Portable tube amp from china?
Dec 3, 2019 at 10:54 AM Post #513 of 916
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This is what I received!
My B4-X looks different? Is it a clone?:anguished:
 
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Dec 10, 2019 at 3:45 PM Post #520 of 916
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Did you mean "charged" or completely replaced with a new one?
it's not a simple fix, first you need to make sure you don't reverse the polarities, then you can charge it only for one hour and 15minute on 24v(doesn't charge with original charger) and last you need to lower the volume and use some other amplifier as a preamp (i use the NX4)
 
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Dec 10, 2019 at 4:25 PM Post #521 of 916
it's not a simple fix, first you need to make sure you don't reverse the polarities, then you can charge it only for one hour and 15minute on 24v(doesn't charge with original charger) and last you need to lower the volume and use some other amplifier as a preamp (i use the NX4)

I decided to make the B4 completely stationary, by taking out the battery, and using a MEANWELL 12V 2A power supply.
 
Dec 12, 2019 at 5:52 PM Post #524 of 916

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