Audeze CRBN2 vs Stax SR-X9000
Both are electrostatic open-back headphones.
The SR-X9000 is 48 g lighter, at 432 g against 480 g.
Both run on an electrostatic energizer, so either one works with the amplifiers listed below.
The CRBN2 lists for $205 less.
AudezeCRBN2
$5,995
$6,200
Side by side
CRBN2SR-X9000
- Driver
- Electrostatic
- Electrostatic
- Diaphragm
- Ultra-thin polyimide film with infused carbon nanotubes, push-pull
- Ultra-thin super-engineering plastic film, area 20% larger than SR-009S
- Driver size
- 120 mm x 90 mm
- Not published
- Enclosure
- Open-back
- Open-back
- Weight
- 480 g
- 432 g
- SR-X9000 is 48 g lighter
- Impedance
- Not published
- 145 kilohms
- Sensitivity
- 100 dB, 1 kHz, 100 V RMS
- 100 dB / 100 V r.m.s. at 1 kHz
- Power for 110 dB
- Energizer
- Energizer
- Drive
- Needs an energizer
- Needs an energizer
- Frequency response
- 10 Hz – 40 kHz
- 5 Hz – 42 kHz
- Made in
- USA (California)
- Japan
- Released
- 2024
- 2021
- List price
- $5,995
- $6,200
- CRBN2 is $205 less
- Materials
- Carbon fibreMagnesiumStainless steelLeatherEngineered films
- AluminiumStainless steelLeather
- Both use stainless steel, 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.
Amplifiers that drive both
How the matching worksEvery electrostatic amplifier in the index drives both.
Where to buy the CRBN2
List $5,995
Retailer prices checked 2026-10-21. We may earn a commission on purchases. How this works
Where to buy the SR-X9000
List $6,200
Retailer prices checked 2026-10-21. We may earn a commission on purchases. How this works