Knot FS
Knot FS
Description
KnØt is Hapa Audio’s Tour de Force for design and aesthetic. Using the same high-quality parts as with our other designs we managed to dramatically improve on sound quality and performance. How? One word: Geometry. More specifically, the most advanced geometry ever implemented in a headphone cable.

Utilizing a new geometry that we specifically designed for a balanced signal, KnØt takes advantage of our understanding of field induction to drastically improve signal transmission. In order to achieve the incredibly complex geometry, we had to start from scratch and create a new method for making this cable. A feat that required not only new tools (that we had to envision and build ourselves), but also required a high degree of technical proficiency in the art of hand crafting cables.
βeta-Sine (Balanced Sinusoidal Isolated NEtwork)
Unlike a single-ended signal, a dual differential signal (otherwise known as a ‘balanced’ signal) sends the audio signal in original phase down one pathway and an inverted phase signal down the other. When the signal reaches the earphone any common mode noise is naturally canceled out at the driver leaving a cleaner signal transfer and since the driver is being driven from both ends the control of the driver is drastically improved. This brilliant design is becoming more and more common in headphone amplifiers. It is within this balanced environment where our new geometry thrives.


Thinking in 3 dimensions + time:
In order to truly understand β-Sine geometry, one must understand the design parameters we required in order to improve on our other geometries. First, the design needed to be lightweight for user comfort and portability. Second, it needs to meet or exceed DCSG in noise rejection and signal transfer. Third, left and right channels inductive fields need to be isolated from each other to reduce crosstalk. And fourth, time-domain for signal arrival needs to exceed that of our previous designs.

β-Sine utilizes a sinusoidal geometry wherein 4 separate leads are woven in the shape of a sine wave that propagates on the interior of the cable for each channel (4 per channel, 8 leads in total). This sinusoidal geometry allows for a constant distance between phase original pathway and phase inverted pathway through the length of the cable. This inductive interplay allows for an ideal transmission for a balanced signal, while simultaneously segregating the left channel from the right.
The result of this carefully crafted geometry:
- A cable with the most accurate phase delivery of any cable on the market, a cable that is incredibly lightweight.
- A cable that is not only flexible along its entire length.
- A cable that can be stretched significantly, taking the stress off of the connectors and delicate Angel Hair litz we utilize in the design.


Because we utilize lightweight nylon as the backbone of this geometry the cable feels less like an anchored tether and more like a natural extension from your system to your ears. Its lightweight design, flexibility, and elasticity are incredible. In the end, you are left with a cable that enhances every facet of sound quality in ways most would not expect a cable to be able to do, without the added bulk.
Termination Options:
Whether you’re using a full-sized 4 pin XLR or a portable format such as a 4.4 mm Pentaconn connector, KnØt is crafted to accommodate every balanced option available. We have created two different termination geometries specifically to accommodate large and small barrels.


How to order:
KnØt is 100% custom-made by our team. Each project time will be based on the options that are chosen. Please fill out our form and we will contact you with a timeframe. If there are any special requests or questions you have about your order please fill them out in the ‘other requests’ section.