Uploaded September 2025 | Updated September 2026, 1 week ago
#diy #boombox #ampdyno
Two Mini Amps Tested and Reviewed - ZK-MT21 $15 and ZK-HT21 $35 from Amazon
SHOP
ZK-MT21 2.1 Amp "50x2 Plus 100W" - amzn.to/45SeVEJ
ZK-HT21 2.1 Amp "160x2 Plus 220W" - amzn.to/3JSgYju
ZK-1001u on Amazon: amzn.to/4mXYwUS
ZK-1002t on Amazon: amzn.to/419LhrN
Sound Activated LED Spectrum Display: amzn.to/4mIYnEC
Waterproof Cases for DIY boombox: amzn.to/45oopHx
Elac Unifi Bookshelf Speakers: amzn.to/41gXon2
CHAPTERS
0:00 Intro
1:00 Unboxing ZK-MT21
1:24 Specs and Features MT21
2:24 Sound Demo MT21
3:38 Amp Dyno Tests MT21
5:46 Unboxing ZK-HT21
7:10 Specs and Features HT21
9:27 Sound Demo HT21
11:10 Amp Dyno Tests HT21
13:00 PROS and CONS
13:55 EXTRAS
VIDEO LINKS
Toolbox Boombox Subwoofer: youtu.be/WKYce_NuiSM
ZK-1002t Stereo Mini Amp: youtu.be/JStGprfoOqY
ZK-1001u Mono Mini Amp: youtu.be/G8nYbd8H194
Chinese Mini Amp Playlist 1: youtube.com/playlist?list=PLC9341FA0AF3BD899
Chinese Mini Amp Playlist 2: youtube.com/playlist?list=PLu98-M_EowHNWvzhB2lT0ZqOjCBFTJVuu
Toolbox Boombox Playlist: youtube.com/playlist?list=PL07AD0DE91419CEAA
Built Not Bought YouTube Channel: @Builtnotboughtboomboxes
builtnotboughtboomboxes.com
Facebook Group: facebook.com/groups/1037308295061886
SHOP Affiliates:
Down4Sound - Shop4Bass.com
SAVARD Speakers: Shop4Boom.com (use WAL7 for 7% off)
WCCarAudio - https://is.gd/wccwal
Amazon - amzn.to/3wNX6Fn
Crutchfield - howl.me/cjZI33auToW
Get your WAL/OSS Merch: bigdwiz.creator-spring.com
Buy Me a Coffee/Tea/Slap-a-D-No : oldschoolstereo.com/p/donate.html
➡️ Support OSS / Williston Audio Labs for early access to videos: patreon.com/OldSchoolStereo
One Time "Tip" for Video Support: paypal.me/BigDWiz
VIDEO AND AUDIO GEAR
Camera - iPhone 16pro 1TB - amzn.to/3Vh350B
RODE Wireless Go II Microphones: amzn.to/3Q6NVHl
Shure MV7 Microphone: amzn.to/3A4OICK
Zoom H4n Audio Recorder: amzn.to/3BXjVsS
960 LED Panel: amzn.to/2Sxoq3S
TEST BENCH EQUIPMENT
SMD / D'Amore Engineering Amp Dyno (AD-1): https://is.gd/wccad1
XS Power D1400 Batteries - amzn.to/2BPFCKW
XS Power PSC60 Charger - amzn.to/2CHGcfs
Fluke 1000A AC/DC Clamp Meter: amzn.to/2Rw5WDA
Handheld Dyno AMM-1: https://is.gd/wccamm1
My Favorite Precision Screwdriver Kit: amzn.to/3yAaPmn
DISCLAIMER: This video and description contains affiliate links, which means that if you purchase from one of the product links, I may receive a small commission. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, I may be compensated if you make a purchase
#diy #boombox #ampdyno
Two Mini Amps Tested and Reviewed - ZK-MT21 $15 and ZK-HT21 $35 from Amazon
SHOP
ZK-MT21 2.1 Amp "50x2 Plus 100W" - amzn.to/45SeVEJ
ZK-HT21 2.1 Amp "160x2 Plus 220W" - amzn.to/3JSgYju
ZK-1001u on Amazon: amzn.to/4mXYwUS
ZK-1002t on Amazon: amzn.to/419LhrN
Sound Activated LED Spectrum Display: amzn.to/4mIYnEC
Waterproof Cases for DIY boombox: amzn.to/45oopHx
Elac Unifi Bookshelf Speakers: amzn.to/41gXon2
CHAPTERS
0:00 Intro
1:00 Unboxing ZK-MT21
1:24 Specs and Features MT21
2:24 Sound Demo MT21
3:38 Amp Dyno Tests MT21
5:46 Unboxing ZK-HT21
7:10 Specs and Features HT21
9:27 Sound Demo HT21
11:10 Amp Dyno Tests HT21
13:00 PROS and CONS
13:55 EXTRAS
VIDEO LINKS
Toolbox Boombox Subwoofer: youtu.be/WKYce_NuiSM
ZK-1002t Stereo Mini Amp: youtu.be/JStGprfoOqY
ZK-1001u Mono Mini Amp: youtu.be/G8nYbd8H194
Chinese Mini Amp Playlist 1: youtube.com/playlist?list=PLC9341FA0AF3BD899
Chinese Mini Amp Playlist 2: youtube.com/playlist?list=PLu98-M_EowHNWvzhB2lT0ZqOjCBFTJVuu
Toolbox Boombox Playlist: youtube.com/playlist?list=PL07AD0DE91419CEAA
Built Not Bought YouTube Channel: @Builtnotboughtboomboxes
builtnotboughtboomboxes.com
Facebook Group: facebook.com/groups/1037308295061886
SHOP Affiliates:
Down4Sound - Shop4Bass.com
SAVARD Speakers: Shop4Boom.com (use WAL7 for 7% off)
WCCarAudio - https://is.gd/wccwal
Amazon - amzn.to/3wNX6Fn
Crutchfield - howl.me/cjZI33auToW
Get your WAL/OSS Merch: bigdwiz.creator-spring.com
Buy Me a Coffee/Tea/Slap-a-D-No : oldschoolstereo.com/p/donate.html
➡️ Support OSS / Williston Audio Labs for early access to videos: patreon.com/OldSchoolStereo
One Time "Tip" for Video Support: paypal.me/BigDWiz
VIDEO AND AUDIO GEAR
Camera - iPhone 16pro 1TB - amzn.to/3Vh350B
RODE Wireless Go II Microphones: amzn.to/3Q6NVHl
Shure MV7 Microphone: amzn.to/3A4OICK
Zoom H4n Audio Recorder: amzn.to/3BXjVsS
960 LED Panel: amzn.to/2Sxoq3S
TEST BENCH EQUIPMENT
SMD / D'Amore Engineering Amp Dyno (AD-1): https://is.gd/wccad1
XS Power D1400 Batteries - amzn.to/2BPFCKW
XS Power PSC60 Charger - amzn.to/2CHGcfs
Fluke 1000A AC/DC Clamp Meter: amzn.to/2Rw5WDA
Handheld Dyno AMM-1: https://is.gd/wccamm1
My Favorite Precision Screwdriver Kit: amzn.to/3yAaPmn
DISCLAIMER: This video and description contains affiliate links, which means that if you purchase from one of the product links, I may receive a small commission. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, I may be compensated if you make a purchase
