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  1. questionWhy JRDG highly regulated switching power supplies are extremely quiet?
    Jeff Rowland believes that absolutely quiet power supplies are crucial to refined music reproduction. More than ever, this is true of the switch mode power supplies that Rowland employs in his award winning products. This is why switch mode power supplies in JRDG products operate at extremely hi ...
  2. questionWhy JRDG employs highly regulated switching power supplies in its statement level products?
    Jeff Rowland is committed to the musical superiority of his reference products. This is the reason why high speed, fully regulated switch mode power supplies are found inside all JRDG reference level amplifiers and preamplifiers. A truly advanced, no compromise, and low noise switch mode power s ...
  3. questionArenít switching power supplies inherently noisy?
    Like all other technologies, not all switch mode power supplies are born alike. All highly regulated and very high speed switch mode power supplies used by Jeff Rowland in his amplifiers and preamplifiers are extremely quiet. Very high switching frequency of up to 1Mhz, multiple regulation techn ...
  4. questionWhy has JRDG adopted high speed and highly regulated switch mode power supplies, and has abandoned classic toroidal and linear power supplies instead?
    Jeff Rowland is proudly committed to creating green products. Employing cool running, super efficient, and incredibly quiet switch mode power supplies is part of Roland’s innovative green product strategy. Jeff Rowland is one of the very 1st designers in the high end audio industry to feat ...