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Description
B042 4-in 2-out Power Amplifier Sound Switcher Loudspeaker Switch Distributor, 300W Per Channel Lossless Sound Quality, B042Product Presentation Do you have 4 power amplifiers and 2 sets of speakers that need to be connected to each other? Do you need four amplifiers and two sets of speakers to get stuck? A powerful amplifier and audio switcher can solve these problems, 1. 4 power amplifiers push button select switch input,2 sets of stereo speakers push button select switch output (2 sets of speakers can be opened or closed independently) 2. sets of stereo speakers can
Product Presentation：Do you have 4 power amplifiers and 2 sets of speakers that need to be connected to each other? Do you need four amplifiers and two sets of speakers to get stuck?
A powerful amplifier and audio switcher can solve these problems,
1. 4 power amplifiers push-button select switch input,2 sets of stereo speakers push-button select switch output (2 sets of speakers can be opened or closed independently)
2. sets of stereo speakers can sound at the same time, you can also turn off one group of speakers or more groups of speakers individually, manually select the pushbutton switch
3. The maximum power of each channel is 300W
4. Signal input provides vacuum tube power amplifier signal no-load protection function
5. manual selection of input and output switching, straight plug straight use, switching signal stability, between channels will not produce another dry close or noise
6. Compact design of solid metal shell, easy installation, the product does not need external power
7. Simple installation: Input and output plug and play easy installation, you can enjoy different audio experience
Product Parameter：
1. Compatible with all types of power amplifiers and speakers
2. Input/output accepts heavy-duty speaker wire or speaker pin wire through the terminal port
3. Connect the power amplifier to amplifier 1-2-3-4
4. Connect the loudspeaker to position A and B respectively
5. Turn on your power amplifier stereo device and the product requires no external power supply
6. Input:4 sets of inputs (banana plug)
7. Output: 2 sets of output (banana plug)
8. Power: Up to 300W
9. Metal material, fine steel housing, compact size suitable for any system
10. Channel Power: Each channel supports up to 300W of power
11. Frequency response: 10Hz-50KHz
12. Net weight: 0.93 kg
13. Packed weight: 1.09 kg
14. Product size: length 240mm x width 105mm x height 55mm
15. Packing size: length260mm x width 185mm x height 65mm
16. Kit list：4 input 2 output power amplifier and sound switcher loudspeaker switch distributor x 1
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 4
Good product
Set name: KOJIC
I have used 1/2 bottle since December. Easy to use on dry skin, I use it before showering. I Probably don’t use it enough, simply because I forget. I have had dry peeling skin on my forehead recently and thought, oh I should use it there. I have to say, it made a big difference. One use and the dry skin came off and my forehead looks much better. I was having a hard time with makeup looking splotchy and now it goes on smooth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
Makes the skin smooth and soft
Set name: KOJIC
The product is wonderful. The first time I used it, it took off alot of the dead skin on my feet. Better than the "egg" or pumas stone. And bonus my hands are rough to and while rubbing on feet it rubbed off my hands as well and the hands are smoother too. NICE. Has a vick's vapor rub smell to it. Not overly strong. Im looking forward to having my feet smooth for the first time, ever!!! The only thing is the bottle it comes in. I could not get the sprayer to work. The off button worked beautifully but the on button did not work. When on it pumped but nothing came out. I even had my family and friends try to get it to work, but to no avail. So I put it in another spray bottle which worked and it was fine. Love the product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
★★★★★ 5
Works great,smells like Noxema
Set name: KOJIC
This is a great exfoliater. I use it once a week from face to toes. The smell reminds me of Noxema wich I'm not fond of but it's dose rinse off well. Works on both wet and dry skin wich I like better than a different brand which only works on dry skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 3
No change in hyperpigmentation
Set name: KOJIC
I've suffered with hyperpigmentation on my armpits and have been using this for about a month now. I don't see a difference as far as the hyperpigmentation. I use it every other day before I shower but I will give three stars since it does smell great and leaves my armpits feeling soft after each use.
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Reviewed in the United States on May 13, 2026
★★★★★ 4
Woooo chile….
Set name: KOJIC
This product works great but there should be a disclaimer or lil tip for my guys and girlies who have longer leg hair…you might perhaps trim the legs hairs first or skip the legs altogether cuz girl this ish pills tf up and it took me a good 45 minutes to get it off my legs lol. Think bazookah bubblegum stuck on your skin after blowing a bubble that exploded 😭 5 star product but deducting one star for my poor legs
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
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