


Have you noticed the "500 WATT" mini amps on eBay? In most cases, these mini amps are under $20 US shipped. So, how can they make such a small amp so inexpensive and so powerful? Well, first of all, don't always believe output power specs unless more details are provided. For example, the Kint... More
Have you noticed the "500 WATT" mini amps on eBay? In most cases, these mini amps are under $20 US shipped. So, how can they make such a small amp so inexpensive and so powerful? Well, first of all, don't always believe output power specs unless more details are provided.
For example, the Kinter MA-150 has a big, silk-screened "500 Watts" on the heatsink. One might think since someone took the time to put such a rating on an amp, there would be some truth to it, right? Well, not necessarily...The MA-150 doesn't mention any RMS wattage output rating, so one is to assume the 500 watts.
Well, my friends, don't fool yourself! This $15 amp is NO 500 Watt amp. In fact, the most power I could squeeze out of it (with distortion galore) was about 30 watts. This was 30 Watts combining BOTH channels!
Watch the video to see the full measurements. I used my SMD DD-1 and Velleman HPS50 to measure everything from unloaded Voltage output to resistive loads from 8 ohms down to 2 ohms.
See the entire playlist of mini amps here:
http://www.youtube.com/playlis
t?list=PLC9341FA0AF3BD899&feature=viewall
Be sure to visit http://www.OldSchoolStereo.com and view the comparison of the Chinese mini amps.
This entire video was made on my Apple iPhone 4 using the Apple earbuds with microphone. Video was edited entirely on the iPhone using iMovie for iOS. Amazingly powerful tool!!
http://www.oldschoolstereo.com
http://www.youtube.com/bigdwiz
follow me on twitter @oldschoolstereo Less
Added Nov 28, 2011
Channel Tech
Duration 7:27 | views 18134
Local Comments 0
Youtube Comments 81
Rating:
Tags oldschoolstereo bigdwiz dd-1 smd meade916 kinter ma-150 mini amp amp amplifier motorcycle amp lp-2020 ma-170 audio system bass sound scooter amp amp test amp demo rms watts mitzu mit-75az motorcycle amplifier scooter amplifier scooter sound iphone iphone4 iphone imovie ios imovie imovie on iphone video
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Youtube Comments (81)
bigdwiz Says:
May 26, 2012 - According to the silk screening on the amp, it requires 0.5A of current at 12V = 6 watts! Time to load up some JL Audio W7's!!!
zxz38 Says:
May 26, 2012 - its max 60 W.12x5=60
IzetDK Says:
May 15, 2012 - Yea, i know that, but theres so many diffrent sizes of the INPUT.. which you put IN the ampilifer (idk how to spell it correctly)
bigdwiz Says:
May 15, 2012 - Per the side of the amp, it requires a 0.5A 12V power supply.
bigdwiz Says:
May 15, 2012 - Yes, but I'm not sure what kind of sub would actually work with this amp....maybe a 2" one?
IzetDK Says:
May 14, 2012 - Hey, could you please tell the specifications for the POWER SUPPLY? As it doesnt come with it, and i cant figure which one to buy, etc.. ?
SirKendalMintcake Says:
May 14, 2012 - 500 watts is a little bit creative. Chinese stuff is always dodgy.
Andrew Thiery Says:
May 14, 2012 - dose it have a lpf? for a subwoofer
turalaita Says:
Apr 18, 2012 - thank you..
DirtyPotato148 Says:
Apr 9, 2012 - please can you do a totural set up because im think of buying them
bigdwiz Says:
Apr 9, 2012 - Jazz song is Chelsea's Day by Ray Obiedo.
turalaita Says:
Apr 8, 2012 - I'm referring to the jazz song..
turalaita Says:
Apr 8, 2012 - yes jazz song..
bigdwiz Says:
Apr 2, 2012 - The background music/beat I created myself on my iPad using GarageBand. Or are you referring to the Jazz song?
turalaita Says:
Apr 2, 2012 - tell me please name of the song from your vodeo..
Chris28456 Says:
Mar 22, 2012 - To the battery terminals....
t0nyDc1 Says:
Feb 27, 2012 - how have you wired up the power supply???????????/
TheGabMab Says:
Feb 17, 2012 - piece of shit without opwer
goshobul Says:
Feb 10, 2012 - dont you mean AC to DC :D
bigdwiz Says:
Feb 10, 2012 - Using this amp, you could make an iPod speaker dock, but it is weaker than most of the nice docks you can buy. I still like the Lepai LP-2020A+, but with any of these, you'll need either a small 12v battery or a 12v DC to AC adapter
SilvanTheuma Says:
Feb 9, 2012 - I was looking for an amp because I was doing some kind of a powerful portable iPhone dock. Does this amp have a built in battery and what type of mini amp do you suggest if not this one. thanks a lot
jgbelmont Says:
Jan 17, 2012 - Will you test the Mitzu Mit-75n?? Super Please!!!!
bigdwiz Says:
Jan 16, 2012 - The power wire attached to this amp is no larger than 16ga. I miss the days of mfg's rating amps based on 4ohm RMS output power. Back when a Punch 150 was 150 watts at 4 ohms (stereo). Nowadays a Punch 300 is 75x2 at 4ohms and 300 watts total at 2ohms (at 14.4v, not 12v also).
StinkyCheese9999 Says:
Jan 16, 2012 - Well, you can pop the cover off and tell a lot. No voltage boost circuit means at most it can manage rail-to-rail voltage output minus forward drop across the amp output stage. However, just for kicks a "500W" amp ought to have testing with 12ga or lower power supply wiring. Maybe the wiring used in the video was <= 12 ga, or maybe not but I mention it for other people's testing of 500W amps.
goshobul Says:
Jan 2, 2012 - this is 2 x 25w :D i have my on parallel mono :D :D :D