Bose 901 Series VI + Equalizer Set ​The Bose 901 Series VI speakers, introduced in 1968 and discontinued in 2016, are renowned for their unique design and sound reproduction. Each speaker features nine identical 4-inch drivers—one facing forward for direct sound and eight facing rearward to produce reflected sound. This configuration aims to create a spacious and immersive listening experience.​ Wikipedia A critical component of the 901 Series VI system is the Active Equalizer. Designed to be connected between the pre-amplifier output and power amplifier input, the equalizer adjusts the frequency response to compensate for the speakers' unique design, ensuring accurate sound reproduction. Using the 901 speakers without this equalizer can result in suboptimal audio performance Comes with stands To deliver this product properly, it is carefully packed in very strong boxes, thereby wrapped in bubble wrap with lots of padding. We mainly use plastic to fill up the package, if wished differently please contact us. The package is shipped insured to protect both the buyer and seller. For further packing wishes please message after purchase. Photos serve as additional description of product condition / condition of display & LEDs. Please review them carefully before purchase. Orders to islands, or special destinations have a higher shipping cost, for example; Canary Islands