News from Flux Labs courtesy of their Facebook:
Dear friends!
For more than 10 months our country has been at war, but we are constantly feeling your support and we are thankful for your warm heartfelt wishes, for which we are very grateful. Inspired by the latest events and your full support, our team has been working all along and had something special in store for you.
Our first yearly announcement is dedicated to our close friends and fans. We are glad to show you for the very first time the FA-10 Limited which is a massively upgraded version of the regular FA-10 headphone amplifier, coming in limited numbers.
Although there are plenty of internal upgrades, these are the most important ones:
• Modernized printed circuit boards for the installation of MUNDORF MLYTIC AG power capacitors. This change leads to a clearer sound that’s quite a lot more dynamic
• All audio circuits are now using ELNA Silmic II electrolytic capacitors
• We upgraded the circuitry of the analog input and output stages, for a more linear tonal balance across the board
• The feedback circuit has been redesigned for a fuller-bodied sound, that’s more transparent than ever before
• Internal wiring uses the highest-quality and purest copper wire available today, more exactly the Neotech ultra-pure UPOCC wire, that had a massive positive effect on the entirety of the frequency response, getting a cleaner and weightier sound.
Each buyer of the Limited Edition will be receiving a memorable gift - a hand-crafted bracelet from the last steel batch made at the Azovstal plant in the beautiful city of Mariupol, which was completely destroyed by the invading troops. The bracelet is a symbol of unity and invincibility of the Ukrainian people.
You can be part of our history, helping us doing what we love to do the most by getting an FA-10 Limited Edition that can be ordered right now.
Edit:
Follow up from Flux Labs:
“In view of the incoming questions related to the differences between FA-10 Limited and FA-10, we publish a separate post with clarification.
It is important to understand that the FA-10 Limited is not just an amplifier with higher quality and more expensive capacitors installed. The Limited is a significantly redesigned and improved unit specifically in terms of circuitry. The higher quality capacitors and wiring are simply better at realizing the potential of all the circuit improvements.
The circuitry of the amplifier is still equipped with the JFET input as in the regular model FA-10, but the circuit at the input of the amplifier was completely redesigned, which allowed getting a more even tonal balance and higher detail over the whole frequency range. The output stage was also changed, in this case, bipolar transistors designed specifically for high-end audio (NJW0281G and NJW0302G) are used.
But how can we generally describe the sound of FA-10 Limited and how we position this amplifier?
It's the most musical amplifier in the FA-10 lineup, and you can hear it from the very first notes. At the same time, it is the most detailed, transparent, and dynamic. The sound is the most harmonious and natural. To summarize, we want to note that FA-10 Limited plays on the field of High-End solutions. The number of produced amplifiers will be extremely limited due to the complexity of applying such solutions in devices of the average price category, but for the sake of fans of this model, we decided that we must release such a modification of the device!
The amplifier is as versatile as possible and is suitable for both undemanding models of headphones and the most complex loads, such as Susvara or Abyss.”
https://fluxlab-acoustics.com/product/fa-10-limited-class-a-headphone-amplifier/