Dear Friends of Amazon When I received the V-Amp I hear a noise inside the device,a technician found a Lithium battery¿What is the use of that battery in the v amp?
1525893
I'm assuming it is to retain the user defined settings when the unit is turned off.
1611903
I have a V amp 2.0 and yes it is the battery to save user presets. I have had to replace the battery a few times. "No user serviceable parts inside" my foot.
1611904
I have no idea, whatsoever. I will tell you this - the one we purchased stopped working before the warranty time was over (90 days?) and we were unable to contact the seller in time to do anything about it. The thing is a waste of $ as far as we're concerned. We'll never buy from them again.
796167
Dear Lenora----it seems to work just fine for me---. I purchased two of these items and both work just fine. There is an amplifier that must be switched on (uses 1 AAA battery) in order for the volume to really work best---if the amplifier isn't on or the battery is dead there (essentially) is no volume. As long as the battery is good and you have the amplifier turned on (that is by the way how the volume is adjusted) all is well and for just a little speaker it can be quite loud --- but that is a function of how close it is to your ear. For me and my purpose I have no complaints and it's my opinion that you'll be just fine. Dear Lenora----it seems to work just fine for me---. I purchased two of these items and both work just fine. There is an amplifier that must be switched on (uses 1 AAA battery) in order for the volume to really work best---if the amplifier isn't on or the battery is dead there (essentially) is no volume. As long as the battery is good and you have the amplifier turned on (that is by the way how the volume is adjusted) all is well and for just a little speaker it can be quite loud --- but that is a function of how close it is to your ear. For me and my purpose I have no complaints and it's... » Read More Dear Lenora----it seems to work just fine for me---. I purchased two of these items and both work just fine. There is an amplifier that must be switched on (uses 1 AAA battery) in order for the volume to really work best---if the amplifier isn't on or the battery is dead there (essentially) is no volume. As long as the battery is good and you have the amplifier turned on (that is by the way how the volume is adjusted) all is well and for just a little speaker it can be quite loud --- but that is a function of how close it is to your ear. For me and my purpose I have no complaints and it's my opinion that you'll be just fine. « Show Less
411075
I must AMMEND my former statement!!! A DUMMY battery is NOT A DEAD one. They are actually sold as dummies by companies and are cheap. I was lucky enough to have been corrected by RbwNY on July 7th. He/she informed me of this and added that pairing a 'dead' battery with the Li-on s can cause damage, etc. to the equipment. I should have known this as I know that pairing even an alkaline with a on-alkaline is NOT recommended. My apologies to everyone out there who has read my former comment. And a BIG THANKS to RbwNY for the help and advice!!!
71179
i came here to ask same thing. love the speaker, really loud but battery went bad really fast and now i can only get about an hour use before it goes dead :'( and from others say i guess it's just a matter of time before it doesn't work at all.
215543
First of all I have never received my order from Amazon.I am still waiting. Secondly There will be a small voltage drop but unless you are using some very sensitive equipment it should not be a problem. I just hope Amazon comes through with my order soon. Art
1687739
I think it is cool how Amazon notifies us when someone has a question about the things we have had experience with! So, the battery says: Vinnio R11, L1154 - perhaps you can google that and see the size. But I CAN tell you that it comes with three... which each were dead within one day each, and that included undoing the battery itself at night or when not in use for a long period. Then we figured it was cheap batteries, so a friend bought her regular batteries (sorry, dont know what size/name/cost) from the pharmacy - and they too were only lasting for a very few days. That CAN'T be right. She can hear great - but we are still searching for a battery supply for her that works best. Helpful? Hope so.
386161
Anyone crack one open and see if this is anymore than a transformer and a couple diodes or is it an active charger that dials back the voltage or current when the battery is charged? Thanks. (I know it's only $8, but still wondering)
579119
i´m very disapointed of the performance of the 36db amplifier because I connected to the cable TV service and I don¨t got good response.Another Amps,Radio Shack for instance, works fine. I don¨t recommend to buy this one which do not have any Warranty. About Power supplies, Amazon never states voltages in all electronic devices. My suggestion is to put 110V - 220V or the last Autovolt; for this reason I do not buy any more electric devices. J. Humberto Gamboa (Bolivia)
279320
hi, the guitar does came with a battery alredy, at leaste mine did, its needded the battery to play with the amp, in the ecualization pad that its in the guitar theres a little lift to put out the battery, try to do it with care to pull out the battery place
504783
Look at the power supply, it should have a voltage shown on the label, then use a Volt Ohm Meter (VOM) to check the voltage. If it reads at or slightly higher than the rated voltage then it is probably OK and the problem is in the amplifier. It could be either unit causing the problem. If it is still in warranty you might be better off to get an RMA from the manufacturer and return it for repair or exchange.
103213
Totally agreed!!! so I'm planning to buy the spare battery... I think Amazon needs to correct the misleading information regarding the specification of UL30A!!
1437833
Follow up: After several months my V3 developed an termittant pulsing noise in the left channel. I worked with a technician in China to try and get rid if the noise. Not successful. I purchased a second one with the same results. Finally got a Fiio e7K DAC/Neadphone amp on Amazon and I'm now very happy.
180597
Mine does not make any sound at all, how ever when I first got it and plugged it in , i checked all of the adjustable settings and they were right on. I left my two way radio plugged in for about a week on six volt, took it out one day and did not get one hour of operating time, the battery was low.When I got home I checked the voltage again, my six volt now only puts out three volts. I have to switch it all the way up to twelve volts to get seven volts. I would not buy another one of this brand. Maybe just bad luck I don't know. Dave
1054775
Did the description say it played a sound? I just saw it takes double A batteries. Had no idea it played a sound. Good to know. I'll look n see if I can find any literature.
2159025
sorry I'm not to tech savvy. I had a friend help and I didn't know much of what was going on. I do have a separate amp, which is an inuke nu1000sp, made by a behringer. I have 3 total, 1 each on three chairs. they do work really good, especially compared to the higher price ones. if I can find more info I will let you know.
444276
I ALWAYS use lithium batteries in mine. I do NOT ever use rechargable ones. Right now I am using 'regular' batteries since my batteries died while we were away at a graduation. I will use them until they die and go back to the Lithium. Also, I have had to take my batteries out totally and reinsert (in short - reboot) but it was because I did NOT want it on video and had hit the button in error. I am wondering if it could be your camera.... It would be worth a try just to use a different type battery and if it still gets hot and stops working, send it back.
1659182
I have played the unit for a good two hours with the battery. I almost always have it plugged in when I view it. I would see about returning the battery, or getting a new unit. Thats what I like about Amazon, I have never had a problem with a return or replacement.