I haven't heard them but it seems like a good price for DefTech bookshelves. $250 off w/ promo code EMCNGHN32 with free shipping, ends 3/21. Link Driver Units 1 - 5.5" bass/mid driver 1 - 1" dome tweeter 1 - 8" bass radiator Power Rating Recommended Associated Amplifier Power: 20 – 200 watts Frequency Response 26 Hz – 30 kHz Nominal Impedance 8 Ohms Sensitivity 90 dB