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I have both a V3 and a V4 and they just have too much interference in my house. There is almost no shielding on the metal, and while I don't do this on purpose, I once dropped my phone while I was giving the LD1+ time to warm up and there was a noticeable interference buzz when my phone landed near my LD1+. Occassionally it can get quiet enough or I can turn up the volume enough to not notice the background noise, but even after changing the jumpers to get the best sound for the tubes and still getting occasional loud pops and clicks after playing for an hour, I'm done fighting it.
Idk if the higher models have any shielding, but the xDuoo TA tube amps/hybrid amps seem to not have any interference like the LD1+ does. Kind of a bummer since when it was working better it was kind of fun to try to pick up differences between tubes.
Sugar_Free
365
May 6, 2018
Brosefstalin42I had this issue too but I came to find out it was because of my router. The tubes themselves will pick up the frequency and create annoying interferences, so I placed my router in a different room and everything was fine after that. You can also swap tubes that are more resistant to interference and that'll help too. Tubes can also pick up vibrating sounds which explains the buzzing sound when you drop your phone. If you lightly tap on the tubes while listening to music, you'll hear the vibration and your finger tapping on the glass for each channel.
But yeah... Tube amps can be annoying
SStas
95
Dec 2, 2018
Brosefstalin42Its the tubes themselves that pick up the RFI, not the circuit. This is pretty common with pentodes I am finding, and why the triple mica tubes seem to be the highest rated tubes in class. I had this issue for a bit, but I cabled everything properly, and moved the amp far away from the computer and the noise goes away.
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