IBasso P4 Owner's Manual
iBasso
Portable Hi-Definition Headphone Amplifier P4
Owner’s manual
1
Main Features:
- Three Channel /Four Channel compatible architecture
- Totally 8 gold-plated DIP sockets for OPAMPs and
Buffers rolling
- 2-Setting Gain Jumper for impedance matching
- Powered by 12.6V Li-polymer battery pack, or external
16V power adapter.
- High output power, 600mW+600mW into 32
Ω
Caution:
To protect your hearing, please follow the operation guide
and do not listen at extremely high volume levels.
Extended high volume listening can lead to permanent
hearing loss.
Contents:
iBasso P4, power adapter, rubber feet, leather pouch,
connection cable, and warranty card.
Also comes with an OPAMP rolling kit that includes many
OPAMPs and Buffers. (See below)
OPAMP/BUF
Qtt.
L/R
BUF
G/V
Singe
Dual
AD797
2
•
－
•
•
－
OPA604
2
•
－
•
•
－
TLE2141 class A
2
•
－
•
•
－
BUF634U
2
－
•
•
•
－
BUF634P WB
2
－
•
•
•
－
Transistor BUF
2
－
•
•
•
－
Dummy adapter
4
－
•
•
•
－
TLE2141*2, BUF634U*2, and dummy adapters*2 are
inserted on the P4.
OPAMP and Buffer Rolling
Before you open the enclosure to roll the OPAMP or
buffer, please make sure the P4 is turned off. The OPAMP
and Buffer can be damaged by static. It is better to roll the
OPAMP in a static-free environment. Also, before you
place the OPAMP to the sockets, check it is a single or
dual OPAMP, then place it to the right position.
Direction of Inserting the OPAMP and Buffer:
In the follow picture, shows the first pin of the OPAMPs,
Buffers, or dummy adapters. In the above picture, there is
a black hole on each amplifier or buffer sockets, which is
where the first pin should go. (Be aware of that, inserting
the OPAMP or Buffer in a wrong direction may damage it,
which is not covered by warranty.)
Setting the Gain:
There are 6 pins, when the pin 1 and 2, 5 and 6 are
connected, the gain is +10.5dB
When the pin 2 and 3, 4 and 5 are connected, the gain is
0dB
Charging the Battery:
Use the furnished AC adapter to charge the battery.
Connect the adapter to the P4 and turn the charge switch to
On Position. When the P4 starts charging, the red color
charging lamp turned on. It takes about 3 hours to charge
the completely drained battery pack. At the point the red
color charge lamp turns off, the battery is about 80%