Duration: 7:53

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My opinion: this amp produces standard sound quality, and the volume is not big. bass output is mediocre, need bass booster (enhancer) to increase bass level. for testing, I use 6.5 inch Subwoofer speaker with sealed box and 2 inch satellite speaker.
I buy this mini board for less than US $8 on Aliexpress. this amplifier kit has volume control, and bass control. the board is good built quality and mini size. on the amplifier board, we can find YD1517P (class-B amp IC) for a stereo amplifier, CS8623 chip for bass amplifier, and SMD JRC4558D for the bass filter.
IC YD1517P is equal with TDA1517P & UTC1517P.

pros
tiny 2.1 amp with price under USD $8 on Aliexpress.
can be powered with 3s Li-Ion 18650 battery.

cons
bass output is mediocre, need bass booster (enhancer) to increase bass level.
little pop noise on the speaker when the power is ON.
sound volume is not big, only suitable for small rooms.

conclusion: this amp may be good for most casual audio user & who don't like heavy bass, I think it's not for the serious HiFi audio enthusiast, also not for the heavy bass user, IE: game and movie fans. this mini amplifier may useful for DIY mini portable 2.1 speaker audio system, and not recommended for DIY TV Sound Bar, DIY 2.1 computer speakers, & DIY 2.1 multimedia speaker system.

in video above is using audio from: Jarico - Island (Magic Free Release)
Track: Jarico - Island
Music Provided by Magic Records
Listen To The Original: https://youtu.be/OaBMT1oF1SE
Free Download: https://fanlink.to/g3JJ
Usage Policy: http://www.magicmusicLLC.com