this brand sounds familiar. if im not mistaken an installer in subang offered me this sub when i installed my agako monoblock with him... the bugger even offered me a 15" for my kelisa!!

anyway...according to him RDS is from the same makers of agako and prokick. so i guess it aint a copy of a/d/s. meaning theyre a local brand...local but good.

my guess is this should be the same brand sub used (paired with the Agako EG-3000D monoblock) that helped them win SPL competitions.

if RDS is from the same makers as agako and prokick and if ur willing to give it a try...i say go ahead as agako and prokick maybe local...but theyre certainly badass