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Delivery time approx. 2 months. Made to order
TSURANAGI-V2
TSURANAGI-V2 is a version 2 model that has been improved based on feedback from TSURANAGI.
The three main changes are "6 dB reduction in gain", "change in volume curve" and "switch to laser engraving".
1. Gain reduced by 6 dB Objective: A new resistor with a different residual noise rejection value is used.
As a result, the amplification level has dropped, making it difficult to sense sounds even with highly sensitive earphones.
By reducing the gain from 10.5 dB to 4.5 dB, the noise was reduced by 45%.
If the gain is lowered, it will be difficult to secure the sound pressure, but we believe that due to the high output power, it is sufficient for modern players.
At 10.5 dB, we assumed that hundreds of Ω headphones could be used with low-power players, so we set the gain high.
2. Changing the volume curve Purpose: Improve easy volume adjustment
In In the past, the curve rose rapidly in the low volume range, but it was difficult to adjust it with high-sensitivity headphones, so we changed it to a linear curve. There is no change in the minimum and maximum volume.
3. Switch to laser engraving Purpose: To improve the durability of the print
Printing on conventional cases could be scratched off. TSURANAGI-V2 is laser engraved and durability has been greatly improved. The printing design has also been changed to make it easier.
The TSURANAGI portable amplifier was designed as a test device for the development of Brise Audio's high-end headphone cables and high-end portable line cables (mini-mini cables) to create an ideal portable audio environment.
Brise Audio cables are used for internal wiring, and the electromagnetic wave absorbing shielding material and CNT (carbon nanotubes) used in our high-end cables such as MURAKUMO and YATONO are installed on the board to further improve the sound quality.
reviews
"The Tsuranagi reveals a fantastic sonic refinement. It elevates the music-listening experience to new heights. It amplifies not just sound but the very essence of high-fidelity portable audio, offering an immersive, accurate, and engaging sonic journey for the audiophiles willing to spend that kind of cash to explore the summit in portables."
https://www.headfonia.com/brise-audio-tsuranagi-review/2/
"It's a better amplifier for me than the Cayin C9 or the Chord Hugo 2."
"The Brise Tsuranagi is the best portable IEM amp I have ever heard. It is just incredible, and no matter what I throw at it, it's simply breathtakingly good. I find myself excited to use it, rushing home to plug it in.Isn't that what this hobby is all about? Being transported to another plane, being completely enveloped in your music, permanently emblazoning a smile that reaches ear to ear."
- Absolutely stunning sound
- Enhances realism, dynamics, resolution, staging, extension, positioning and timbre
- Insanely musical but neutral
- Small footprint and very light
- Brise house sound is incredible
Breeze Audio TSURANAGI - Reviews | Headphone Reviews and Discussion - Head-Fi.org
Overview
- Portable amplifier with analog input and output for earphones and headphones
- Balanced input/output
- Balanced output for unbalanced input signals
- Pentaconn 4.4mm connector
- Input: balanced/unbalanced (5-pin 4.4mm + 3-pin 3.5mm)
- Output: symmetrical (5-pin 4.4 mm + 4-pin 2.5 mm)
- Equipped with high-quality electronic volume IC MUSES72320
- High input impedance and high common-mode noise rejection through low-noise differential line receiver
- Asymmetrical-symmetrical conversion through low-noise, fully differential operational amplifier
- Low-distortion current feedback amplifier for driving headphones
- Dual power supply and DC servo eliminate input and output coupling capacitors.
- Charging via USB Type C
- Continuous playback time of approximately 8 hours (depending on your environment)
product concept
In response to the recent increase in the number of playback devices with balanced LINE OUTs and balanced drive for headphones and earphones, Brise Audio has developed a portable amplifier with ideal balanced input/output for the development of mini-mini cables and re-cables .
To enable connection to conventional playback devices, an unbalanced 3-pin 3.5 mm input is also available, which is internally converted into a high-precision balanced signal before being output.
Both 5-pin 4.4mm and 4-pin 2.5mm connectors are available for outputs. The design is based on low distortion and low noise, with the aim of reproducing all the information from the source.
Low performance of any of the circuits, from input to output, will result in poor overall performance, so low distortion and low noise circuits and components are used in all signal processing circuits.
The high input impedance of 1 MΩ also minimizes distortion at the output of the upstream player.
A differential line receiver precisely converts the balanced signal into an unbalanced one to eliminate extraneous noise and ensure clean reproduction even in noisy outdoor areas.
The amplifier's central composite amplifier performs the conversion of unbalanced to balanced signals and the current amplification simultaneously.
Distortion is further reduced by integrating a current feedback amplifier into the feedback loop of all differential operational amplifiers.
The power supply circuit uses ultra-low noise and ultra-high PSRR regulators and supplies each channel independently.
A six-layer board is used to eliminate common impedance and improve signal quality in terms of layout.
As with the development of our cables, TSURANAGI pays attention to high sound performance, a wide bandwidth, no sound distortion and a low noise floor.
In addition, we design our cables with the goal of minimizing the impact of the external environment and getting as much performance out of the equipment as possible, both in terms of sound quality and performance.
TSURANAGI is a reference for our cable development environment, and we tried to develop an amplifier that does not affect the performance and sound quality of the cable. Cables are also designed not to become bottlenecks in the system, so we want to raise the bar even higher internally.
Innovations & Highlights
New amplifier features include an amplifier bandwidth of 2 Hz to 200 kHz to ensure flat reproduction in the audible range of 20 Hz to 20 kHz.
The differential DC servo amplifier detects the differential DC current of the balanced output and feeds it back to all differential operational amplifiers so that the offset is zero.
This reduces the DC offset of the output to +/-50 µV and eliminates the need for coupling capacitors on the input side. The OPAMPs used in the DC servo amplifiers are also extremely high-performance, low-noise products to ensure that sound quality is not compromised.
Should the unlikely event that a DC offset occurs, the integrated microcontroller detects this and protects the headphones.
All power supply decoupling capacitors in the signal processing circuits use film capacitors and conductive polymer aluminum capacitors.
To ensure sound quality, all components are carefully tested and used without regard to cost.
Uncompromising power supply
Independent power supply circuits are built in to ensure thorough separation of L-channel and R-channel and provide a margin of power supply capacity.
The switching regulator and the linear regulator alone have a current capacity that extends up to the maximum rated power of the amplifier. In addition, the regulators are powered independently of each other so that they can also follow an instantaneous current consumption.
Both power supplies are generated from the battery voltage using switching regulators, which are designed to be very low-noise due to a switching frequency of 2 MHz and large output capacitors for switching regulators.
The purpose of generating both power supplies is to eliminate coupling capacitors on the output side and to enable low distortion operation due to the high supply voltage.
Operational amplifiers are typically operated at +/- 15 V, but since the power loss is not negligible when the voltage is raised to this level, +/- 9.3 V was used to ensure battery life.
In the stage after the switching regulator, an ultra-high-performance linear regulator is provided, which thoroughly removes the residual switching noise and ensures low-noise reproduction.
These linear regulators are capable of removing noise down to the high frequency bandwidth, so that even 2 MHz switching noise is reliably eliminated.
Two of the six layers are used for power supply, with positive and negative layers separated and a GND layer in between to avoid interference.
As with the power supply, the GND wiring is also wired on a single plane to reduce impedance, while the signal GND and power GND are separated not only between channels but also within channels to the point where they cross at a single point to ensure thorough isolation.
The GND is grounded at a single point to the aluminum chassis, eliminating GND loops and suppressing external electromagnetic interference.
TSURANAGI specification
- Asymmetrical, Symmetrical
- Input terminal 3-pin 3.5 mm 5-pin 4.4 mm (GND connection)
- Output terminal - 5-pin 4.4 mm (GND connection) / 4-pin 2.5 mm
- Voltage gain (max. volume) 10.5 dB
- Maximum input (volume max.) 1.5 Vrms (2.1 Vpeak)
- Frequency response (-3 dB) 2 Hz - 200 kHz
- Recommended load impedance 16 Ω or more (listening test required if less than 16 Ω)
- Maximum output power (16 Ohm, THD+N < 0.01 %) 700 mW + 700 mW
- Maximum output power (32 Ohm, THD+N<0.01%) 1000 mW + 1000 mW
- Maximum output power (300 Ohm, THD+N<0.01%) 100 mW + 100 mW
- "THD+N (BW=20kHz, 1Vrms output, 16ohm)" ＜ 0.005%.
- "THD+N (BW=20kHz, 1Vrms output, 300ohm)" < 0.002%.
- "THD+N (BW=20kHz, 3.4Vrms output, 300ohm)" ＜ 0.0007%.
- Crosstalk (20Hz - 20kHz)＜-100dB
- Battery life 8 hours
- Dimensions (W x H x D), without protrusions 80 mm x 30 mm x 120 mm
- USB Type-C charging port
- Battery capacity 7.4 V 2800 mAh
- Charging time < 5 h (with 5 V 2 A AC adapter)
- Weight 360 g
