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    Velleman, Inc â?? Super Stereo Ear Mini Kit Mk136 â?? Entry Level Audio Amplifier Soldering Project
    Velleman, Inc â?? Super Stereo Ear Mini Kit Mk136 â?? Entry Level Audio Amplifier Soldering Project
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    Elenco

    Velleman, Inc â?? Super Stereo Ear Mini Kit Mk136 â?? Entry Level Audio Amplifier Soldering Project

    3.9
    €51,00
    €51,00
    €84,00
    Sold out
    Save 39% (€33,00)
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    Description

    • DIY - This kit is 100% DIY and a perfect project for those who are new to circuit design, hobby electronics, and sound technology.
    • TRUE STEREO AMPLIFICATION - This build features two microphones that act as inputs to create a stereo signal, outputted through a standard 3.5mm headphone jack.
    • FULLY FUNCTIONAL - You'll produce a practical, usable piece of tech with this project: it includes an on/off switch and a potentiometer which can be used to adjust the volume.
    • POWERFUL AMPLIFICATION: This build is capable of amplifying sound up to 50x louder. Perfect for a science project, a DIY hearing aid, headphone add-on, or just for fun.
    • SPECS - Power Supply: 3 1.5V AA Batteries (not included). Dimensions: 2.4" x 2.1" x 1.7".
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    • All customers are entitled to a return window of 14 days, starting from the date of delivery of the product(s).
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    Customer Reviews

    Great stereo amp for the experimenterI have made several of these kits over a 10-year period. I'm an electronics and acoustics experimenter and these amps are great for listening to very quiet or distant sounds with very good fidelity and low noise. For some applications, I have mounted the microphones off the board, using short length of shielded cable. Use a good pair of earphones and you'll be amazed at what it can pick up. My grandkids like to play with the amp, roaming around the house with earphones and seeing what sounds (clocks, refrigerator, footsteps, breathing, etc.) they can hear.5Nice Kit But Mine was Short One CapacitorNice kit. Doesn't take long to build and produces a nice clear sound. I'd have given it five stars but all of the capacitors were not included in the kit and I had to supply one 470uF capacitor from my stock. No big deal but I stock a lot of spare parts. It could be pretty frustrating if you only had the parts of the kit to use. The only other complaint is the schematic is so small.I really like that this kit came with an on off switch. I've built similar kits that don't have a switch included and then it's a hassle trying to find where to mount one so you don't have to remove the battery all the time.4Amazing little amplifier, easy to solder.Wow, just wow, this is one really cool kit! I purchased this for my husband who loves to put together electrical DIY kits and wasn't expecting much really. Overall the kit was easy to solder together, it took an hour or so. The kit comes in a clamshell packaging and instructions are included on the cardboard photo on the inside.All components were in the kit, nothing missing, and all worked. What was actually shocking was how well this worked once we put batteries in it, you can hear some of the most faint sounds that you normally would not notice otherwise. The only thing it didn't seem to want to pick up was the TV audio which is what I was hoping for as I am a bit tone deaf, not sure if it was a distance thing so we are looking at putting a parabollic reflector on it to see if that helps, but otherwise if needed for just hearing conversations or even ambient sounds this will certainly do the trick.Will be picking up a few more of these great kits for family members to use for hunting and outdoor guiding, they are that good!5Great kit, excellent result.Cool kit. Only my 2nd soldering project kit. First was that 3D Christmas tree. This was more involved but the end product is WAY more impressive. The only issue is the mic connections are a little dubious. But, it might pay to add some kind of extension, or alligator clips. Wind shielding would help outside. Real cool product, good instructions, fun build, great result. More of a 4.5 really.4Fun to make, not to useThis kit went together easily, with easy to follow instructions. The finished product does work, in that it picks up sound very well. Perhaps too well. Of course, it is a very simple design, so there is no filtering of the sound it picks up. I tried it out listening to the TV, and although there was some echo effect, it picked up the TV very well. Unfortunately, it picked up every other little sound in the room as well. Buy it for the fun of making it, not to take the place of your hearing aids.4Fun kit, good value, soldering is a bit tricky in spots. Fun kit to put together. Traces lifted under one of the big caps, but I was able to glob-solder it down. Works pretty well once done. Kit came with a couple random extra pieces (buzzer/speaker and cable connector pins). Board layout has a lot of unrelated solder points really close to each other, so it's good practice for doing very neat, precise soldering, I guess. 4Good kit except the on/off switch is pretty cheapGood kit except the on/off switch is pretty cheap, does not always turn on. Also you have to make sure the microphones cases are soldered to the connecting post (which is a little hard to do) or it will hum big time4Perfect for a costume hearing aid.I bought this to use as a hearing aid for a Mandalorian costume. You really can't hear anything while wearing the helmet when the fans are running, so this is perfect. The only reason I give this 4 out of 5 stars is that the first unit I purchased would not work correctly after assembly. I followed the assembly instructions correctly, and triple checked my connections and component placement, but for some reason, one mic was much quieter than the other. I ordered another unit and it worked perfectly. I'll probably go back and try to find the problem with the first one to use in another costume, but it's not high on my priorities.4I started making good solid shiny jointsThis was my 2nd ever soldering project. I completely ruined my first one while I learned to use a lower iron temp, and where to touch the solder to the joint/iron. But once I got the hang of it, I started making good solid shiny joints. So I set to work on this one, and as a total novice, I have to admit it was a lot of fun. I ended up with a functional result! I couldn't find any cheap earbuds around the house so I had to reluctantly test the headphone output with my nice Sennheiser HD280 Pro headphones. Fortunately I wired all of the capacitors in the correct polarity, so no fireworks, and it works well. It's surprisingly loud, there's a lot of gain in this little amp!Minus a full star because my kit was missing one of the electrolytic capacitors, necessitating a trip to my local Radio Shack (yeah, I still have one in my neighborhood). It's not fun to get a kit that's missing a piece.4Works as expected.I liked building this project, it was fun. It overmodulates a little but works very well. You will get some good soldering practice and some knowledge on how a simple audio amplifier works if you do a little research on the TI NE5532P OP-AMP.4Very Happy Sound quality is much better than expected, I thought it would be like my shooting head set but both amplification and sound quality is much better. Fairly easy to put together, good instructions 5use a 12 watt iron I think the traces are normal and board good quality but you need a cooler iron and appropriate size solder. The IC socket is difficult to install it's chip due to the capacitors being so close and the microphones require a third hand to install. Better have some solder wick handy as it is easy to short traces even with care. 90 decibel increase did not happen with my kit. Realistically, its about the same as your hearing aids if you compare while watching TV. It is non directional and not useful for bird calls 4Works like a charm!Very effective sound amplifier! When I first put this together, I had accidentally positioned the IC backwards, so when I went to power it on....nothing. But boy did the IC heat up something fierce. I quickly disconnected the batteries, used a set of needle-nose pliers to pull out the IC from its socket, let it cool down, and then reinserted it the correct way. Works perfectly now. Only took about an hour to assemble. Hardest parts were soldering the microphones to the PCB posts, and as what always seems to be the case with every Velleman kit, the battery holder final assembly. Not sure what I'm going to do with this, but it's a neat little toy.5
    Velleman, Inc â?? Super Stereo Ear Mini Kit Mk136 â?? Entry Level Audio Amplifier Soldering Project

    Velleman, Inc â?? Super Stereo Ear Mini Kit Mk136 â?? Entry Level Audio Amplifier Soldering Project

    3.9
    You can't add more than 500 quantity.
    €51,00
    €51,00
    €84,00
    Sold out
    Save 39% (€33,00)