Abyss Diana TC Signature vs HIFIMAN Susvara

Both are planar magnetic open-back headphones.

The Diana TC Signature is 81 g lighter, at 369 g against 450 g.

The Susvara needs 7 dB more power to reach a loud 110 dB peak, so it asks more of the amplifier.

The Diana TC Signature lists for $1,005 less.

$4,995

$6,000

Side by side

Diana TC SignatureSusvaraDifference

Diana TC SignatureSusvara

Driver: Planar magnetic; Planar magnetic
Diaphragm: Ultra-thin planar diaphragm with EBR (Extended Bass Response); thickness unpublished; Nanometer Grade film under 1 micrometer thick, gold-coated conductor
Driver size: 63 mm; Not published
Enclosure: Open-back; Open-back
Weight: 369 g; 450 g; Diana TC Signature is 81 g lighter
Impedance: 72 ohms; 60 ohms
Sensitivity: 90 dB/mW; 83 dB
Power for 110 dB: 100 mW, 2.68 V; 501 mW, 5.48 V; Susvara needs 7 dB more
Drive: Moderate drive; Demanding
Frequency response: 2 Hz – 58 kHz; 6 Hz – 75 kHz
Made in: USA (Buffalo, New York); China
Released: 2026; 2017
List price: $4,995; $6,000; Diana TC Signature is $1,005 less
Materials: Aluminium Leather Glass; Wood Leather Engineered films; Both use 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 $6,000

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