[iBasso] Launches "DC-Tonfa" Dongle DAC with 8ch R2R, Developed in Collaboration with e☆イヤホン, Japan's Largest Earphone/Headphone Specialty Store

8ch R2R Dongle DAC "DC-Tonfa"

MUSIN Inc. will release the "DC-Tonfa," an 8ch R2R dongle DAC from "iBasso," jointly developed with e☆イヤホン, Japan's largest specialty store for earphones and headphones. Pre-orders will begin on July 13, 2026 (Mon), with sales starting on July 17, 2026 (Fri).

To commemorate the Potafes 2026 Summer Akihabara event, an early sale and early purchase campaign will also be held in the Akihabara area.

You can purchase the "DC-Tonfa" early at the e☆イヤホン Akihabara store and the special merchandise booth at Potafes 2026 Summer Akihabara. Early purchasers will receive the "iBasso CB19C: Power Separate Cable for Dongle DAC" as a bonus.

This product will be exclusively released on the direct sales sites of e☆イヤホン and MUSIN Inc., as well as various online malls.

Joint Development by e☆イヤホン x iBasso Audio A Special Specification Model Supervised by a Specialty Store, Delivered to the World

Joint Development by e☆イヤホン x iBasso Audio: A Special Specification Model Supervised by a Specialty Store, Delivered to the World

The DC-Tonfa was jointly developed by e☆イヤホン, which continuously gathers real user feedback, and iBasso Audio, which boasts advanced acoustic technology.

e☆イヤホン is Japan's largest specialty store for earphones and headphones, and for many years has been close to end-users, understanding their real needs in sound.

For the DC-Tonfa, e☆イヤホン was responsible for the product design, accessories pursuing usability, and from the sound philosophy to tuning. Through repeated prototyping and testing, they pursued a sound that allows users to truly enjoy music.

This is a project to deliver the "dedication" unique to Japanese specialty stores to the world in the form of "sound."

Special Tuning Born from the Sensitivity of Enthusiastic Fans and iBasso R2R Sound

Special Tuning Born from the Sensitivity of Enthusiastic Fans and iBasso R2R Sound

"Yuddy," the second-generation Earphone Prince, who is also an enthusiastic fan of iBasso Audio and clearly communicates the product's appeal on social media and YouTube as the face of e☆イヤホン, was in charge of the core tuning and color selection.

The DC-Tonfa features sound tuning by "Yuddy," who combines the perspective of a specialty store with the passion of a music-loving fan.

The goal was a sound that makes you want to simply immerse yourself in music without overthinking.

The tuning brings out the dynamism and atmosphere of the music naturally, allowing you to rediscover the joy of music with every listen.

With its natural and smooth texture, rich sound depth, and musical warmth, the DC-Tonfa's unique listening experience elevates the very act of listening to music into a more enjoyable and memorable experience.

Comes with an e☆イヤホン Supervised MagSafe Protective Case

MagSafe Compatible, Dedicated Protective Case

The DC-Tonfa comes with a MagSafe compatible case specifically designed for the product.

The front part is cut to allow a clear view of the display and the glass panel, which is the face of the product, without compromising the DC-Tonfa's design and visibility even when the case is attached.

By securely attaching to MagSafe-compatible smartphones or MagSafe-compatible cases with magnets, the DC-Tonfa can be fixed to the back of the smartphone.

Integrating the smartphone and DC-Tonfa makes it comfortable to handle even when on the go, greatly improving operability and portability during music playback.

iBasso's In-House Developed R2R Technology Eliminates the Weaknesses of Conventional R2R

8ch R2R DAC

8ch R2R DAC Balanced Full-Differential Architecture

The DC-Tonfa employs an 8ch full-balance R2R DAC using 24bit discrete components.

An 8ch R2R DAC, typically found in desktop devices, is condensed into this compact portable DAC.

The 8ch R2R, balanced full-differential architecture effectively improves zero-crossing distortion and enhances linearity at low levels.

This achieves excellent detail and delicate expressiveness while maintaining the characteristic texture of R2R.

It balances resolution, dynamics, and natural listening feel, allowing you to experience the appeal of R2R even with a compact portable DAC.

312 Low Temperature Coefficient, High Precision Thin Film Resistors Used NOS + 4 Types of Proprietary Digital Filters

800mW+800mW@32Ω High Output Design Premium Design Created by Aluminum Alloy and Glass Panel

Product Specifications

Size: 61mm x 34.6mm x 15mm

Weight: 45g

DAC: 8ch R2R DAC

USB Supported Sampling Rate: Max PCM 768kHz, Max DSD512

4.4mm Balanced Headphone Out:

S/N Ratio: 122dB (AES17-20K A-weighting)

Dynamic Range: 123dB (AES17-20K A-weighting)

THD+N: 0.004%

Output Power: 800mW + 800mW@32Ω, Distortion < 0.5%

Output Level: 5.2Vrms (High Gain)

2.6Vrms (Low Gain)

Separation: 124dB

Frequency Response: 10Hz - 22kHz (-0.3dB)

10Hz - 40kHz (-0.8dB)

Output Impedance: 0.5Ω

3.5mm Single-Ended Headphone Out:

S/N Ratio: 118dB (AES17-20K A-weighting)

Dynamic Range: 115dB (AES17-20K A-weighting)

THD+N: 0.0056%

Output Power: 219mW + 219mW@32Ω, Distortion < 0.1%

Output Level: 2.6Vrms (High Gain)

1.3Vrms (Low Gain)

Separation: 121dB

Frequency Response: 10Hz - 22kHz (-0.3dB)

10Hz - 40kHz (-0.8dB)

Output Impedance: 0.2Ω

*For other specifications, please check the product page.

*Product specifications and accessory contents are subject to change without notice. Please be aware of this in advance.

Product Page Here

Product Information

Product Name

DC-Tonfa

Early Sale

July 11, 2026 (Sat), July 12, 2026 (Sun)

・e☆イヤホン Akihabara Store

・Potafes 2026 Summer Akihabara Special Merchandise Booth

Sales Schedule

Online Pre-order Start Date: July 13, 2026 (Mon) 11:00~

In-Store Pre-order Start Date: From store opening on July 13, 2026 (Mon)

・e☆イヤホン Akihabara Store

・e☆イヤホン Osaka Nipponbashi Main Store

・e☆イヤホン Nagoya Osu Store

・e☆イヤホン Sendai Station Front Store

Release Date: July 17, 2026 (Fri)

Pricing Information

Retail Price: 54,450 yen (tax included)

Distributor

MUSIN Inc. Homepage

https://musinltd.com

MUSIN Inc. Official Shop & Rental

https://www.heylisten.jp/

MUSIN Inc. Official X Account

https://x.com/Musin_AudioJP

MUSIN Inc. Official LINE Account

https://page.line.me/514hxuyb?oat_content=url&openQrModal=true