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head-case.org

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Invision Community forum in English. 10 sections tracked: Headphones, Headphone Amplification, Home Source Components, Portable Audio, Audio Accessories, Do It Yourself, General Announcements, Suggestions, Miscellaneous and Home Theater.

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STAX SR-X9000 Failure Rate Survey

No, neither the dealer nor Stax inquired about the amp (a @GeorgeP DIY T2). BTW, I'm in Canada, so a different service network. I can't comment on any of your service concerns.

STAX SR-X9000 Failure Rate Survey

I don't know the situation of the US dealer, but my friend in China confirmed that the Chinese dealer offers warranty service only when you use a STAX amp, and they don't provide cross-regional warranty services. Considering STAX is theoretically a Chinese company now, maybe this goes the same for the US market.

STAX SR-X9000 Failure Rate Survey

@velomane did your dealer or stax inquire about the amp you were using? I am debating whether to go grey market or US dealer, because of what happened to my japan-purchased SR-009 just before COVID. It developed a hum on the right channnel just after two years of use, so I just shelved it. I tried contacting Stax USA last month if they can repair it, and radio silence so far. I am worried that even If I get the X9000 from a US dealer this time, I might not be able to get service from Stax USA if I use my KGSS-HV.

KGSS-HV Maintenance

I have a KGSS-HV that I acquired years ago from a local builder. It has Sanyo parts and +/- 400V BHSE power supply. I started using it again last week after years of storage and it seems to be working great with my L700. Question: Does the KGSS-HV need periodic maintenance? I ask because in troubleshooting my SR-009 hum on the right channel, I read about DC offsets and balance. Are these something I should be checking periodically?

KGSS-HV Maintenance

I have a KGSS-HV that I acquired years ago from a local builder. It has Sanyo parts and +/- 400V BHSE power supply. I started using it again last week after years of storage and it seems to be working great with my L700. Question: Does the KGSS-HV need periodic maintenance? I ask because in troubleshooting my SR-009 hum on the right channel, I read about DC offsets and balance. Are these something I should be checking periodically?

STAX SR-X9000 Failure Rate Survey

The durability issue was only my interpretation of what happened. I may be wrong. Let's wait for more results before drawing that conclusion. Still, these things make me so happy. Such a great set of cans.

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