Brise Audio TSURANAGI Manuel utilisateur
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
1
Index
1. Introduction ....................................... 2
1.1 To ensure safe use of the product .................. 2
1.2 Packaged good.................................... 3
1.3 Precautions for use (※Be sure to read) ......... 3
1.4 Product Concept.................................. 5
2. How to use ......................................... 8
2.1 Names and functions of each part ................. 8
2.2 Setting the output level of the player side ..... 10
2.3 Use while charging.............................. 11
3. Trouble-shooting ................................ 12
3.1 No sound........................................ 12
3.2 Distorted sound................................. 13
3.3 Noisy sound..................................... 13
3.4 Charging LED does not light up or blinks ........ 15
4. Specifications ................................... 16
5. Disclaimer......................................... 17
6. Warranty and Contact Information .......... 18
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
2
1. Introduction
Thank you very much for your purchase of TSURANAGI.
We hope you will read the 1.Introduction and 2.How to use before
using the product.
1.1 To ensure safe use of the product
Brise Audio's products are designed with full consideration for
safety. However, all electrical products are dangerous if used
improperly, as fire or electric shock can result in personal injury.
In order to prevent accidents, please be sure to observe the
following.
✓If it breaks down, don't use it.
✓No disassembly
✓Don’t charge or leave the battery near a fire or in the hot sun.
✓Please contact us immediately in case of any malfunction or
damage.
✓If you hear strange noises, smells, or see smoke…
→Turn off power→If the battery is being charged, disconnect
the charging cable as well.→Ask us to repair it.
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
3
1.2 Packaged good
①Amplifier
②User's manual
③USB charging cable (USB Type-A to USB Type-C)
④Product ID card
⑤Warranty card
1.3 Precautions for use (※Be sure to read)
Notes on input terminals
Don’t connect to both unbalanced and balanced inputs at the same
time. Doing so may damage the amplifier on the balanced output side
of the player, causing it to malfunction.
Notes on output terminals
Don’t use 5-pole 4.4 mm and 4-pole 2.5 mm terminals at the same
time. Failure to do so may result in overload.
The output is balanced only.Unbalanced output using the HOT side
and GND is not recommended and is not covered by the warranty, as
it may lead to failure.
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
4
Cautions for balanced connection between player and amplifier
Be sure to connect to GND.
If you don't do the GND connection, it will lead to the failure of
the amplifier and headphones at worst.
Be sure to use a balanced mini-mini cable with a 5-wire GND
connection.
There are some devices that have 5-pole 4.4mm terminals with no
GND connection, so please check the specifications of your player
before using it. We are also in the process of checking whether or
not the players on the market have a GND connection. If you have
any questions, please contact us.
※1
With GND
※2
Without
GND
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
5
1.4 Product Concept
In recent years, in response to the increase in balanced drive of
players with balanced LINE OUT and headphones and earphones, we have
developed a portable amplifier capable of balanced input / output,
which is ideal for Brise Audio for the development of mini-mini
cables and re-cables. It also has a 3-pole 3.5mm unbalanced input
so that it can be connected to a conventional player, and it is
internally converted to a balanced signal with high accuracy and
then output.The output terminal has both a 5-pole 4.4 mm and a 4-pole
2.5 mm.The theme is to express the source information thoroughly,
and the design is based on low distortion and low noise. If the
performance of the circuit is low from the input to the output, the
performance of the whole is deteriorated, so the circuit and the
component of low distortion & low noise are adopted as all the signal
processing circuits. Due to the high input impedance of 1MΩ, the
distortion output by the player corresponding to the upstream is
also minimized. Since the balanced signal is once unbalanced and
converted with high precision by the differential line receiver to
remove external noise, clean playback is possible even outdoors with
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
6
a lot of noise. The key compound amplifier of this amplifier performs
unbalance-balance conversion and current amplification at the same
time. The distortion is further suppressed by putting the current
feedback amplifier in the feedback loop of the all-differential
operational amplifier. The power circuit is supplied independently
for each channel from the regulator of ultra-low noise & ultra-high
PSRR. A 6-layer board is used to eliminate common impedance and
improve signal quality in terms of layout.
Why did you choose the configuration to convert to unbalanced once?
Brise Audio's goal in developing a portable amplifier with ideal sound
quality was to express the source information in its entirety. To achieve
this goal, we placed the highest priority on low distortion and low noise
Differential
Line
Receiver
E-volume
MUSES72320
Fully
differential
amplifier
Current
feedback
amplifier
・Diff to Single
conversion
・Reduction
interference by
internal EMI filter
・High durability
and long life
・Minimize left and
right volume difference
・Single to Diff
conversion
・Composite amplifier
suppresses distortion
and noise
・Low output
impedance
・Current feedback
amplifier and fast
response
・容量性負荷を補償
Player Head-
phone
Low Distortion & Low Noise
Non-inverted
amplifier
・Voltage amplifier
・Suppresses the
output current of the
E-Volume and
minimizes distortion
Balanced or Unbalanced
Unbalanced
Balanced
Negative
feedback
Negative
feedback
Composite amplifier
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
7
in the circuit design. To achieve low noise, we also focused on thorough
common mode noise elimination. In order to ensure stable playback at all
times without interference from radio waves and other sources, we adopted
a configuration that eliminates common mode noise to the greatest extent
possible, as it is expected to be used outdoors. In order to achieve both
low noise and low distortion, an ultra-low distortion audio differential
line receiver with a high common mode noise rejection ratio over a wide
bandwidth was used for the common mode noise rejection circuit. We also
wanted to incorporate the MUSES72320 electronic volume, which we feel has
advantages in terms of performance and sound quality, and to overcome the
problem of different attenuation between the positive and negative side
circuits of the signal (although the error is small to begin with because
it is an electronic volume), we converted it to unbalance in the first stage
of the electronic volume. This is one of the reasons. In order to make the
most of the limited resources of portable amplifiers, the unbalanced
circuit in the middle of the amplifier is designed to have low power
consumption and a spacious mounting area.
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
8
2. How to use
2.1 Names and functions of each part
①Power switch and volume knob…The switch on the volume knob also
serves as the power switch. The microcomputer detects the position
of the volume and commands the electronic volume IC the
attenuation rate.
②Input selector…Select balanced or unbalanced input. The right
side is unbalanced and the left side is balanced.
⑨
Front
Rear
②
⑤
③
④
⑥
⑦
⑧
①
TSURANAGI
UM001 REV1.1
https://briseaudio.jp JULY 2021
9
Do not input signal at the same time.
Simultaneous input may cause the player to malfunction.
③Unbalanced input…Connect a player with 3-pole 3.5 mm output.
④Balanced input…Connect a balanced output player.
⑤Balanced output 1…Connects to headphones or earphones with a
5-pole 4.4mm plug.
⑥Balanced output 2…Connects to headphones or earphones with a
4-pole 2.5 mm plug.
In order to avoid overload, do not connect ⑤& ⑥at the same time.
⑦Charge status LED…Lights up while charging. The light turns off
when charging is complete.
If it flashes, a charging error has occurred.
→For more details, please refer to 3. Troubleshooting.
⑧Battery level LED…1 Flashing (less than 25%), 1 light (25% to
50%), 2 lights (50% to 75%), and 3 lights (75% to 100%).
This function also serves as an error indication when the amplifier
is defective in some way.
→For more information, please refer to 3. Troubleshooting.
Table des matières
