Audiophilepure

https://www.soundstagehifi.com/index.php/equipment-reviews/2048-simaudio-moon-761-stereo-mono-amplifier

I also think the 761 is the amplifier most people should buy if they’re considering Simaudio’s North Collection. Although I haven’t heard the 861 in either of my rooms, I have little doubt it would be the better choice for loudspeakers that genuinely require more power than the 761 can deliver, or for buyers who simply want the flagship model regardless of price. For everyone else—including me—the 761 is no less compelling. Its output is more than sufficient for most loudspeakers, and it’s difficult to imagine meaningfully improving on its sound, whether at whisper-quiet or high listening levels. Throughout my extended evaluation, it remained transparent, authoritative, completely in control, and flawlessly reliable. Add Simaudio’s ten-year warranty, and the 761 becomes an amplifier I can confidently recommend to anyone seeking reference-quality sound for the long haul. It’s a great amp—and a keeper.

The sonic benefits conferred by the aR6-T4 were made more readily apparent with its removal from my system. With all components plugged directly into the wall, the soundstage shrunk, dynamics flattened, and there was a coarse grit that overlaid the overall presentation, leading to less verisimilitude, which, in turn, engendered less musical involvement. And, as good as the aR2p-T4 is, especially at its price point, the larger aR6-T4’s performance improved upon that of its sibling with greater transparency, enhanced soundstage recreation, and improved rendering of dynamic contrasts. These differences were subtle, but experienced over time in a system tweaked for resolution, they became difficult, impossible even, to live without. 

Musical enjoyment is a gestalt experience, where minute and disparate factors combine to create an end result that transcends the components involved in its creation. As a music-playback system becomes more resolving, even small improvements begin to have outsized impact. Audience’s aR6-T4 wrought such an impact to my system’s performance, proving that the subtle can be profound. Well done.

https://www.hifinews.com/content/burson-audio-timekeeper-voyager-v-400-max-power-amplifier

This assured sound was much to the fore in classical guitarist Sean Shibe’s Vesper recital [Pentatone PTC5187518; 192kHz/24-bit download]. Every note in James Dillon’s ‘12 Caprices’ landed with real impact before fading into the acoustic, resonant and yet with no blurring. And even with the longish silences here there was not a hint of the Voyagers’ fans running – instead, all the focus was on the image of fingers on strings, and the thrilling effect of thoughtful, totally concentrated musicianship.

Wrapping up with some good old-fashioned rock swagger, The Who’s ‘Baba O’Riley’, from Who’s Next: Life House [UMC 96kHz/24-bit download], sounded as dramatic as ever, The Ox’s grumbling subterranean bass and Keith Moon’s thundering drums underpinning Daltrey’s raw vocals and that familiar windmilling guitar. Meanwhile, The Rolling Stones’ skanking, slinking ‘Fingerprint File’ from It’s Only Rock ’N Roll [Polydor download] saw Keef’s guitar cannoning out from the speakers, Charlie Watts’ drumming as restrained and effective as ever, and Bill Wyman’s bass and synths driving it all along. It was a performance so captivating you could even forgive Jagger’s cod vocal theatrics. Burson’s Voyager Timekeeper amplifiers have it sorted – and in some style.

https://www.enjoythemusic.com/superioraudio/equipment/0926/Kimber_Kable_NEO_HB_NEO_CU_Review_Next_Generation_High_Fidelity_Audio_Cables.htm

Although not used in the review, there is a third cable type in the flagship NEO series. The NEO-AU. This one is made entirely of silver. It uses the same technology as the other two cables, but instead of copper, it uses silver. It is mentioned here for completeness’ sake.

The next cables provided were a pair of Kimber Select KS-1026 unbalanced, single-ended audio interconnects for connecting the streamer and CD player. They also served to switch between different configurations. The KS-1026 is the NEO-HB counterpart in the Select series. Though it must be said again that while they are both hybrids, they do not share everything. The NEO is a higher-level product, so one should not expect its performance to be equal.

The final two interconnects were unbalanced digital cables. Kimber decided to stop producing the one they had made in the Select range. They do make ones in other places, but for now, the only one that seemed to make sense was the D60, which comes from the Summit series. The D60 is a digital cable that goes back a very long time. It utilizes a solid silver core with dual-layer pure silver shielding, providing 100% circumferential coverage and bonded to the connector shell for absolute immunity to noise. They also included a prototype that I’ll mention later.

https://www.stereophile.com/content/pearl-acoustics-model-one-loudspeaker

The driver is only half the equation; the Model One’s cabinet, based on the Voigt pipe design, is the other half. In a conventional speaker enclosure, the rear soundwave cancels the sound produced by the front of the cone. In a Voigt pipe, the rear wave is delayed so that it exits the enclosure in phase with the front wave, which it does through the vent at the base of the baffle. “The two waves reinforce each other, increasing acoustic output,” explained Harley. “Especally in the lower bass region.”Another characteristic of the Voigt pipe design is its tapered internal geometry, which works much like a horn or an acoustical instrument. Harley: “Consider the double bass. When a player plucks a string, the vibration travels down through the bridge into the front of the body of the instrument. The front panel excites a large volume of air, which escapes through the small f-holes, producing loud and powerful low frequencies.”The Model One operates on a similar principle,” he said. “The energy from the rear of the driver excites a column of air inside its enclosure. That air is then released through the front port in a controlled manner, allowing the system to produce very deep and well-defined bass from a relatively small initial movement.”

The NF ACOUS NM25 is a $199 in-ear headphone that exceeds its price range in transient speed, imaging accuracy, and build quality.

It features a diffuse-field reference tuning designed for studio monitoring and analytical listening. Its dual-magnet driver and Clutter Trap 2.0 Helmholtz resonator strike an impressive balance between detail retrieval and listenability.

However, its low-frequency extension is limited, the lower mids are slightly thin, and there’s a deliberate dip around 3kHz, which may limit its suitability for certain music genres and listening preferences—it’s not a ‘smooth’ or ‘warm’ headphone; it’s a precise monitoring earphone that reveals details.

Compared to the Shure SE425, the NM25 offers higher resolution and better ergonomics at a lower price. Compared to the more expensive Sony IER-M7, it falls a bit short in low-end thickness and midrange richness but still provides surprisingly good monitoring value for just over half the cost.

Approach it as a monitoring tool or critical listening reference—it’s best suited for dedicated listening sessions rather than casual all-day wear.