Abyss Diana TC Signature vs Dan Clark Audio Expanse

Both are planar magnetic open-back headphones.

The Diana TC Signature is 49 g lighter, at 369 g against 418 g.

They need about the same power to reach a loud 110 dB peak, so an amplifier that suits one suits the other.

The Expanse lists for $495 less.

$4,995

Dan Clark AudioExpanse

$4,499.99

Side by side

Diana TC SignatureExpanseDifference

Diana TC SignatureExpanse

Driver: Planar magnetic; Planar magnetic
Diaphragm: Ultra-thin planar diaphragm with EBR (Extended Bass Response); thickness unpublished; 4th-generation v-Planar diaphragm, DCA's largest to date; material not published
Driver size: 63 mm; 76 mm x 51 mm
Enclosure: Open-back; Open-back
Weight: 369 g; 418 g; Diana TC Signature is 49 g lighter
Impedance: 72 ohms; 26 ohms
Sensitivity: 90 dB/mW; ~90 dB/mW
Power for 110 dB: 100 mW, 2.68 V; 100 mW, 1.61 V; About the same
Drive: Moderate drive; Moderate drive
Frequency response: 2 Hz – 58 kHz; Not published
Made in: USA (Buffalo, New York); United States
Released: 2026; 2022
List price: $4,995; $4,499.99; Expanse is $495 less
Materials: Aluminium Leather Glass; Carbon fibre Aluminium Titanium Leather; Both use aluminium, leather

From each maker’s published figures; sources are on each headphone’s page. Power for 110 dB is worked out from sensitivity and impedance.

Each of these has 10 dB or more in reserve above a loud 110 dB peak on both headphones, so one amplifier serves either.

List $4,995

Retailer prices checked 2026-10-21. We may earn a commission on purchases. How this works

List $4,499.99

Retailer prices checked 2026-10-21. We may earn a commission on purchases. How this works