iBasso
Balanced Headphone Amp
PB2
Owner’s manual
1
Main Features:
- 32V voltage swing
- Up to 2500mW output power
- Takes Balanced and Single End inputs, and provides
Balanced and Single End outputs
- 3-Setting gain jumpers for impedance matching
- 10 DIP sockets for OPAMP and Buffer rolling
- 4-layer gold plated PCB
- Rechargeable battery pack
Contents:
iBasso PB2, power adapter, rubber feet, leather pouch,
connection cable, and warranty card.
Also comes with the following OPAMPs and Buffers.
OPAMP/BUF
Qtt.
L/R
BUF
Singe
Dual
AD797 (Blue)
4
•
•
•
－
OPA604
4
•
－
•
－
BUF634U
4
－
•
•
－
BUF634P WB
4
－
•
•
－
Dummy adapter
4
－
•
•
－
OPA604*4, and BUF634U*4 are inserted on the PB2.
Caution:
To protect your hearing, please do not listen at extremely
high volume levels. Extended high volume listening can
lead to permanent hearing loss.
OPAMP and Buffer Rolling
Before you open the enclosure to roll the OPAMP or
buffer, please make sure the PB2 is turned off. The
OPAMP and Buffer can be damaged by static. It is better
to roll the OPAMP in a static-free environment. Always
check it is a single or dual OPAMP before rolling the
OPAMP, and make sure it is being placed into the right
socket.
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 OPAMP 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.)
Charging the Battery,
& Using External Power Supply
When the furnished AC adapter is connected, the PB2’s
battery is bypassed; the PB2 is using the 16V external
power source. When the charge switch turns to On
Position, the PB2 starts charging. The red color charging
lamp turns on at the same time. It takes about 4 hours to
charge the completely drained battery pack. At the point
the red color charge lamp goes off, the battery is about
80% charged. If keeping the AC adapter plugged, the PB2
