Atma-Sphere vs. Supratek


I placed an order last year for a Supratek Cortese LCR preamp; it will still be a few months until it will arrive at my home in Silicon Valley. Meanwhile I keep reading good things about the Atma-Sphere MP-1 and Mp-3 instruments. Can anyone voice an opinion about those two brands, both hand-made tube machines in a similar price range? I listen to all kinds of music, including opera, mostly on vinyl [Basic 2200 Signature with Vector 4 arm and Benz Micro LP-S cartridge, Sunvalley phono stage with EMIA SUT, MSB Platinum Signature CD transport and DAC, LinkwitzLab NCore6 active crossover/amplifier, and Linkwitz LX521.4 open-baffle speakers (best speakers I have ever heard)]. For preamp I am currently using Ed Shilling’s The Truth. For me a natural-sounding soprano voice is the pinnacle of well reproduced music.

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@david_ten I don't see this as subjective opinion or biases affecting our judgement. There are  objective value judgements in regard to what are best build practices in assembling audio components. I can only say the photos I've seen of Supratek internals don't conform to these best practices.

 

Reliability is our means to measure whether particular product conforms to best build practices. Chorus claims he's observed reliability issues, this is only anecdotal evidence at best. Only a survey of many Supratek owners over relatively long period of time will reveal true reliability. If there are no reliability issues, messy internals are only esthetic issue, otherwise it is an issue.

 

On presumption it isn't an issue. Why bother with neat and tidy, well laid out wiring and parts if reliability is of no concern? Is this kind of assembly and build quality only a marketing ploy?

I'd like to throw out my above comments as to assembly tidiness and best build pracitces to audio equipment manufacturers out there. I understand you may not want to come out and criticize Supratek, but tell us why you observe and conform to well organized, neat and tidy build practices? Does this have bearing on sound quality or reliability? Are there objective best build practices, or is it an arbitrary construct that you feel obligated to follow?

To be fair to Supratek, the later units are better built than earlier ones. Early ones were a complete and utter rats nest of bad connections, poor grounding, and downright dangerous wiring.

However they are still not very neat and tidy inside which does lead to problems.And like Chorus above, I’ve a higher percentage of Supratek, than Atamasphere.

You can see what a new one looks inside here (at the bottom, left photo) on my website. Full disclosure, it's compared to my lower priced preamp.

https://www.blackdoghifi.com/About.html

 

Blackdog - While i happen to agree w much but not all of your design and manufacturing principles, I do think for transparency you should add your industry affiliation in signature block to each post.

Best to you

Jim