Sunbuck Small Stereo Amplifier, Stereo Receiver with Bluetooth, Optical/Coaxial Jacks for TV/CD/DVD/LP/PC, Support 192kHz Audio, Max 300Wx2 Power, Home Audio System, Receiver for Speakers, AS-25BU
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Dec 20 – Dec 21
Features
- Perfect Sound Quality Experience: The AS25-BU stereo amplifier upgrade the audio processing chip to support 192kHz audio signals. The low distortion and low noise enable you to relish wonderful music at all times
- 300W Power: After upgrading the transformer of the audio amplifier, the power output is increased without reducing the sound quality. The power amplifier provides you with a maximum power output of 300Wx2 (RMS 50w 2), suitable for indoor offices, garages, bedrooms, as well as outdoor balconies, gardens, and swimming pools.
- Optical/Coaxial Jacks: The digital amplifier can be connected to TV, CD, DVD, computer, record player, smartphones, iPads, laptops, projectors, etc. Support RCA input, USB2.0, SD card, Bluetooth 5.0, FM radio. It enables you to build a high-quality 2.0 CH audio system for seamless connection between devices
- Bluetooth 5.0 Wireless Connection: The bluetooth amplifier is equipped with Bluetooth music streaming with a wireless range of 40 feet / 12 meters or more. (NOTE: Signal and volume may be intermittent if there is a wall blocking between the Bluetooth device and the amplifier. Please pay attention to the distance used!)
- Small and Easy Operation: The stereo receiver has a very mini footprint which is ideal where space is at a premium. Recommended for home audio, computer game audio systems, tower speakers, garden speakers. With bass and treble control knobs you can set the desired output of music according to your wish
Brand: Sunbuck
Connectivity Technology: Bluetooth, Optical/Coaxial Jacks, RCA, SD, USB
Controller Type: Push Button
Special Feature: Built-In Bluetooth, Optical/Coaxial Jacks, Support 192 kHz audio
Compatible Devices: DVD, Game Console, Personal Computer, Smartphone, Television
Connector Type: Optical/Coaxial Jacks, USB Type-C
Audio Output Mode: Stereo
Surround Sound Channel Configuration: 2
Color: Black
Product Dimensions: 6"D x 5"W x 2"H
Product Dimensions: 6 x 5 x 2 inches
Item Weight: 2.2 pounds
Item model number: AS-25BU
Is Discontinued By Manufacturer: Yes
Date First Available: May 16, 2019
Manufacturer: JS Electronics Limited
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Dec 20 – Dec 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Surprisingly good for the price. The only thing missing is a headphone jack but...it's a little power house and well drives my bookshelf speakers. It has presets and the Bluetooth connects easily and as expected. I'm going to mount this under a top cabinet in the kitchen. Don't expect much from the manual as it is written in very broken English but you can still figure it out. It also comes with a standard AC cord so you don't need to fuss with a DC wall wart. It comes with a small remote as well. You can't go wrong for the price. FYI - In the rating questionnaire it asks about "Sheerness". I have no idea how that applies here. P.S. - I have a few additional comments regarding this item after reading some of the other reviews. 1. Quality - some folks have had issues after running the system. Since my review was written days after receiving it, I can't comment except to make sure you put it in a location where airflow to the unit is not blocked. So far, my unit is not getting hot. 2. Sound quality - Folks, this unit costs $45 dollars. If you are and audiophile and into studio quality sound, then I think you are expecting a bit much for $45. I'm a music lover and it sounds plenty good enough for me. I've listened to YouTube music videos and some FM music stations and it sounds pretty good to me. It does go louder than I need and I get some decent full bass sounds from my bookshelf speakers. If you expect 130 db rap or pounding rock or the fine nuances and dynamic range of the 1812 Overature, then this unit might be for you. But aside from the long term potential quality issue, I'm quite pleased with the unit. If you are happy with the quality of music over your cell phone, this will do just fine and my wife is happy listening to Bocelli over this unit. So, since I've already belabored this issue, I'll repeat, for $45 you get a very small unit that sounds pretty darn good. Oh, and yeah, the controls seem a bit weird at first but since the unit is small, 20+ buttons simply won't fit on it so they've overload some of the buttons with more than one function which is not big deal after 10 minutes of acclimation. And then there's the remote. The first time I tried it didn't work either but just press the button a tiny bit firmer and it works fine. Lastly, if you plug this into cheapo speakers, it will sound crummy. Buy a $1000 receiver and plug it into a $99 dollar speakers, it'll sound lousy. So make sure your speakers match your sound expectations. The End
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Reviewed in the United States on December 27, 2020 by And6
Connects easy, flexible and sounds great!
Reviewed in the United States on October 5, 2025 by FPS
I purchased this little amp to power up some old Bose speakers in my shop. I was concerned that the unit would get hot, so I placed two small wood blocks under it to get air movement as I tend to crank the volume. I have used it a couple of times now, and it has had some Bluetooth hiccups, but I wonder if it's due to the amp or my phone. This tiny box does manage to handle my two speakers. I wouldn't say I like the remote control as it is NOT the remote shown in the sales presentation. It is much smaller, and I feel I will break it when I push a button; yes, it is that thin and flimsy. The photo in the ad shows a remote that fills a hand in reality the remote is less than half that in size and very thin, it also has to be very close to the unit to work .
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Reviewed in the United States on September 25, 2024 by marcel b
I didn't pay much attention to the size when i ordered it and was taken aback when i saw how small it was. I went ahead and hooked it up anyway and was just literally almost blown off my stool! The volume is defaulted at 30 (max) and my head was inches away from my old "boombox" speakers. I looked at my little girls on the ground about 10 feet away and they had their ears covered! Small little unit packs a serious punch. Like other reviews the bass is a little lacking, however, that doesn't bother me in the least. One of the selling points for me on this was the remote control. That works great. Another was the fact that it has a tuner, aux and bluetooth. All work great with not issues. If you still use CDs then there is a hookup for that as well. You absolutely cannot beat this little unit. I only paid $40 but i feel it's worth much more.
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Reviewed in the United States on January 20, 2020 by Aimee Aimee
Likes: Cheap Easy to use Loud enough Dislikes: Hum Do depth to sound bass distorts easily I have 2 old but good home theater speakers that recently were moved to my garage so i can have some audio out there. I bought this power it and overall it works fine for what i need it to. I was a little disappointed with overall audio quality though. I wasn't expecting much since it's a fairly inexpensive amp but i wasnt expecting the bass to distort so easily. I also get a hum in my speakers from this. I tried a ground loop elimator to no avail. It's not terrible, and you can't hear it when any music playing. It's perfect if you just want a small amp to play some basic music were quality isnt really that important (Like in a garage were you are working) but i wouldn't recommend it for main music in your home.
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Reviewed in the United States on April 8, 2021 by Droid X2 Fan
I have this hooked up to some speakers on our patio for music in the backyard and it works really well. Nice and small too.
Reviewed in the United States on January 6, 2025 by Vic Lance
Lasted about nine weeks, suddenly there's a large hum on one side of the receiver (other side is just fine, when you swap speaker wires the hum switches speakers). Manual is useless for troubleshooting. Can't return because it's juuuuuuust past 60 days. While it worked, worked pretty well. I needed an inexpensive receiver to drive sound to some speakers in the workshop, this did the trick...until it didn't. Less than impressed with its reliability.
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Reviewed in the United States on September 3, 2025 by ANONYMOUSAMAZONCUSTOMER