General Information
HYMALAYA Upgrade Program
Reduced THD, Significantly Reduced Noise, and Improved stability. Only available in the EU
https://store.hifiman.com/index.php/hymalaya-upgrade-program.html
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HYMALAYA Upgrade Program
Reduced THD, Significantly Reduced Noise, and Improved stability. Only available in the EU
https://store.hifiman.com/index.php/hymalaya-upgrade-program.html
.
Latest reviews
The Hifiman Hymalaya DAC module
Hifiman is a brand primarily recognized for its extensive selection of planar magnetic headphones; however, it also produces high-quality electronic components, such as the EF400 and the Serenade DAC/amps. What sets Hifiman apart from many competitors is its proprietary R2R DAC module, known as the “Hymalaya,” which is utilized instead of conventional D/S DAC chips. This module is currently in its second generation.
The Hymalaya DAC module is essentially a compact R2R DAC constructed from a significant number of discrete resistors, each with a precision of 0.01%. The second generation of this module features a new FPGA that offers enhanced computing capabilities compared to its predecessor. This FPGA operates with firmware that incorporates a new algorithm, resulting in improved accuracy and a 16% reduction in power consumption relative to the first generation. Additionally, it is designed with twice the number of resistor arrays compared to the initial version, leading to an overall efficiency increase of 20%.
The Hymalaya upgrade program
The second generation of the Hymalaya Pro module is available in three distinct versions: Pro Gold, Pro Silver, and LE, ranked from highest to lowest in terms of measured total harmonic distortion (THD) and dynamic range. The LE version is utilized in the EF500 DAC/amp, the Pro Silver is found in the EF600 and the Serenade, while the Pro Gold is designated for the flagship model, the EF1000.
Hifiman has introduced an upgrade program specifically for the Serenade and EF400 models, available exclusively to customers in Europe. Owners of these devices can send them to Hifiman for an upgrade to their preferred Hymalaya modules, after which the units will be returned with an extended one-year warranty.
The upgrade options include enhancing the Pro Silver modules of the Serenade to Pro Gold for $149, and upgrading the first generation modules of the EF400 to Pro Silver for $149, or to Pro Gold for $299.
A DIY adventure
Disclaimer: Hifiman does not officially support the DIY installation of the Hymalaya modules; the only authorized method for upgrading is to send your device to the company.
In summary, after determining that the Hymalaya DAC modules of the Hifiman Serenade could be exchanged without soldering, I persuaded Hifiman of my capability to undertake the upgrade independently. This approach was essential for conducting a valid comparison, as sending the Serenade for the upgrade and awaiting its return would take approximately a month, a duration sufficient to diminish any acoustic memory.
Since this process is not officially supported by Hifiman, I will refrain from providing a comprehensive description. It is worth noting that accessing the interior of the Serenade and removing the circuit board can be quite challenging. While individuals with the necessary skills and caution may succeed, there remains a risk of damaging the board or severing a connector cable.
Once the internal components of the Serenade are removed, replacing the two DAC modules is relatively straightforward, as they are connected to the main board without solder, similar to socketed op-amps. The only requirement is to remove the security screw from each module and then replace it, ensuring that the small indicator dot's color matches. After reassembling everything, the task is complete.
The EF400 case
The Hifiman EF400 is notably straightforward to disassemble, yet upgrading it presents significant challenges. The first-generation Hymalaya module is designed to be socketed to the board, allowing for easy removal. In contrast, the installation of the Pro modules necessitates the removal of the existing sockets and the soldering of four new ones (or the modules directly) at the designated locations shown in the accompanying photograph. Consequently, I was unable to carry out the upgrade and assess the sound quality.
Nevertheless, based on the sonic enhancements that the Pro Gold Hifiman Hymalaya modules provided to the Serenade, I am confident that upgrading the considerably less advanced first-generation modules of the EF400 would result in even more substantial improvements in sound quality.
The methodology
It is evident from the aforementioned upgrade procedure that conducting a side-by-side comparison or A/B testing is not feasible.
My approach involved using the Serenade for several days to familiarize myself with its sound signature. On the designated day, I attentively listened to a carefully curated selection of well-known tracks and documented my observations. Subsequently, I swapped the modules and repeated the listening process immediately. Finally, I dedicated a few more days to enjoying leisure listening with the Serenade and the newly installed modules.
For the purpose of comparative evaluation, I utilized the Hifiman HE1000 Stealth headphones paired with a Lavricables upgraded cable.
Audio stuff
The Hifiman Serenade is a remarkable DAC/amp that stands out for its exceptional sound quality, making it one of my preferred choices. It seamlessly blends a natural and organic timbre with impressive technical performance and transparency for an R-2R DAC. The sound profile is reminiscent of analog systems, rich in musicality and devoid of any digital artifacts. Its melodious and engaging nature exemplifies the distinctive R-2R sound signature while maintaining high technical standards.
Replacing the Pro Silver modules with the Pro Gold does not result in drastic changes; instead, it offers a series of subtle yet noticeable enhancements that collectively elevate the overall audio experience.
One notable improvement is the increased silence. In the already quiet Serenade, the music's background becomes even darker, allowing the most intricate details to surface naturally, significantly enhancing the sense of realism. However, it is important to note that using overly sensitive headphones may reveal a slight hum from the transformer.
The enhanced version of the Serenade exhibits increased transparency, precision, clarity, and definition. It delivers a more refined and resolving sound, allowing listeners to delve deeper into the recording. The soundstage broadens, becoming more holographic and immersive, with additional layers of depth and improved imaging accuracy.
These technical improvements are achieved without compromising the remarkable timbral realism and the highly regarded musicality of the Hifiman Serenade. The sound maintains its organic and analog-like qualities, ensuring that the Pro Gold Hifiman Hymalaya modules do not impart a clinical tone or any form of digital artificiality. On the contrary, the Serenade becomes even more convincing and lifelike following the upgrade.
One notable consequence of switching to the Pro Gold modules is a slight reduction in sound density or note weight, as one might describe it. The textures may appear somewhat drier, losing a degree of their elasticity and lushness, although these differences are relatively minor. Nevertheless, for those who prioritize these attributes in their listening experience and prefer a denser, more full-bodied sound, it may be advisable to remain with the Pro Silver modules.
Conclusion
The Hifiman Himalaya upgrade program presents an affordable and cost effective way to improve the audio quality of the Hifiman Serenade and the EF400. By replacing the Pro Silver modules with Pro Gold modules, the Serenade achieves the pinnacle of its technical capabilities while maintaining, if not enhancing, its natural and organic sound. If you reside within the EU, where this service is offered, do not hesitate to take advantage of this exceptional chance to elevate the sonic performance of your Serenade or EF400.
-------------------------------------------------------------------------------
The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. You can learn about the Hifiman Hymalaya upgrade program and the prices by clicking here.
Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
.
Hifiman is a brand primarily recognized for its extensive selection of planar magnetic headphones; however, it also produces high-quality electronic components, such as the EF400 and the Serenade DAC/amps. What sets Hifiman apart from many competitors is its proprietary R2R DAC module, known as the “Hymalaya,” which is utilized instead of conventional D/S DAC chips. This module is currently in its second generation.
The Hymalaya DAC module is essentially a compact R2R DAC constructed from a significant number of discrete resistors, each with a precision of 0.01%. The second generation of this module features a new FPGA that offers enhanced computing capabilities compared to its predecessor. This FPGA operates with firmware that incorporates a new algorithm, resulting in improved accuracy and a 16% reduction in power consumption relative to the first generation. Additionally, it is designed with twice the number of resistor arrays compared to the initial version, leading to an overall efficiency increase of 20%.
The Hymalaya upgrade program
The second generation of the Hymalaya Pro module is available in three distinct versions: Pro Gold, Pro Silver, and LE, ranked from highest to lowest in terms of measured total harmonic distortion (THD) and dynamic range. The LE version is utilized in the EF500 DAC/amp, the Pro Silver is found in the EF600 and the Serenade, while the Pro Gold is designated for the flagship model, the EF1000.
Hifiman has introduced an upgrade program specifically for the Serenade and EF400 models, available exclusively to customers in Europe. Owners of these devices can send them to Hifiman for an upgrade to their preferred Hymalaya modules, after which the units will be returned with an extended one-year warranty.
The upgrade options include enhancing the Pro Silver modules of the Serenade to Pro Gold for $149, and upgrading the first generation modules of the EF400 to Pro Silver for $149, or to Pro Gold for $299.
A DIY adventure
Disclaimer: Hifiman does not officially support the DIY installation of the Hymalaya modules; the only authorized method for upgrading is to send your device to the company.
In summary, after determining that the Hymalaya DAC modules of the Hifiman Serenade could be exchanged without soldering, I persuaded Hifiman of my capability to undertake the upgrade independently. This approach was essential for conducting a valid comparison, as sending the Serenade for the upgrade and awaiting its return would take approximately a month, a duration sufficient to diminish any acoustic memory.
Since this process is not officially supported by Hifiman, I will refrain from providing a comprehensive description. It is worth noting that accessing the interior of the Serenade and removing the circuit board can be quite challenging. While individuals with the necessary skills and caution may succeed, there remains a risk of damaging the board or severing a connector cable.
Once the internal components of the Serenade are removed, replacing the two DAC modules is relatively straightforward, as they are connected to the main board without solder, similar to socketed op-amps. The only requirement is to remove the security screw from each module and then replace it, ensuring that the small indicator dot's color matches. After reassembling everything, the task is complete.
The EF400 case
The Hifiman EF400 is notably straightforward to disassemble, yet upgrading it presents significant challenges. The first-generation Hymalaya module is designed to be socketed to the board, allowing for easy removal. In contrast, the installation of the Pro modules necessitates the removal of the existing sockets and the soldering of four new ones (or the modules directly) at the designated locations shown in the accompanying photograph. Consequently, I was unable to carry out the upgrade and assess the sound quality.
Nevertheless, based on the sonic enhancements that the Pro Gold Hifiman Hymalaya modules provided to the Serenade, I am confident that upgrading the considerably less advanced first-generation modules of the EF400 would result in even more substantial improvements in sound quality.
The methodology
It is evident from the aforementioned upgrade procedure that conducting a side-by-side comparison or A/B testing is not feasible.
My approach involved using the Serenade for several days to familiarize myself with its sound signature. On the designated day, I attentively listened to a carefully curated selection of well-known tracks and documented my observations. Subsequently, I swapped the modules and repeated the listening process immediately. Finally, I dedicated a few more days to enjoying leisure listening with the Serenade and the newly installed modules.
For the purpose of comparative evaluation, I utilized the Hifiman HE1000 Stealth headphones paired with a Lavricables upgraded cable.
Audio stuff
The Hifiman Serenade is a remarkable DAC/amp that stands out for its exceptional sound quality, making it one of my preferred choices. It seamlessly blends a natural and organic timbre with impressive technical performance and transparency for an R-2R DAC. The sound profile is reminiscent of analog systems, rich in musicality and devoid of any digital artifacts. Its melodious and engaging nature exemplifies the distinctive R-2R sound signature while maintaining high technical standards.
Replacing the Pro Silver modules with the Pro Gold does not result in drastic changes; instead, it offers a series of subtle yet noticeable enhancements that collectively elevate the overall audio experience.
One notable improvement is the increased silence. In the already quiet Serenade, the music's background becomes even darker, allowing the most intricate details to surface naturally, significantly enhancing the sense of realism. However, it is important to note that using overly sensitive headphones may reveal a slight hum from the transformer.
The enhanced version of the Serenade exhibits increased transparency, precision, clarity, and definition. It delivers a more refined and resolving sound, allowing listeners to delve deeper into the recording. The soundstage broadens, becoming more holographic and immersive, with additional layers of depth and improved imaging accuracy.
These technical improvements are achieved without compromising the remarkable timbral realism and the highly regarded musicality of the Hifiman Serenade. The sound maintains its organic and analog-like qualities, ensuring that the Pro Gold Hifiman Hymalaya modules do not impart a clinical tone or any form of digital artificiality. On the contrary, the Serenade becomes even more convincing and lifelike following the upgrade.
One notable consequence of switching to the Pro Gold modules is a slight reduction in sound density or note weight, as one might describe it. The textures may appear somewhat drier, losing a degree of their elasticity and lushness, although these differences are relatively minor. Nevertheless, for those who prioritize these attributes in their listening experience and prefer a denser, more full-bodied sound, it may be advisable to remain with the Pro Silver modules.
Conclusion
The Hifiman Himalaya upgrade program presents an affordable and cost effective way to improve the audio quality of the Hifiman Serenade and the EF400. By replacing the Pro Silver modules with Pro Gold modules, the Serenade achieves the pinnacle of its technical capabilities while maintaining, if not enhancing, its natural and organic sound. If you reside within the EU, where this service is offered, do not hesitate to take advantage of this exceptional chance to elevate the sonic performance of your Serenade or EF400.
-------------------------------------------------------------------------------
The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. You can learn about the Hifiman Hymalaya upgrade program and the prices by clicking here.
Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
.
