InPoL (Inseguitore Pompa Lineare – Linear Pump Follower) is a system patented by Pathos Acoustics which has enjoyed great success and won many awards.

Inpol devices have a special sonic personality obtainable only by means of this particular circuit design – fully balanced in Class A using a single solid state component in follower configuration, with high current gain and with voltage gain together. The valve amplifier amplifies the input signal voltage and InPol supplies the current to drive the loudspeakers without any further amplification. In this way the signal is entrusted to the valves and becomes a true copy of the original, with all the quality, purity and harmonic content of the original.

This technology allows an increase in the theoretical output in pure Class A of between 25% and 50% together with a low output impedance which is fundamental for the damping factor, and further improved by the double InPoL.

The Abyss AB-1266 Phi TC is the apex of the headphone world.

AB1266 Phi TC is the apex of the headphone world.

Many years of development and research went into the making of what many consider the finest sounding headphone money can buy.

Our ultra-thin patented TC (Total Consciousness) planar speaker drivers make the AB1266 the highest resolution headphones on the planet, allowing you to hear the most subtle nuances within your music in a most natural way.

Our factory applied oven cured ceramic coating in a two tone luxury black color displays a sophisticated look. Larger more comfortable ear pads improve the sound even further, in total taking the TC's acoustic performance to even higher levels of sonic bliss.

From the very first note you will hear musicians and instruments in a whole new way. Voices appear out of nowhere and float around your head. Piano is in front of you to the left, singers in front of your forehead while drums are slightly forward of them. No electronic tricks, simply the natural sounds of the recording coming through striking emotional chords, that's Abyss. AB1266 can convey the power of a huge symphony and the nuances of the quietest sounds in nature, a private concert for one.

• We CNC machine and finish all aluminum frame components, produce our planer speaker drivers, and skillfully assemble the AB1266 Phi TC with US made stainless steel hardware, all within our own facility in Buffalo, New York, USA.
• Chassis consists of left/right side frames and adjustable two piece headband. No plastic parts to break, all components machined from solid aluminum for exceptional strength. Integrated resonance control for minimal added coloration.
• High quality two-tone polymer ceramic finish, the hardest thin film coating in the world.
• Patented planar magnetic transducer design utilizing our very thin, very low mass diaphragm. Effortless dynamics and low level detail retrieval in the bass, mids, and highs with spacious sound outside of your head. A front row listening experience with stunning bass impact no other headphone can provide, like the finest loudspeakers in a private room.
• Matched driver pairs.
• Unique custom made high power neodymium magnets with optimized slot pattern.
• Low carbon steel front baffle with integrated resonance control.
• Unique foamed aluminum sides acoustically tuned to our planar diaphragm for completely open sound.
• High quality soft lambskin ear pads provide comfort and finely tuned acoustics. Magnetically adjustable positioning lets you fine tune acoustics and fit for your music, and you.
• Beautifully made padded French leather headband with head movement isolation properly distributes weight for hours of comfortable wear. Looks are deceiving, these headphones are designed not to clamp your head, but rather float atop and loosely touch your ears. 'ABYSS' embossed logo.
• Serial numbers permanently laser engraved for traceability and collectability.