Palakas nang palakas:
TA2024=15W @4 ohms, 2020=20W @ 4ohms, 2021=25W @ 4ohms. TA2021 yung bago and latest offering.
Brands out on ebay are Indeed Hi-fi Labs, Topping, Muse, Lepai, etc.
Peter of Indeed posts sa head-fi.org I asked him kung ano pwede kong gamitin sa Denon SCM51 to give it more dynamics for movies. He recommended his TDA7498E Class D amp (Search item no. 291074063041 on ebay.com). 160W @ 4ohms.
Ang landed cost with taxes I estimate at P8000. Less P2000-ish kung palusutin. While over budget, this amp opens up your choice of speakers.