Abyss
AB-1266 Phi TC
Introduced 2019$5,995 MSRP
The AB-1266 Phi TC is Abyss Headphones' open-back planar magnetic flagship, hand-built in the USA by JPS Labs with a CNC-machined all-aluminum frame finished in a two-tone polymer-ceramic coating. It succeeded the original AB-1266 Phi with newly designed 66 mm planar drivers, credited by the manufacturer as delivering the highest resolution of any headphone it has made.
MSRP
$5,995
Used market · Excellent
$3,800
-37% vs MSRP
as of Sep 1, 2026MSRP to used market
From $3,500 at launch to $3,800 today.
Specifications
- Build
- CNC-machined all-aluminum frame with two-tone black polymer-ceramic finish, low-carbon-steel front baffle with integrated resonance control, lambskin leather or synthetic earpads
- Weight
- 640 g (620 g per Woo Audio's current listing); independent measurement incl. cable and 1/4 in connector: 646 g
- Packages
- Standard/Lite ($4,995-$5,995) includes cloth pouch; Deluxe and Complete packages ($5,995-$8,595+) add a wooden box, leather case, and premium Superconductor cable
- Warranty
- 10-year private warranty when purchased directly from Abyss
- Impedance
- 50 ohms nominal per official/Woo Audio/AudioKey Reviews; independent lab measurement (Hi-Fi News) found ~42 ohms nearly flat 20 Hz-20 kHz
- Distortion
- Average 0.03% THD (manufacturer); AudioKey Reviews cites <0.2% 20-20kHz, average <0.035%
- Driver size
- 66 mm
- Driver type
- Patented proprietary single-sided planar magnetic transducer, open-back design with foamed-aluminum acoustic backplate
- Sensitivity
- 88 dB/mW (manufacturer spec); independent lab measured 98.4 dB SPL at 1 kHz for 1 Vrms input
- Cable connectors
- Dual 3-pin mini-XLR at earcups; standard cable is balanced 8 ft (2.4 m) 4-pin XLR with 1/4 in (6.3 mm) adapter, custom-made by JPS Labs; longer lengths and Superconductor HP cable upgrades available
- Frequency response
- 5 Hz - 45 kHz per official spec sheet; other official listings/retailers cite 5 Hz - 30 kHz or 5 Hz - 35 kHz
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