MF-1 Headphones by MX RAY Audio Ent 50mm Beryllium Neo + DAC/AMP Fiio KA13 4.4mm

The MF-1  by  MX RAY Audio Ent.   Reviews:https://www.youtube.com/watch?v=Fmjt6EyTGL8https://www.youtube.com/watch?v=gbTFKTmE0zc&t=8shttps://www.youtube.com/watch?v=rXIu7dscCVg The MX RAY Audio - MF-1 headphones feature a 50mm Beryllium and Neodymium driver individually tested and burned in for 30 hours. Leveraging TTS technology, they offer rich sound, emphasizing deep bass, clear vocals, and crisp high notes. They work efficiently with low-power devices due to their low impedance and cover a wide frequency range (4Hz to 23kHz). Weighing 320 grams, they ensure comfort with soft ear cushions and include a 5ft anti-tangle cable equipped with a 4.4mm Pentaconn adapter. Each MF-1 comes with a carrying case, 4.4mm Pentaconn to 2x3.5mm audio cable, USB-C DAC/amp Fiio KA13, USB A to C adapter, and a tool kit, full support by the MX RAY Audio Ent. The headphones integrate dual 3.5mm audiophile-grade terminals alongside QDC interface points.  These terminals accommodate a spectrum of dual 3.5mm-terminated cables, facilitating connections to balanced 4 pin XLR, 1/4" (6.2mm), 2.5mm, 4.4mm Pentaconn, and single-ended 1/8" (3.5mm) interfaces. The QDC interface extends compatibility to an array of Bluetooth peripherals and a multitude of specialized QDC cables encompassing both game-centric microphone-equipped variants and audiophile-grade, balanced or single-ended iterations. The MF-1 is equipped with a precision-engineered tuning port, encompassing 6 micro vent apertures and a modifiable flap mechanism. This allows for 3 primary acoustic configurations: Open, Mid-Range, and Closed.  While the MF-1 is pre-fitted with a 135mm ear-pad set, prioritizing an immersive experience, supplementary ear-pads of 125mm and 115mm dimensions are available, facilitating two additional granular tuning phases for a more precision-driven acoustic experience. With the MF-1's swappable driver suite, cable and Bluetooth connectivity, MX RAY stands set to revolutionize the auditory landscape.The MF-1 by MX RAY Audio Ent. is the culmination of a huge amount of meticulous research and decision-making, striving for the most accurate and stage-like representation of audio.  The balance of frequency response, sound stage, and sensation through the pad is what we consider to be the correct balance. We have tested a wide variety of music, movies, and games through the MF-1, and we are confident that each are represented accurately to how they might be heard on a stage or in person. Included in the packagesMF-1135mm non-perforated padsCase4.4mm -> 2x 3.5mm cable4.4 to 3.5 converter3.5 to 1/4" converter FiiO KA13 DAC/amp with stock USB C CableUSB-A to C adapterUSB C premium Cable for DAC USB C to Apple Cable for DAC Repair kit Filter Kit Wrap strip for Pads to preserve pad shape Storage pouchesSpecifications:- MXB 50mm beryllium-coated dynamic driver- 4Hz - 23KHz- 26Ω impedance- 320g weight- 5ft braided cable- 135mm ear cushions - On the back of each ear cup is our adjustable vent system. It allows you to adjust the amount of venting. The MF-1 is considered a semi-open design. Please try listening with the vents adjusted in different positions. The closed vents drift the tonality towards a closed back feel and the open vents drift the tonality towards a more open feel. - Optionally are available our perforated 135mm pads alongside the standard ones. This can be combined with the vent adjustment as well for a number of different tonalities. The perforated pads open the sound stage.- The filter kit is for the back of the driver in the center. The options are. No filter, Y1 Filter ( production ), Y2 Filter. Y3 (by stacking Y1 and Y2) The bass energy reduces as the filter thickens is increased. No filter more bass, Y2 or Y3 less bass, more mids and highs.- Included are all the tools necessary to completely disassemble and reassemble the MF-1.  We plan to have all parts available to purchase online separately, to ensure that it is easy to keep them in good shape over time.  We intend to keep supporting our headphones with all the parts.- The headband is made of work-hardening stainless steel.  This means that the tension is infinitely adjustable. You can bend and shape the headband to best fit your preferences. There is a certain tension that is ideal - if you remove the pads, push the housings to their lowest adjustment point, and hold the headphone by the top-center of the headband, there should be about 1" between the bottoms of the two housings.  The tension does cause a shift in the response, which is why we have this guideline, but ultimately, it is possible to freely adjust to your preferences.The 135mm perforated pads open up the sound stage and take the bass shelf down about 2dB, the 125mm dynamic pads will sound more like a closed back headphone specially with the vents closed. The 135mm dynamic pads that the MF-1s come with, strike the balance between the 125mm dynamic and 135mm perforated. The 135mm dynamic pads offer a wide sound stage yet with a dynamic character.We also offer a 2m gamer cable pack with a boom mike and swapable tips to 3.5mm  or 4.4mm.The MF-1 offers a lush full spectrum experience that is immersive at any volume level. You can further modulate the sound using the vent adjustments or tweaking the headband tension. The Beryllium drivers run clear and responsive driven by N52 magnets and using core free coils.We recommend the 4.4mm balanced connection for full device side channel separation. The premium braided cable preserves unimpeded power delivery to your MF-1s where the headphone then takes over dynamically the channel cross talk.The package comes with a capable USB DAC/Amp that delivers over 600 mW / side @26 Ohms on the 4.4mm balanced output when Desktop Mode is activated. Dual Cirrus Logic CS43131 DACs and dual Op-Amps SGM8262, with an impedance range of 1-300 Ohms drive the MF-1s at a comfortable 26:1 impedance ratio. Definitely a good starter or portable option.Zoltan, Chief Engineer at MX RAY Audio Ent.