Tanchjim Bunny IEM with DSP

Affordable Excellence with Customizable Sound

The Tanchjim Bunny represents a nice evolution in Tanchjim affordable DSP IEM offerings. I loved last years, One DSP and while the Bunny takes a similar route, there are significant updates to the internals as well as the comfort of this IEM compared the One DSP to justify its existence.

What makes the Bunny a noteworthy upgrade is its titanium-plated driver coupled with a sophisticated double acoustic cavity, which according to Tanchjim are designed to deliver rich bass, precise highs, and a wide soundstage.

Having used the Bunny for a few months now swapping it with other IEM’s and playing around with the DSP capabilities. What has struck me the most was what a decent upgrade this over the already pretty great One DSP, especially as far as the comfort. The default sound signature has been tweaked slightly with the Bunny, and no doubt those driver updates provide some of the subtle audio updates I noticed, and there are a few more tricks in the Tanchjim companion application. But before I get into the details, let’s look at the unboxing experience.

Unboxing and Build Quality

The Tanchjim Bunny comes in an attractive, well-designed package that reflects the quality of the product inside:

On the back you get some specifications:

Opening the box reveals the earphones nestled securely inside:

The complete package includes:

• Tanchjim Bunny Type-C earphones
• USB-C to 2-pin 0.78mm connector cable
• Carrying pouch
• A good selection of ear tips
• Documentation

The build quality of the Bunny is excellent, especially considering its price point. The earphones feature a refined design with a comfortable form factor that improves upon the Tanchjim One DSP.

The silver-plated OFC copper cable is not only functional but also aesthetically pleasing, with a flexible transparent sheath that resists tangling:

The USB-C connector is well-constructed and should provide reliable connectivity over time:

A closer look at the earphone body reveals the attention to detail in the construction:

Driver Technology and Acoustic Design

The Tanchjim Bunny features dynamic drivers with titanium-plated PET (polyethylene terephthalate) diaphragms and flexible suspension. This combination delivers rich bass, clear vocals, and a wide soundstage that creates an immersive listening experience.

What sets the Bunny DSP apart from some earlier designs like the One DSP is the acoustic chamber design. The double acoustic chamber provides more precise control over bass and midrange frequencies, while maintaining an impressive harmonic distortion rate of just 0.05% at 94dB.

Labyrinth Acoustic Cavity

The Bunny benefits from a labyrinth structure in its acoustic cavities, offering enhanced resonance to low frequencies for deeper, more dynamic sound reproduction. This design choice contributes significantly to the rich bass response without compromising clarity, there is better handling for bass distortion with the Bunny design and when applying PEQ minimizing bass distortion is vital.

Optimized Internal Cavity

The internal cavity has been meticulously developed to minimize high-frequency absorption and sound dispersion. The result is a clearer, more extended high-frequency response thanks to improved linearity of the sound waves. This attention to the internal acoustic space demonstrates Tanchjim’s commitment to sound quality even in their more affordable offerings.

Tanchjim App Integration and DSP Features

One of the standout features of the Bunny is its comprehensive DSP capabilities, accessible through the dedicated Tanchjim application. The USB-C version incorporates a two-chip 24bit DAC supporting sampling rates up to 96kHz, along with a high-performance operational amplifier and DSP for precise control over the final sound output.

The app provides access to a 5-band equalizer, allowing you to shape the sound of your earphones to your exact preferences:

You can choose from 4 equalization presets or create your own custom sound profiles:

The app even includes specialized gaming presets for enhanced spatial awareness in competitive games:

This level of customization is particularly valuable as it allows you to adapt the Bunny to different genres of music, compensate for recording quality variations, or simply tailor the sound signature to your personal taste. The ability to save and share your sound profiles with other users creates a community aspect that can help you discover new ways to enjoy your music.

DevicePEQ Extension Integration

I’ve added support for the Bunny DSP within my devicePEQ extension for crinGraph online measurement databases like squig.link and Crinacle’s new graph.hangout.audio. This integration allows for easy pushing and pulling of AutoEQ filters, enabling you to match the tonality of whatever headphone and target curve you’re interested in trying.

This functionality bridges the gap between objective measurements and subjective listening preferences, giving users powerful tools to fine-tune their audio experience with precision and ease. For those who appreciate the beauty of PEQ filters, this integration makes the Bunny an exceptionally versatile IEM.

Sound Impressions

Since this is a DSP based IEM, specific sound impressions make little sense as you can easily adjust the sound you get from this IEM, but the following sound impressions are based on the default sound signature.

The Tanchjim Bunny by default, delivers an impressive sound signature that balances technical performance with musicality.

Bass

The bass response is rich and dynamic, thanks to the double acoustic cavity design that promotes low-frequency vibration. Bass notes have excellent texture and definition, with a satisfying weight that never becomes overwhelming or muddy. The titanium-plated driver provides good control over the low end, resulting in bass that is both impactful and articulate.

The labyrinth structure of the acoustic cavity further enhances the resonance of low frequencies, creating a deeper, more dynamic bass presentation that works particularly well with electronic music, hip-hop, and modern pop productions.

Midrange

The midrange presentation is clear and natural, with excellent reproduction of vocals and instruments. Male and female vocals have appropriate presence and body, while instruments like guitars and pianos maintain their natural timbre. The optimized internal cavity design minimizes sound dispersion, resulting in a more coherent midrange that integrates seamlessly with both the bass and treble regions.

Treble

The high-frequency response is extended and detailed without becoming harsh or fatiguing. The Bunny captures the shimmer of cymbals and the air around instruments with precision, providing a sense of space and dimension to recordings. The improved linearity of sound waves, achieved through the optimized internal cavity, contributes to a clearer, more extended high-frequency presentation.

Soundstage & Imaging

The Bunny creates an impressively wide soundstage for an IEM in this price range, with good depth and height that creates an immersive listening experience. Instrument separation is excellent, allowing you to easily distinguish between different elements in complex musical passages. Imaging is precise, with accurate placement of sounds within the stereo field.

Comparison with Tanchjim One DSP

As an upgrade to the Tanchjim One DSP, the Bunny offers several notable improvements:

1. Refined Form Factor: The Bunny features a more comfortable design that improves upon the already good ergonomics of the One DSP.

2. Enhanced Driver Technology: The titanium-plated PET diaphragm provides better technical performance compared to the One DSP, with improved detail retrieval and dynamics.

3. Advanced Acoustic Design: The double acoustic chamber and labyrinth structure represent a significant upgrade in acoustic engineering, resulting in more controlled bass and clearer high frequencies.

4. Improved DSP Implementation: While both models offer DSP capabilities, the Bunny’s implementation is more refined, with better integration between the hardware and software components.

For those who appreciated the One DSP, the Bunny represents a natural and worthwhile upgrade that maintains the strengths of its predecessor while addressing its limitations.

Specifications

Measurements

Frequency Response

The frequency response measurements reveal the Bunny’s well-balanced tuning, which shows significant improvements over the Tanchjim One DSP:

The Bunny maintains a very similar overall signature to the One DSP but with notably better treble extension and control. The bass response is well-controlled with good extension, while the midrange remains natural and present.

One of the key advantages of the Bunny is its excellent channel matching, as shown in the measurements:

The DSP capabilities allow for significant customization of the sound signature. Here’s a comparison of the default tuning with other popular presets:

The “Popular” preset follows a more Harman-like target, while the “Nature” preset offers a more relaxed presentation. This flexibility allows users to tailor the sound to their preferences or specific music genres.

The Bunny also offers specialized presets for different listening scenarios:

The “Balanced” preset follows more of a diffuse field target, while “Instrument Enhance” provides a more V-shaped signature that emphasizes both bass and treble for a more exciting presentation.

Distortion Measurements

The distortion performance of the Bunny is excellent, maintaining low levels across the frequency spectrum:


Here’s the same data presented as percentages for easier interpretation:


The distortion remains well-controlled even at higher SPLs, with particularly impressive performance in the midrange and treble regions. The bass region shows slightly higher distortion, which is typical for dynamic drivers, but remains at very acceptable levels that won’t impact the listening experience.

Rating

The Tanchjim Bunny earns a 5-star Pragmatic Rating due to its exceptional performance, comprehensive feature set, and excellent value proposition.

Here’s the breakdown:

• Sound Quality: ⭐⭐⭐⭐⭐ (Rich, detailed presentation with excellent technical performance)
• Build Quality: ⭐⭐⭐⭐ (Solid construction with premium materials)
• Features: ⭐⭐⭐⭐⭐ (Comprehensive DSP capabilities through the Tanchjim app)
• Comfort: ⭐⭐⭐⭐⭐ (Improved form factor that remains comfortable during extended listening)
• Value: ⭐⭐⭐⭐⭐ (Exceptional performance for the price)

The Bunny is ideal for:

• Audiophiles seeking a high-quality, affordable IEM with DSP capabilities
• Users who appreciate the ability to customize their sound signature
• Those who found the Tanchjim One DSP appealing but wanted improved performance
• Anyone who values the integration with measurement tools like devicePEQ

Conclusion

The Tanchjim Bunny represents an exceptional value in the IEM market, offering a compelling combination of sound quality, build quality, and features at an accessible price point. The integration of DSP capabilities through the Tanchjim app, along with support for the devicePEQ extension, makes it an incredibly versatile option for those who appreciate the ability to fine-tune their listening experience.

What truly sets the Bunny apart is how it balances technical excellence with practical features. The titanium-plated driver and sophisticated acoustic design deliver impressive sound quality out of the box, while the DSP capabilities allow you to tailor that sound to your exact preferences. This combination of hardware and software excellence makes the Bunny a standout product in its category.

For those who appreciated the Tanchjim One DSP, the Bunny represents a meaningful upgrade that improves upon its predecessor in every way. The refined form factor, enhanced driver technology, and advanced acoustic design all contribute to a more refined listening experience.

In a market filled with options, the Tanchjim Bunny distinguishes itself as an exceptional choice for those who appreciate the beauty of PEQ filters and the ability to customize their audio experience. It’s a testament to Tanchjim’s commitment to delivering high-quality audio products at accessible price points, and it earns my highest recommendation for anyone looking for an affordable yet capable IEM with DSP capabilities.