For your consideration, one of the best sounding electrostatic speakers ever made. These are the Acoustat Spectra 3300 series speakers. Which means they are have a much wider "sweet-spot" than my older Acoustat 4B's. They also come with the ancillary sub woofer. The combination helps to increase the volume of the electrostatic panels by not having them reproduce bass notes. That's what the sub woofer is for...to round out the bass response. Offering them for the minimum price such great sounding speakers demand. They compare to Martin Logan, KLH, Quad (though these play a lot louder than the Quads). Note: Just to be clear, these are esoteric speakers, not PA speakers for your outdoor pool parties. So they're intended for critical listening, not slamming Bass and Drum. They also appreciate high-quality associated audio equipment. Best offer.