iBasso
Portable Hi-Definition Headphone Amplifier
P3+
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 either 6 AAA batteries or external power
adapter.
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 P3+, power adapter, extra enclosure and screws,
leather pouch, connection cable, and warranty card.
Also comes with an opamp rolling kit includes some
opamps and buffers.(see below)
OPAMP/BUF
Qtt.
L/R
BUF
G/V
Singe
Dual
AD797
2
•
－
•
•
－
AD827
1
•
－
•
－
•
AD712
1
•
－
•
－
•
AD8066
1
•
－
•
－
•
LM6172
1
•
－
•
－
•
LMH6655
1
•
－
•
－
•
LMH6643
1
•
－
•
－
•
BUF634P
2
－
•
•
•
Transistor BUF
2
－
•
•
•
－
Dummy adapter
4
－
•
•
•
－
The AD827, two transistor BUFs, and two dummy
adapters are inserted on the amp when shipping.
Opamp and Buffer Rolling
Before you open the enclosure to roll the opamp or buffer,
please make sure the P3+ 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, and 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 the
opamp or buffer, which is not covered by warranty.)
Setting the Gain:
There are 6 pins, when the pin 1 and 2, 5 and 6 are
connectede, the gain is +10.5dB
When the pin 2 and 3, 4 and 5 are connected, the gain is
0dB
Changing the Battery:
When Changing the Batteries, please make sure the P3+ is
turned off. When inserting the batteries, please follow the
directions.
