Y'en aura pour à peu près tous les curieux

rudra.v a écrit :----------[test en attente]----------
C'est sur ton iPhone 6 c'est ça ?MrButchi a écrit :ps: le mode DAC marche bien. Pas un truc de ouf hein, mais sur mon portable, c'est mieux que la HO amplifiée
Ca fait clairement envie."The Arrow 5TX is the successor of the 5T. Two BUF634 buffers increase the AD8620's output current to 250mA per each channel. This will let the AD8620 operate with less distortion as it doesn't have to drive the headphones directly. Sound quality is is further improved by biasing the AD8620 into class A operation using cascaded JFETs. This will make the Arrow 5TX a true high-end amp with the same size and functionality of the 5T! "
MrButchi a écrit :Bcp
Change Log
Arrow 1G
• Since mid February 2010: Improved sensitivity of automatic
switch (will not turn off accidentally)
• Since April 2010: Nuts are directly soldered on the circuit board
(will not get loose)
Arrow G2.0
• Second headphone jack
• No real power switch
• Deeper bass boost 9dB + 9dB
• Longer battery run time (up to 50 hours)
• Film input caps
• Lower ESR power rail caps and decoupling caps
• Rear switches are more recessed (less sticking out)
• Better firmware (faster power shifting, more precise battery
voltage detection etc.)
Arrow G2.1
• New pre-amp (less switch-on click noise)
Arrow G2.2
• Change of output resistors from 10/75/120 to 0/65/110 (better
synergy with some IEMs like Triple.Fi 10 which sound weird with
any output resistor)
Arrow G3.0
• Change of output resistors to 0/20/65 (better control of treble)
• Additional ceramic capacitors to lower impedance of tantalum
caps (virtual better treble but barely noticeable)
Arrow G4.0
• No more impedance button (useless function as the power draw automatically adjusts to the cans being used)
• Replaced output resistors with an optional treble boost
• Now has treble boost with two settings.
• Bass boost has been reduced from +9dB and +9dB+9dB on pre-4G models to +3dB and +9dB
• Amp now has double battery life (30 hours for high impedance and 80 hours for low impedance)
Arrow 5TX Manual
Battery charging
A blinking red LED indicates that the battery needs to be charged. Connect to an USB port and the battery will charge in 3-4 hours.
As long as the green LED blinks the battery is charging. Once the green LED shines steady the charging is finished.
When the "DAC" switch is set to "M" (Mobile) the battery may only be charged by an adapter and not by a computer.
Power switch "O I A"
In "A" (Auto)-mode the amplifier will switch off after 5 minutes without music playing (the red LED will dim after 2 minutes). In "I"-mode the amplifier will turn off after 60 minutes without music playing.
When the red LED blinks the switch-off times will be shorter. For example, if the red LED blinks very fast it means that the battery is almost empty and the turn-off time is only 30 seconds instead of 5 minutes.
Note that the incoming audio signal can not be too low, otherwise the amp can not detect it. Keep the volume of the music player (MP3, CD etc.) at about 50-80% of its maximum.
Volume control
Slide the volume wheel to the side will increase or decrease the volume in 65-steps. If the wheel is pushed in the center the volume will mute and may be released after it was pushed again.
Gain switch
Keep the gain switch at the lowest possible position to keep the noise level low. Only increase the gain when the volume is not enough. Headphones with a higher impedance rating will need a higher gain to play at the same loudness as low impedance headphones.
DAC switch
Select "O" to deactivate the USB DAC. Connecting the amplifier to a computer will only charge the battery.
Select "P" (PC) when you use a computer as a digital audio source (via an USB cable). The internal DAC in the 5TX will be turned on when an active PC is connected. That means it is not necessary to set the DAC switch to "O" after disconnecting from a computer. The DAC switch actually has no function when no USB source is connected.
Select "M" (Mobile) when you use a portable device (Android, iPhone/iPod/iPad) as a digital audio source. In "M"-mode the 5TX's battery will not be charged by an digital player. It can only be charged by an adapter. Simply disconnect the digital player and connect an adapter to charge the battery. The amplifier will automatically detect the presence of an adapter. (Very old adapters sold about 10 years ago may not be detected--in this case use a newer one.)
USB DAC connection
Android: Use the supplied USB-USB cable to connect an Android phone. Although very thick the cable may be flexed easily. All new Android phones support the USB DAC connection. If not, please update the firmware and try to connect again.
iPhone/iPad: A "Camera Connection Kit" and a standard USB cable is needed to connect the amplifier to an iPhone/iPod/iPad.