Abyss AB-1266 Phi Planar Magnetic Headphones


Lite: A cut-down Lite version, featuring a 4 Pin XLR cable with 1/4" Adapter plus protective sleeve, omitting the added extras of the deluxe.

Deluxe: Includes carry bag, 3 Pin XLR cable with 1/4" and 4 Pin XLR Adapters, plus a headphone stand.


  • The Greek symbol Phi φ has many contexts in science and math including magnetic flux and phase, so once we finalized all the incremental improvements made to the original AB-1266 speaker driver, it seemed a fitting suffix to this iconic Abyss model.

    The new verion AB-1266 Phi (AB-1266φ) refines the sonic virtues of Abyss with greater transparency to the source, further improved low freqency impact and resolution, and vocals as alive as can be. More importantly, the AB-1266 Phi will preserve in history one of the finest headphones ever produced.

  • Made in the USA. We machine all aluminum frame components and produce our planer speaker drivers in-house in Western New York. Leather goods such as ear pads, headbands, and carry bags are sewn in California.

    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 finishes, polished metal accents, hand-brushed artistic touches.

    Proprietary planar magnetic transducer design (Patent Pending) 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.

    Padded 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 (no problem with eye glasses). 'Abyss' embroidered logo.

  • Frequency Response: 5 Hz to 28 KHz

    Impedance: 42 ohms nominal (non-reactive)

    Sensitivity: 88 dB Distortion: Less than 1%; Less than 0.2% through ears most sensitive range

    Weight: 620 grams (without cable)