just bought one of this model (Sub-10) from an exclusive distributor in germany (i live in italy) it was really a bargain because it cost half the listed price,but after one week of normal use it wont work anymore. luckily and with many, many patience and pleading to deal with, i had it replaced (the amplifier only, because freight cost more if i return the entire sub woofer). i just dont know what's the problem with the amp. it wont turn on again and no lights or sounds. when i opened the amplifier, there's are no sign or traces of fried or busted parts. Now back to your question if its really worth it? Yes it is because you wont expect the sound quality from this product in respect with its price bracket with other brands.