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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).Thanks for your follow up! The hum from the headphone does get louder with higher impedance settings. I do hear the same frequency of...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).if you don’t mind me asking, how is the ifi ground defender/isolator? Does it reduce or eliminate the hum?
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).If it is indeed a ground issue then it will fix my issue as well!! i am experiencing the exact same hum! Volume independent
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).When is your power strip coming in? I am super eager to hear if that reduce the noise at all!
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).Which power strip did your dealer recommend?
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).What would be an easy way to eliminate ground fault?
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).Is this similar to what you are hearing? https://voca.ro/1et7cYEA6XAP This was recorded from my headphone by putting the mic close to...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).What is the DC offset and how do I test it?
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).From my understanding Cayin used HD800 and HD800s as part of their reference headphone when developing the amp, shouldn’t they be able...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).I experience humming through HD800s and HD650 as well. Quieter music definitely can hear the hum, louder music not so. Still trying to...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).The DAC is already only using 2-prong, iPad and laptop runs off its own electricity. I am in a house and have tired turning off all the...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).Unfortunately no I don’t have any source that doesn’t go through USB. Will a better power conditioner/filter resolve the issue? I am...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).I did take all the tubes out and reseat them, no change.
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).I’ve made new discovery. I now believe the noise comes from the outboard power supply. When I put my ear close to the power supply, I...
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linziyi replied to the thread Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91).I apologise for not mentioning my setup! I use: PC, Mac, or iPad -> USB cable -> RME ADI-2 -> XLR -> HA-300a -> XLR for HD800s, 6.35mm...
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