TANCHJIM REVO Open-Ear Wireless Hi-Fi Earphones
The TANCHJIM REVO is an open-ear wireless Hi-Fi earphone designed for listeners who want high-resolution sound without isolation from their surroundings. Combining a racetrack-shaped dynamic driver, adaptive frequency response algorithm, Bluetooth 6.0 with LDAC support, and an ergonomic liquid silicone fit, the REVO delivers balanced, detailed audio for commuting, workouts, and everyday use while remaining lightweight and secure.
Open-Ear Design for Greater Freedom
Drawing on data from more than 3,000 ear models, the REVO’s open-ear structure is optimized to conform naturally to the contours of the ear. It stays secure during commuting, workouts, and outdoor activities, allowing uninterrupted music while keeping you aware of your surroundings. The directional sound field focuses audio toward the ear without fully sealing it, redefining open-ear listening.
Approx. 9g per Side, Lightweight Comfort for Extended Wear
Each earbud weighs approximately 9 grams. The ergonomic liquid silicone ear hooks are flexible and adjustable, conforming to a wide range of ear shapes while remaining comfortable when worn with glasses. A built-in nickel-titanium alloy wire combines high flexibility, low weight, and corrosion resistance, ensuring lasting comfort even during extended wear.
18×11mm Racetrack-Shaped Dynamic Driver
The REVO features an 18×11mm racetrack-shaped single dynamic driver with a large diaphragm that delivers approximately 2.3 times the effective area of a conventional 10mm circular driver. Finite element simulation optimizes the magnetic circuit to exceed the magnetic flux region and improve transduction efficiency. Compared with long-excursion designs, the optimized magnetic circuit effectively compensates for the bass limitations inherent to open-ear form factors, producing solid and powerful low-end response.
Dynamic Frequency Response Algorithm for Balanced Sound
An adaptive algorithm dynamically adjusts bass and treble in response to volume level, reducing the tendency for thin sound at low volumes and harshness at high volumes. The result is a more natural, less fatiguing frequency balance across listening levels. Base tuning references the B&K 5128 diffuse-field curve and aligns with B&K’s target response, delivering a relaxed, natural, and balanced sound that brings Hi-Fi quality to wireless open-ear listening.
Bluetooth 6.0 with LDAC High-Resolution Audio
Bluetooth 6.0 provides stable connectivity, fast transmission, and low power consumption. The REVO supports LDAC high-resolution audio decoding with a maximum bit rate of 990 kbps, enabling high-fidelity wireless streaming from compatible devices.
TANCHJIM Signature App Tuning
The companion app supports 9-band PEQ for personalized sound tuning and includes multiple preset target curves, including JM-1 and HARMAN-series curves. Users can select preferred tuning with a single tap. The app is available for iOS and Android (HarmonyOS support is currently in development; users can access the app by downloading from the relevant store in the meantime).
One-Touch Effortless Control
Customizable touch gestures allow users to switch tracks, answer or end calls, activate the voice assistant, and more—all with a single touch. Left and right earbuds feature dedicated touch control areas supporting double tap, press-and-hold, and triple tap functions.
Beamforming with HD MEMS Microphone
Beamforming technology enables directional voice pickup and speech enhancement for clear audio capture. Whether walking during a commute, cycling, or running, calls remain clear and stable in a variety of settings.
Open the Case to Connect and Dual-Device Support
Opening the charging case enables instant connection and quick pairing with your phone. The REVO supports simultaneous connection to two devices, allowing seamless switching between them for greater convenience.
IPX5 Splash Resistance and Long-Lasting Battery
The earphones are tested to IPX5 standards to withstand sweat from everyday workouts and light splashes (rinsing, submersion, and underwater use are not recommended). Battery performance reaches approximately 9.5 hours on a single charge and up to 29 hours total with the charging case (tested at 50% volume with AAC-encoded music). A full charge of the earbuds takes about 1.1 hours when the case is above 80% capacity.
About TANCHJIM
TANCHJIM is a brand dedicated to faithfully recreating the original sound. Focusing on high-fidelity audio products, TANCHJIM combines precise engineering, careful acoustic tuning, and practical design to deliver natural and detailed listening experiences across wired and wireless form factors.
Technical Specifications
Brand: TANCHJIM
Model: REVO
Place of Origin: Dongguan, China
Frequency Response: 20 Hz – 20 kHz
Driver: 18×11 mm Dynamic Driver
Diaphragm Material: LCP Dome + PU Surround
Total Harmonic Distortion (THD): < 0.45% @ 1 kHz
Wireless Connectivity: Bluetooth 6.0
Supported Codecs: AAC, SBC, LDAC
Battery Life: Approx. 9.5 hours (earbuds) + 29 hours (with charging case) at 50% volume
Operating Range: 15 m (unobstructed environment)
Charging Port: USB Type-C
Charging Case Input: 5 V = 0.5 A
Rated Battery Capacity/Energy per Earbud: 60 mAh / 3.7 V / 0.222 Wh
Charging Case Rated Battery Capacity/Energy: 500 mAh / 3.7 V / 1.85 Wh
Operating Frequency Range: 2400–2483.5 MHz
RF Transmit Power: ≤ 10.5 dBm (EIRP)
Q&A
What type of driver does the TANCHJIM REVO use?
It uses an 18×11 mm racetrack-shaped single dynamic driver with an LCP dome and PU surround.
Does the REVO support high-resolution wireless audio?
Yes, it supports LDAC decoding via Bluetooth 6.0 with a maximum bit rate of 990 kbps, in addition to AAC and SBC.
How long is the battery life?
Approximately 9.5 hours on a single charge for the earbuds and up to 29 hours total with the charging case (tested at 50% volume).
Is the REVO suitable for sports and outdoor use?
Yes. It features an open-ear design with liquid silicone ear hooks for secure fit, IPX5 splash resistance for sweat and light rain, and a beamforming HD MEMS microphone for clear calls during commuting, cycling, or running.
Can I customize the sound signature?
Yes. The TANCHJIM Signature App provides 9-band PEQ and multiple preset curves including JM-1 and HARMAN-series targets.
Does it support dual-device connection?
Yes. The REVO can connect to two devices simultaneously and allows seamless switching. Opening the case enables quick pairing.
What is the weight of each earbud?
Approximately 9 grams per side.
