“Small” is not the only story here. Making a small amplifier is great, of course... but not if power and sound quality are sacrificed.
When the HD amplifiers were introduced in 2008, they wowed the industry with their amazing technological content and impressive power density. Subsequent and continued success in the marketplace is testament to the excellence of their design. They remain unmatched in offering compact packaging, along with the flexibility and stability of JL's Regulated, Intelligent Power Supply (R.I.P.S.) technologies.
JL Audio's engineering team focused on achieving world-class fidelity first, and then on making their HD amplifiers amazingly powerful, efficient and small. These efforts led to a remarkable switching amplifier technology called Single Cycle Control™, which allowed all of these goals to be achieved.
This exclusive core amplifier technology is mated to JL's regulated, intelligent power supply (R.I.P.S.), advanced thermal management systems and a full complement of studio-grade processing features. Behind every HD's removable security cover, you will find studio-grade signal processing with fully variable crossover filters. Also included are JL Audio's noise-killing, highly flexible differential-balanced inputs with remote level control capabilities via the HD-RLC remote level control (optional).