Audiophilepure

https://www.enjoythemusic.com/superioraudio/equipment/0126/Vitus_Audio_SIA025_MkII_Integrated_Stereo_Amplifier_Review.htm

I can say that Vitus Audio’s Signature Series SIA-025 Mk.II integrated stereo amplifier, as reviewed here at Enjoy the Music.com, always utterly satisfied, frequently mesmerized, and constantly made me forget I was supposed to be reviewing! I have heard most of the over $25,000 options in the Integrated sector and can say with certainty that it would be on my personal short list to consider the Vitus Audio SIA-025 Mk.II integrated for permanent residence; and the other integrated amplifiers on my list cost quite a bit more. If you are in the market, put the SIA-025 Mk.II at the top of your list; it’s just so good.

There is nothing overly clean-sounding about this dongle. It’s a gutsy, dense, analog-sounding performer, rich in texture and heavier in the bass department.

It is probably iBasso’s most “in-the-moment” creation to date, with an almost joyous top-tapping delivery with both IEMs and headphones alike.

The balance is even-harmonic but not overly lush, at least not as sweetened or as sparkling as the Nunchaku tube mode. It also does not have quite the same clarity and precision as the DC-Elite.

It has body and texture by the bucketloads, creating a fuller, meatier sound and excellent depth, particularly behind the mids where competing dongles like the RU7 can sound flatter.

This isn’t reference or neutral; it’s colored and smoother, especially in NOS mode. You can refine it with the OS filters, but NOS kicks it up a notch, with a sharper, more impactful midrange focus and thundering dynamics from the lows.

The Affinity cable has fixed ear loops, and these are a bit off for my ears, affecting my ability to obtain a secure fit. It doesn’t affect comfort much.I got to experiment a bit with cable rolling on the Eminency, and the results were mixed but mostly negative in effect.

The first cable I tried was a silver cable, and I didn’t like the result since I noticed a sudden drop in bass definition and body, plus the overall sonic profile became strident.A copper cable was the best in bass definition compared to the silver cable, but the high frequencies then lost a micro amount of definition.

I think that the rule you must follow here, if you’re hell-bent on cable rolling, is to stick to hybrid cables and avoid cables made with only one type of cable strand material.That way you get that blend that’s sonically similar to the Grand Affinity cable.

What impressed me most was the absence of significant compromise. Too often, all-in-one products excel in convenience while falling short in sonic performance. The MOON 371 largely avoids this pitfall by delivering a level of musical presentation that would not feel out of place in a system composed of separate components.

Its neutral tonal balance, strong dynamic capabilities, excellent imaging, and comprehensive feature set make it a compelling centerpiece for a contemporary music system. The inclusion of HDMI ARC, phono capability, extensive streaming support, and a robust software ecosystem further enhances its appeal.

At $6,500, the MOON 371 is unquestionably a premium product. Yet its thoughtful engineering, outstanding build quality, comprehensive functionality, and consistently engaging sonic performance make a compelling case for its asking price. Within the category of all-in-one streaming integrated amplifier, it is difficult to find a more accomplished or better-rounded product. For listeners seeking a sophisticated, no-compromise integrated solution that can serve as the heart of a reference-quality music system, the MOON 371 deserves serious consideration.

That instantaneous collapse focuses all that kinetic energy into a microscopic point, creating a high-speed liquid “micro-jet” moving at incredibly high speeds, along with intense, localized heat and pressure. And because the bubbles are smaller than the thickness of a human hair, roughly 75 to 100 microns, they can reach directly into the grooves, harmlessly blasting away embedded dust, mold, oils, release agents, and any other debris, a feat no brush or vacuum pad can begin to match!

The Sonic Results
The experience of hearing ultrasonically cleaned records that I’d had in my care for decades, ones I had cleaned with any number of earlier methods, was revelatory, as the sonic transformation was consistent and unmistakable. The noise floor was dramatically diminished, surface noise all but vanished, and what emerged from that newfound quietness was just as startling.