Tanchjim OLA II Coaxial Hybrid In-Ear Monitors

Exceptional High-Resolution Audio in an Ultra-Comfortable Design

The Tanchjim OLA II marks a massive leap forward from the highly acclaimed original OLA. Upgraded to a powerful hybrid configuration, the OLA II combines a next-generation 10mm DMT5 dynamic driver with a custom-engineered Pure Hi ultra-high-frequency balanced armature driver. By aligning both drivers along a precise coaxial acoustic axis, Tanchjim delivers an incredibly cohesive, rich, and detailed soundstage with crisp transient response and zero phase interference. Wrapped in a sleek, lightweight, and dustproof chassis, the OLA II delivers professional audiophile performance in a shell designed to comfortable fit any ear.

Dual-Driver Coaxial Hybrid System

The OLA II features a highly advanced hybrid driver configuration. A custom-developed Pure Hi balanced armature handles the ultra-high frequencies, adding incredible air, sparkle, and natural overtone extensions to your tracks. By offloading the extreme treble load to the BA, the main dynamic driver is free to focus strictly on delivering deep, snappy bass and beautifully lush midranges.

Next-Generation DMT5 Dynamic Driver

At the heart of the OLA II is Tanchjim's proprietary 10mm DMT5 dual-magnetic-circuit, dual-chamber dynamic driver. This structural design maximizes the magnetic flux density inside the voice coil, allowing the diaphragm to move with lightning-fast transient response and incredibly low distortion. Bass hits with tactile authority and precise texture without muddying the vocal ranges.

Aerospace-Grade Aluminum and Ergonomic Design

Built with premium, CNC-machined aerospace-grade aluminum alloy faceplates and transparent medical-grade PC inner cavities, the OLA II looks as stunning as it sounds. The ergonomic shell shape was sculpted after analyzing physical ear profiles, ensuring a pressure-free, incredibly secure fit for hours of comfortable listening.

Built-In Dust and Waterproof Protection

Perfect for outdoor commuting, workouts, or daily travel, the OLA II comes equipped with Tanchjim's specialty waterproof and dustproof nozzle filters. This protective mesh shields the internal hybrid drivers from moisture and debris, preserving the acoustic pathways for long-term performance.

High-Purity Silver-Plated Litz Cable

To guarantee clean signal transmission without coloration, the OLA II includes a premium, detachable silver-plated copper Litz cable in a twisted structure. Using standard 0.78mm 2-pin connectors, this cable is highly flexible, tangle-resistant, and easily upgradeable.

Technical Specifications

In the Box

Your package includes the Tanchjim OLA II In-Ear Monitors, a high-purity silver-plated copper Litz cable, high-performance silicone ear tips in multiple sizes, a soft storage pouch, and the user manual.

Frequently Asked Questions

Q: How does the hybrid dynamic and balanced armature setup sound compared to a single dynamic driver?

A: Standard single-driver IEMs often have to compromise, as one driver must handle everything from sub-bass to high treble. The OLA II uses a hybrid system where the 10mm DMT5 dynamic driver specializes in impactful, textured bass and natural vocals, while the Pure Hi BA handles the high-frequency extension. Working coaxially, they deliver a highly resolving, airy, and coherent sound with excellent separation.

Q: Do these headphones require a powerful amplifier to sound their best?

A: No. With an easy-to-drive impedance of 30 Ohms and a high sensitivity of 121dB/Vrms, the OLA II runs perfectly fine straight out of your phone, laptop, or portable dongle DAC. You do not need massive amplification to get full, dynamic sound and deep bass extension from these monitors.

Q: Can I use the OLA II for gaming or making calls?

A: Yes, absolutely. The OLA II provides incredibly accurate imaging and a wide, open soundstage, making it easy to pinpoint footsteps and directional sound effects in games. The 3.5mm single-ended and Type-C versions come with a high-quality Goertek silicon inline microphone, ensuring crystal-clear communication with teammates or phone contacts.

Q: What is the benefit of the coaxial acoustic structure?

A: Placing the dynamic driver and the balanced armature driver on the exact same coaxial axis ensures that all sound frequencies travel along a perfectly aligned path to your ear canal. This eliminates phase cancellation issues common in multi-driver setups, resulting in a cohesive presentation where the bass, mids, and treble sound completely unified.