Amazing how small components are getting and what they can pack into such a small package these days here is a good example of that in an amp'''
http://www.ti.com/product/tpa3136d2?HQS=hpa-null-null-amplifiers-exah-pf-null-wwe&DCM=yes
http://www.ti.com/product/tpa3136d2?HQS=hpa-null-null-amplifiers-exah-pf-null-wwe&DCM=yes