No Hi-Fi system is complete with an amplifier, either integrated where pre-amplifier and power amplifier are combined in one box, as opposed to separating the two.
Music System - Just Add Speakers. 50 Watts P/C Power Amplifier. Passive EQ Phono Stage. 24/192 USB DAC.
Teac UD-505 flagship USB DAC with integrated headphone amp supports hi-res DSD512, and MQA audio as well as Tidal, Qobuz and Roon streaming services.
Teac AI-503 is an integrated amp with Bluetooth function and Dual mono USB DAC that supports inputs up to 11.2MHz DSD and 384kHz/32-bit PCM.