Our factory uses the latest Precision Glue Machine (Over 500 meter Tunnel Oven). To put it in simple to understand terms; the glue on the speakers is of the upmost importance. If the glue does not hold up, the speaker is done. We use the latest machinery to manufacture these speakers. The SPL of the speaker goes up when you use better glue and a better machine the secure the glue in place. Thick Wadding protects inside the speaker cabinet Wadding is a white chemical silk type of material that we put inside the speaker cabinet for multiple reasons. It helps to make the sound come out more clear, and it also protects all the parts inside the speaker. This material is also fire retardant. This is unique to our speakers. Most other brands do not take this step due to the cost of the material, but it is a game changer!. World class top of the line audiophile grade components! We use ADAU 1701 Digital Sound Processor for audio processing and TPA3116 for amplification. These are both known to be the best in class circuit designs. These components are also amazing and allow us to adjust the sound via soft programming on a computer during the design stage to get the perfect sound. ADI and TI are the names of the makers of these ICs. Most people do not know brands who make circuits, but these are famous in that industry and are known to be the best of the best. Only very high end products use these components. 110 Volt compatible with SMPS technology Normally most items have a transformer. Our SMPS technology switches voltage more efficiently and adheres to all international efficiency standards!. Every Speaker in Production Undergoes a Computer Generated Sound Check Test to Ensure it Upholds to our Specifications and Standards. We use a 6Sigma style Quality Assurance of Each Product (Long story short, each product will work perfectly as advertised for a long long time!). Transducer Production Line to Make the SPL Performance Stable. Inputs / Outputs / Controls: Volum