The EAS Eastar EAS-750R is a passive speaker crossover network mounted on a blue printed circuit board. The assembly features a large red inductor, two high-voltage capacitors (labeled 400V), and three high-power cement resistors (labeled 30W). It also includes a PTC component and clearly marked terminals for input ("+ IN -") and tweeter ("+ T -") connections. The board is labeled with the model number "EAS-750R", the brand "EAS EASTAR", and the text "Design In Japan"