Audeze CRBN2 vs Stax SR-009S
Both are electrostatic open-back headphones.
The SR-009S is 39 g lighter, at 441 g against 480 g.
Both run on an electrostatic energizer, so either one works with the amplifiers listed below.
The SR-009S lists for $1,450 less.
AudezeCRBN2
$5,995
$4,545
Side by side
CRBN2SR-009S
- Driver
- Electrostatic
- Electrostatic
- Diaphragm
- Ultra-thin polyimide film with infused carbon nanotubes, push-pull
- Ultra-thin super-engineering plastic film
- Driver size
- 120 mm x 90 mm
- Not published
- Enclosure
- Open-back
- Open-back
- Weight
- 480 g
- 441 g
- SR-009S is 39 g lighter
- Impedance
- Not published
- 145 kilohms
- Sensitivity
- 100 dB, 1 kHz, 100 V RMS
- 101 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
- 2018
- List price
- $5,995
- $4,545
- SR-009S is $1,450 less
- Materials
- Carbon fibreMagnesiumStainless steelLeatherEngineered films
- AluminiumLeather
- 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.
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-009S
List $4,545
Retailer prices checked 2026-10-21. We may earn a commission on purchases. How this works