Heaven 11 Spartan Amplifier Review

October 9, 2025 Comments Off on Heaven 11 Spartan Amplifier Review

Aurender AP20 reference all-in-one music server class D integrated amplifier Review

October 8, 2025 Comments Off on Aurender AP20 reference all-in-one music server class D integrated amplifier Review

The AKM 4497 is a circa 2016 32-bit two-channel DAC chip. I have fond memories of enjoying music from CD players and DACs of the early 2000 using AKM chips, and I have found those made by Burr Brown, Analog Devices, Wolfson, etc., all adopted by manufacturers at one time, promising. The ESS chips of late are a different breed as their design is so integrated that manufacturers often take advantage of it and create their consumer products with minimal additional original engineering. The result is various models from manufacturers all sounding similarly. There are exceptions, of course, such as in the case of the Audio Research DAC 9.

On the company’s choice of selecting the AKM 4497 chipset, it is noteworthy that an October 2020 fire at the AKM facility disrupted supplies of the AKM 4499EQ, the latest flagship. Aurender Director Harry Lee offered that, “When we developed the A-series (Analog outputs) about 10 years ago, we had narrowed down our choices to AKM and ESS DAC chips. The decision was primarily made due to sound signature of the AKM chips winning out with our development team. Because this essentially became part of our A-series house sound [on top of the disruption of the 4499EQ chip supply], we decided to stick with the AKM 4497 and push the envelope on getting the very most out of this brand of chip with each new iteration/model.”

NORDOST FREY 2 Power Cord Review

October 8, 2025 Comments Off on NORDOST FREY 2 Power Cord Review

Colibri Acoustic C2 horn hybrid compact loudspeakers $1,100/pair. Review

October 7, 2025 Comments Off on Colibri Acoustic C2 horn hybrid compact loudspeakers $1,100/pair. Review

SMSL DS200 Review

October 7, 2025 Comments Off on SMSL DS200 Review

https://www.headfonia.com/smsl-ds200-review/

The DS200 is one of the more striking budget units SMSL has put out. The cyberpunk look is a first for them, and it immediately sets the LIN.LIN.LIN line apart. It feels like SMSL wanted to aim this sub-brand a little closer to the gaming market. That said, the lack of USB 1.0 support means the DS200 can’t be used with consoles, which limits that angle somewhat.

The finish is classic SMSL with a twist. The sandblasted CNC aluminum chassis has that smooth, slightly grippy feel that reminds me of Apple Macbooks. The tempered-glass front panel adds to that impression, with its clean white LEDs that resemble the device as if it were warped out of a sci-fi movie. The orange accents work surprisingly well with the grey tones of the chassis, giving the DS200 a bit of contrasty personality.

On the front, the layout is tidy. The vertical volume slider is still, in my opinion, the standout, as it’s unusual; however, in practice, I found it fun and satisfying to use. The slider has no steps and feels smooth from bottom to top. I also didn’t encounter any channel imbalance.

Michell Apollo/Muse MM/MC phono preamp Review

October 6, 2025 Comments Off on Michell Apollo/Muse MM/MC phono preamp Review

https://www.hifinews.com/content/michell-apollomuse-mmmc-phono-preamp

Here’s the thing: during my audition of the Apollo I didn’t find one LP that came even close to unsettling its even-handed performance. This phono amp has an uncanny knack of finding the beauty buried in the murky depths of poor recordings, while affecting an ease in capturing absolutely everything to be found in higher-quality pressings.

Seldom have I heard the soft but insistent electronic percussion effects in Lanterns on the Lake’s ‘Lungs Quicken’ [Gracious Tide, Take Me Home; Bella Union BELLAV300] remain quite so prominent. Usually they are something that you hear and then tend to gloss over, but the Apollo refused to let this happen. It will have you rapt, relishing every detail within a recording, while never relaxing its grip on the overall musical message.

BEST Way to soundproof a Room – Before & After Sound Test!

October 6, 2025 Comments Off on BEST Way to soundproof a Room – Before & After Sound Test!

World Premiere Review! Audionet Mach Linestage And Schrödinger Monoblock Amplifier $108,100/pair Review

October 3, 2025 Comments Off on World Premiere Review! Audionet Mach Linestage And Schrödinger Monoblock Amplifier $108,100/pair Review

https://www.enjoythemusic.com/superioraudio/equipment/0925/Audionet_Mach_Linestage_Schrodinger_Monoblock_Amplifier_Review.htm

Here, the floating panel chassis design allows for maximum air flow, offering abundant cooling for the circuit boards and establishing stable air currents throughout. It also employs magnetically and capacitively optimized circuitry, using no ferro-magnetic materials, and implements galvanic isolation by using optical coupling.

The Schrödinger uses the Audionet Ultra Linear Amplifier technology to manage real-time linearization of distortions, is DC coupled, and its massive, gold-plated copper rails deliver the signal to the speaker terminals without loss. It uses two separate power supplies, one for device control and detection, and a second to monitor zero-crossing of mains power, the crucial point where the mains power alternating current signal transitions through the zero voltage level, from positive to negative or vice versa.

Nordost Qbase Reference AC Distribution Unit Review

October 3, 2025 Comments Off on Nordost Qbase Reference AC Distribution Unit Review

What may appear as a simple song structure often presents a far greater challenge for power delivery, exposing hidden complexities that lesser technical solutions blur. This is exactly where a premium power distributor distinguishes itself, and the QBASE Reference never faltered; its power delivery was pure, uncolored, and seemingly limitless, responding instantaneously to shifts in dynamics — swinging with off-beat syncopations, locking into precise rhythmic grids, and melting seamlessly into hypnotic, butter-smooth cadences when called for.

Nordost’s flagship power distributor introduced an unprecedented level of clarity and separation. Instruments and voices emerged with greater individuality and presence, each with its own distinct aura, while the overall presentation retained a fluid, organic togetherness — a high-level summing of inertia, motion, and flow.

Unlike many power distributors, whether entry-level or cost-no-object, the QBASE Reference rises above common limitations. It embodies a Zen-like balance, yet unleashes thunderous sonic energy with absolute authority when called upon — an equilibrium many aspire to, but few ever achieve.

PS Audio Stellar DAC $2199 Review

October 2, 2025 Comments Off on PS Audio Stellar DAC $2199 Review

As much as I enjoyed playing around with filters to endlessly unravel music threads in hopes of discovering something new about old chestnuts, the Stellar DAC is not really made for such interrogations. This is a beautiful sounding DAC, by design. Playing Sasha Matson’s newest album, Fillmore Street, proved to be a splendid way to put the Stellar DAC to the test. This album is full of interesting twists and turns in composition, timing, and melodic themes. Flawlessly recorded, the title track opens the album to give you a taste of what’s to come—orchestral energy with competing instruments propelling the ascending melody line to create tension that ultimately resolves in a languorous swoon reminiscent of Gershwin. The Stellar DAC does an exceptional job of capturing the breadth and dimension of the orchestra, but more importantly, the tone and texture of the instruments sings naturally and without distracting emphasis. I played many, many other artists from a variety of genres, but the overall balance and tonal fulsomeness was sustained in excellent fashion.

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