My system is KEF LS50 + NAD D3020 for desktop computer. Room 13x14.5x8 feet (4x4.5x2.5 m) Subwoofer currently use JBL ES150P but considered SVS SB2000 or ELAC S12EQ. In my country SB2000 (Only have Piano Gloss) has price tag 960$ S12EQ: 675$ I have budget around 1500$ (if need be) but want to use it wisely. Does this upgrade make significant different? or should I consider other Subs? or better to upgrade Amp DAC? I love small to medium size integrate amp because conveniency to use on desk ( 160x80 cm). Thank guys, any recommendations will be welcome.