New circuitry and casework for the 003 equalizers create the perfect mate for the 003 cartridges. Echoing the industrial design of the Grand Master eq, the 003 eq’s sculptural design truly reflects the 3rd generation from DS Audio. Discrete circuitry with critical signal paths wired point-to-point assures that the 3rd generation 003 optical cartridge generator performs to its optimal level. Compared to the DS002 equalizer, the thickness of the circuit board has been increased from 1.6 mm to 2.0 mm for greater vibration control. On these new circuit boards, the thickness of the copper foil has been increased from 35 μ to 70 μ for greater conductivity. New film capacitors populate this improved board. The DS003 equalizer allows you to select four different roll-off curves for the low-frequency range, allowing you to optimize the bass to best match your system and listening room.