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.

New! ABYSS Diana DZ Luxury Audiophile Headphone

• Made in USA
• We CNC machine and finish the aluminum frame components, produce our own patented planar speaker drivers, and skillfully assemble with care within our own USA facility.
• The thinnest and lightest boutique headphone in the world sculpted from aircraft grade aluminum for incredible strength. Build quality, fit and finish is impeccable, finest in the industry!
• Highest quality leather headband with high-end leathers and soft sporty materials provides a relaxed fit to any head shape. Diana DZ is one of the most comfortable headphones available. Newly developed head sling comfortably contours Diana DZ to the top of your head for a very comfortable fit, perfect for all day use.
• High-tech polymer ceramic finish with custom exotic inlays.
• Large 63 mm patented planar speakers designed specifically for Diana DZ deliver the ABYSS signature sound with spacious soundstage and powerful bass.
• The latest generation Diana ear pads made in-house by ABYSS with head-shaped foam and a 'pillow top' cushion that adapts to the shape of your head for long-term comfort with minimal clamping force (Lambskin leather or VEGAN Ultrasuede).
• Fibonacci side hole pattern optimized for DZ properly tunes the sound while following a natural flow of air.
• Magnetic headband size adjustments with no parts to wear for long-term reliability
• Latest generation Diana headband design twists and flexes in sync with the cushion ear pads to contour to your head shape for a comfortable fitment, even with glasses.
• Choose from various coordinated color combinations
• Custom hard carry case with velvet lined interior fits and protects Diana like a glove
• Open back design allows for a more spacious sound
• Weight 315 grams; 370-385 grams depending on ear pad configuration.
• Impedance 50 ohms
• Sensitivity 92 dB/mw
• Frequency Response 5 Hz-65 KHz
• Includes a high quality headphone cable by JPS Labs with choice of 3.5 mm, 6.3 mm (1/4"), 4 pin XLR or 4.4 mm balanced plug (upgrade Superconductor HP cable may be purchased separately or as part of the Complete package).

• Optional accessories include upgrade JPS Labs Superconductor HP headphone cable set, and ear pad options that offer the ability to customize the sound.

High-performance headphones prefer a compatible high quality portable headphone player or headphone amplifier for best results. Please visit our Electronics section for compatible electronics, or contact us or your ABYSS Dealer about best mates.

For Diana DZ we highly recommend using mating gear from this growing list:Woo Audio TUBE min USB, Eleven Audio K DAC, Eleven Audio Broadway Balanced amp.

Note: Vegan version comes with cactus leather headband and UltraSuede sling and ear pads. These ear pads have a subtle softening of upper frequencies. Suggest the stock hybrid lambskin/Ultrasuede ear pads if you prefer to maximize detail retrieval. You can also order additional Diana magnetic ear pads including bass ported versions at any time to tailor the sound.