PEARL AUDIO - CANADA
Pearl coolers have been in continuous production for 20 years, during which time Black Pearl has produced over 300,000 units for audio systems worldwide. It is undoubtedly the longest-running and most successful vacuum tube accessory.Black Pearl research began in the early 1950s with the US military and aviation industry. Pearl coolers effectively reduce glass temperature, significantly extending the lifespan of 50-year-old soft-glass enclosed electron tubes. Through extensive research and rigorous engineering, Black Pearl has developed a cooler that extends tube life.