The estimated shipping date is 7 business days.
Please note that the delivery date may be delayed depending on the status of the manufacturer's order.
Heil-type Open-air Headphones
Experience Sound with Your Skin: The Ultimate Frontal Imaging
The SUH2+ is an open-air headphone that defies the limitations of traditional head-fi. By combining a high-speed Piezo-Heil driver with external super tweeters, it solves the "In-Head Localization" problem—the feeling that sound is trapped inside your skull.

The "Skin Sensation" Breakthrough: TAKET’s research reveals that humans perceive the sharp transients of a sound’s onset not just through their ears, but through their skin. The SUH2+ features external super tweeters mounted on the outside of the earcups. By radiating ultrasonic transients toward the skin of your face, it tricks the brain into perceiving a natural, frontal soundstage—exactly like listening to high-end speakers.
Molecular Velocity (Heil-type): The main driver uses a corrugated piezoelectric polymer film that "squeezes" air at the molecular level. Unlike dynamic headphones, which can sound "heavy" or "slow," the SUH2+ offers weightless agility, capturing the strike of a piano key or the breath of a singer with striking realism.

True Open-Air Freedom: The open-back design allows the Heil driver to breathe, eliminating boxy resonance and creating a limitless sense of openness.
Note on Driveability: The SUH2+ includes an internal matching transformer, enabling it to be driven by standard high-quality headphone amplifiers despite its unique piezoelectric design.
When SUH2+ is used alone
|
Frequency Response: |
10Hz to 100kHz or higher |
|---|---|
| Maximum Allowable Input Voltage: | 200 Vp-p + 200 Vp-p |
| Maximum Allowable Input Current: | 40 mAp-p + 40 mAp-p |
| Maximum Allowable Power: | 8 W + 8 W |
| Minimum Impedance: | Approx. 2 kΩ |
| Headphone Plug Pin Assignment |
in 1: L+, Pin 2: L- Pin 3: R-, Pin 4: R+ |
| Weight | 370g |
| Cable length | 3.3m |
When SUH2+ is connected to TR2
| Frequency Response | 30Hz to over 100kHz |
|---|---|
| Maximum allowable input voltage | 10Vp-p + 10Vp-p |
| Maximum allowable input current | 800mAp-p + 800mAp-p |
| Maximum allowable power | 8W + 8W |
| Minimum impedance |
approx. 5 ohms (DC) approx. 10 ohms (AC) |
| Dimensions | 130x90x40mm |
| Weight | 100g |
NOTE; If a test signal is input for a certain period of time for measurement, the detection resistor of TR2 may heat up and the protection circuit may be activated to cut off the current. The power will be restored after a while after the power is turned off, but please use only music source.

"The speed is breathtaking. But more importantly, the spatial presentation is unlike any other headphone. The sound doesn't stay in your head; it projects forward, creating a realism that feels as though you are sitting in front of a pair of world-class monitors." (Audiophile Review)









