Product Strengths

• The M23's build quality feels solid and elegant, with impressive small design details
• The sound is striking in its purity and clarity
• It offers up to three levels of gain, switchable on the back panel, to best fit the system
• It provides a clear sound without sounding hard
• It features Purifi Eigentakt Class D amplification, which provides virtually unmeasurable distortion levels

Product Considerations

• The bass is clean but may be perceived as a little on the cool side and not as 'wompy-sounding'
• The M23 is not a forgiving amplifier that makes everything sound sweet and wonderful—it's not for those seeking a soft and mellow sound
• Bridging with speakers below 5 or 6 ohms is not recommended, as the amp will current limit and potentially shut down
• The reviewer found ergonomical challenges using fancy speaker cables in bridged mode due to wide terminal spacing
• The capacitive touch power button can accidentally trigger

Comparisons (according to reviewers)

• Vs Bel Canto C6i: The M23 offered a layer of refinement and better reproduction of the recording space
• Vs Pass XA25: The M23 had more transparent sound and detail, especially in the treble and upper mids, but lacked the organic quality of the XA25
• Vs HiFi Rose RS 520: The M23 sounded cleaner and had better separation/depth, HiFi Rose seemed to have an EQ built-in, emphasizing midrange and bass
• Vs NAD C298: The M23 is more neutral, deals with decay more naturally, and has better casework, making it look high-end
• Vs Anthem M1 monoblock amplifiers: The M23 was slightly more transparent throughout the entire frequency range
• Vs Bryston 4B 3: The Bryston had more grunt but the M23 is more neutral

Takeaway: The NAD M23 is a powerful and precise amplifier that delivers clean and clear sound, making it a great choice for audiophiles who want to hear their music as accurately as possible. It is especially well-suited for those looking to build a high-end system around a quality preamp or DAC.

Product Strengths

• Delivers ample, clean, and dynamic power to all channels, ensuring speakers reach their full potential
• Designed by John Curl, featuring Class A/AB circuitry for a balance of warmth, richness, efficiency, and punch
• Pleasing sound for dialogue and music, with very high-quality and detail
• Versatile, suitable for both movies and music, with a low noise floor for quiet passages and great transparency—that doesn't color the sound
• Built to last, with high-quality internal components
• Signal-sensing power-on mode can be fussy and may require adjustment

Product Considerations

• Super heavy and large, potentially requiring rearranging a system or dedicated rack space
• Only available in anodized black

Comparisons (according to reviewers)

• The A52 Plus has bigger parts and bigger power than the Outlaw Model 5000, including balanced XLR connections
• A52 Plus is the 'teenager' compared to the elder Parasound A51
• Parasound A52+ sounds better, is more accurate, and more powerful than the Denon receiver's amplifier section

Takeaway: The Parasound A52+ Halo is a versatile and powerful amplifier that delivers clean, dynamic sound for both home theater and music systems, with a build quality designed to last. This is a worthy investment for audiophiles and home theater enthusiasts who seek high-quality audio performance.

Product Strengths

• Exceptionally transparent sound output quality
• Exceptionally powerful, capable of outputting 500W into a 4-Ohm load
• Delivers a remarkably clean, transparent sound with very little noise or distortion
• The amplifier's ability to reproduce bass is awe-inspiring and delivers deep, powerful bass without distortion
• Runs cool and weighs very little for its sound output, making it easy to move around

Product Considerations

• Options can be a little pricy, such as the 12v trigger and RCA inputs
• The Starkrimson Stereo Ultra may lead to further system upgrades
• Depending on your sources, the Starkrimson Stereo Ultra will play exactly what you feed it, good or bad, and if your source components are slow, the Starkrimson Stereo Ultra will not speed them up
• Power on only after all connections are properly made, including the power cord, analog inputs, and speaker outputs, and wait five minutes after powering it off before removing any of the connections

Comparisons (according to reviewers)

• Compared to the Krell S550i integrated amp, the Starkrimson Stereo Ultra showed a much faster and finer resolution of the upper frequencies of the human voice and a far greater ability to play more of the microdetails of a recording

Takeaway: The Starkrimson amplifier is well-built and provides a level of speed and transparency to hifi music that makes listening to music very fun. Its GaN modules can be upgraded and it is available in several configurations.

Product Strengths

• A lovely, lush sounding performance that's hard to dislike and sounds smooth but far from lifeless, delivering high levels of detail in a cohesive and musical manner
• A sympathetic performer, it prefers to play to its inferior partnering equipment's strengths than overly expose their weaknesses, as many hifi audio examples tend to do
• It can cater for a wide range of headphones and connections and it is a benchmark product that's highly recommended
• Zero musical flaws to report and is nearly perfect in execution
• A stunning design to the eye and ear, it is overall a wonderful addition for the perfectionist who wants the very best performance at home or even in the studio

Product Considerations

• The volume control operation lacks linearity, making it hard to make subtle changes in level
• No input selector, so one should only connect one type at once
• On some samples, the volume control is loose and wiggles in its chassis housing
• The octal AC socket is a bit of an odd choice, considering most users might prefer IEC
• The depth, snap and weight of the low end was dynamic and exciting on some recordings and less than stellar on others

Comparisons (according to reviewers)

• Vs Musical Fidelity M1 HPA—the MHA200 has a lush warmness to the music that brings strings to life in a way that makes the M1 HPA sound somewhat sterile in comparison
• Vs EAR Yoshino HP-4 reference—the MHA200 was a touch brighter than the reference, though only slightly

Takeaway: The MHA200 is an enjoyable product with a rich, balanced, and powerful sound, that's more forgiving than most rivals and can be enjoyed for years to come. This headphone amp is perfect for personal listening, design, and operation that will work its magic.

Product Strengths

• Excellent build quality
• Clean and clear sound delivery
• Wide and precise soundstage with astounding bass power that's remarkably tight and tuneful
• Speakers can sound as if they're coming from outside the room, creating a holographic soundstage
• The S300+ can power basically any speaker

Product Considerations

• Runs hot, especially in high bias mode
• Somewhat heightened noise floor that presents as a light 'hiss'
• Bright power LED can be distracting in a dark room
• High gain may not be suitable for high sensitivity speakers
• Lacks any kind of volume control

Comparisons (according to reviewers)

• Vs Jadis Orchestra Reference—the S300+ wins in clarity, soundstage, instrument separation, and distortion level
• Vs Burson Funk—the S300+ sounds far cleaner, more detailed, and has better dynamics, resolution, and transparency
• Vs Cyrus One Cast—the S300+ sounds far more controlled, more dynamic, and punchy; the bass is tighter; the treble is crisp and airy; and the midrange is sweeter and more vivid

Takeaway: The KECES S300+ is a well-built and powerful amplifier that delivers a clean, detailed, and engaging sound for a variety of speakers. It is worth a try for those seeking a top-performing amplifier.