The Fosi V3 is an integrated amplifier as well. It integrated preamp and power amp. To use it as a power amp only, you would disable the attenuation buy setting it to full volume. The same is true for the Yamaha receiver (which is a preamp, radio receiver and power amp in one) from above (or the Yamaha A-S201, which is preamp and power amp and phono preamp).for those using it purely as a power amp it is a very good value and excellent value at the current 20% discount price. Yamaha competes well in entry level integrated amps but not in power amps.
But yes, if that is all you need and will ever need, the V3 is the better value.