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I love reading Stephen's thoughts and miss the blog. This is the other side of my lust...love - audio hifi music-makers and all that voodoo (esp. toobs). Thanks for the great coverage!
The EVO power amplifier all feature Active Cascode Topology, which Eichenbaum explained, eliminates global negative feedback by employing only nested local feedback within the individual gain blocks. In addition, the signal path employs both Krell Current Mode and CAST circuitry, which means that when used in a complete EVO system from source to output connected in CAST, the number of voltage gain stages is reduced to one, "the minimum." Huge power supplies, extensive magnetic and electrical shielding, microprocessor control, and internal line conditioning circuitry combine to make the EVO amps so quiet they "approach the theoretical limit of technology," Eichenbaum opined. The EVO amplifiers are: EVO 402, stereo 400Wpc ($15,000); EVO 403 , three-channel 400Wpc ($20,000); EVO 600, 600W monoblock ($15,000); and EVO 900, 900W monoblock ($20,000).
EVO preamplifiers feature 1.5 MHz open loop bandwidth in a zero feedback, balanced circuit incorporating Current Mode and CAST. The EVO pres don't need no negative feedback—Krell says open-loop distortion is typically less than 0.005% (50 parts per million). The volume control is a trick 16-bit balanced resistor ladder. The preamplifiers' power supplies are housed in separate chassis and use electrical and magnetic shielding to prevent interference with preamplifier circuits. The two chassis EVO222 is $10,000; the four chassis dual mono EVO 202 is $15,000.
Karen and http://www.bizjournals.com/cincinnati/prnewswire/press_releases/national/California/2008/07/14/NYM105s hosted a cocktail reception for the Humpty Dumpty Institute's 'U.N. Across America' program. Eight distinguished U.N. Representatives came to Los Angeles to meet with leading business and civic leaders and to have a chance to discuss a variety of global issues with citizens of Los Angeles," said Ralph L. Cwerman, President of the Humpty Dumpty Institute.