iBasso PB2 User manual

iBasso Balanced Headphone Amp PB2
Owner’s manual
1
Main Features:
- 32V voltage swing
- Up to 2500mW output power
- Takes Balance an Single En inputs, an provi es
Balance an Single En outputs
- 3-Setting gain jumpers for impe ance matching
- 10 DIP sockets for OPAMP an Buffer rolling
- 4-layer gol plate PCB
- Rechargeable battery pack
Contents:
iBasso PB2, power a apter, rubber feet, leather pouch,
connection cable, an warranty car .
Also comes with the following OPAMPs an Buffers.
OPAMP/BUF Qtt. L/R BUF Singe Dual
AD797 (Blue)
4
• • • －
OPA604
4
• － • －
BUF634U
4 －
• • －
BUF634P WB
4 －
• • －
Dummy a apter
4 －
• • －
OPA604*4, an BUF634U*4 are inserte on the PB2.
Caution:
To protect your hearing, please o not listen at extremely
high volume levels. Exten e high volume listening can
lea 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 turne off. The
OPAMP an Buffer can be amage by static. It is better
to roll the OPAMP in a static-free environment. Always
check it is a single or ual OPAMP before rolling the
OPAMP, an make sure it is being place into the right
socket.
Direction of Inserting the OPAMP and Buffer:
In the follow picture, shows the first pin of the OPAMPs,
Buffers, or ummy a apters. In the above picture, there is
a black hole on each OPAMP or Buffer sockets, which is
where the first pin shoul go. (Be aware of that, inserting
the OPAMP or Buffer in a wrong irection may amage it,
which is not covere by warranty.)
Charging the Battery,
& Using External Power Supply
When the furnishe AC a apter is connecte , the PB2’s
battery is bypasse ; the PB2 is using the 16V external
power source. When the charge switch turns to On
Position, the PB2 starts charging. The re color charging
lamp turns on at the same time. It takes about 4 hours to
charge the completely raine battery pack. At the point
the re color charge lamp goes off, the battery is about
80% charge . If keeping the AC a apter plugge , the PB2

iBasso Balanced Headphone Amp PB2
Owner’s manual
1
is on trickle charge mo e. After 2 more hours, the battery
will be fully charge . PB2 has overcharge protection; you
can leave the amp plugge an no over-charging concerns.
Warranty:
iBasso PB2 (exclu ing accessories an battery pack) to be
free from malfunctions an efects in both materials an
workmanship for one year from the ate of purchase.
Buyer shoul retain the warranty car . The warranty car
will be require with any request for warranty repair.
This warranty oes not apply when failure is ue to,
acci ent alteration, water infiltration, mo ification,
unauthorize service, misuse, abuse, use with incompatible
accessories or attachments, failure to follow operations, or
claim ma e after the uration of this warranty.
For further pro uct an warranty information, please go to
www.iBasso.com .
Specifications:
Power Source：Built-in 12.6V Li-Polymer Battery Pack, or
16V External Power Supply
Frequency Response: 10Hz~150 KHz -0.5 B
Signal to Noise Ratio：-115 B
Output power：Up to 2500mW+2500mW into 32Ω
Gain: +6 B/ +12 B/ +20 B (Balance Output)
0/ +6 B/ + 10 B (Single En Output)
Battery Life: >20 Hours
Battery Charge Time: 4 Hours
Recommen e Hea phone Impe ance: 8~600Ω
Case imension: 2.2W x 3.9L x 0.95H (inch)
55W x 1001L x 24H (mm)
Weight: 168g or 5.9oz