Please check the Photo. AR-3a Acoustic Research Speaker Pair. A legendary masterpiece that changed the world of audio. The ultimate in bass reproduction achieved by the pioneer of the acoustic suspension method. Utilizing the unique Acoustic Suspension (air spring) principle, it achieves rich and tightly controlled bass reproduction despite having a large woofer. With dome midrange and tweeter units, it boasts extremely natural and faithful reproduction across all frequencies, establishing its status as a reference speaker. Acoustic Suspension: A revolutionary method that uses air pressure within the sealed enclosure to enable ultra-low-frequency reproduction down to 20Hz. 3-Way Configuration: Equipped with a 30cm woofer, 3.8cm dome midrange, and 1.9cm dome tweeter. Dome Units: Was one of the first speakers to extensively use dome-type units, achieving wide dispersion and smooth mid-to-high frequencies. Attenuators: Features rear-mounted attenuators to adjust the level of the midrange and high frequencies. Product Description This item was tested and tested before listing, so you can use it with confidence! I will package it carefully to ensure it arrives safely. As this is a used item, there may be some scuffs, rust, scratches, or dirt. Pyament within 3 days. Packages:Box or envelope and Bubble wrup. We provide valid Tracking Numbers for all orders. You won’t pay anything extra after checkout. We can negotiate prices for buyers from countries with low tariffs and VAT. Any other questions will be answered within 48 hours.