signal amplifying circuits." This new technology also ensures that need for a DC servo circuit is alleviated, again improving sound quality.

Chassis bases have superb vibration absorption in order to supress noise levels. The power transformer, electrolytic capacitors and amplifer output stage (see amp block above) are laid out so as not to interefere with each other. To reduce intereference further, the block construction isolates each section using shielding panels, and extensive internal filtering to reject magnetic flux interference. 

The EI transformer, which was designed by Luxman, is wound with the 2mm thick flat OFC copper wire weighs 55 lbs ! The flat copper cable is insulated with paper, as it does not all static electricity to build up. The flat cable has superior stacking cpapbility over round cable. Each transformer is wound by hand and the cable is so massive and rigid that it needs to be hammered into its exact location. The output leads from the transformer are bolted directly to the solid copper Bus Bar to allow the music the shortest possible signal path, unimpeded by connectors or anything that could degrade the music even slightly.