JDS Labs Model # O2+ODAC
Pg. 2 of 2
O2+ODAC Power Adapter Information
ATTENTION:
Improper AC adapters and/or tips can result in capacitor explosion hazards and
device damage. The O2 strictly requires an AC-to-AC adapter, as specified below.
• Required power
adapter characteristics for the Objective
2
:
Type:
AC-to-AC Transformer (AC/AC)
Voltage:
14-20V
AC
output
Current:
Minimum 200mA
Connector: 2.1x5.5mm (ID x OD)
PLEASE NOTE:
AC/DC adapters are very different from AC/AC adapters. Manufacturers commonly abbreviate
and refer to all types simply as "AC Adapters", which gives no indication of their actual output. Be aware that
most adapters are in fact AC/DC type, which supply DC current. These power adapters are used with laptops,
game consoles, computer peripherals, etc., and are
not
compatible
with the Objective2.
The O2 strictly requires an AC-to-AC transformer, with minimum 14VAC output.
Recommended Power Adapters - North America
Supplier
Part #
Price
1. Triad WAU12-200, 120VAC to 12VAC, 200mA
Notes
: Recommended by NwAvGuy. Actual output: 13.5VAC, suitable for most users.
Mouser.com
553-WAU12-200
$5.55
2. Triad WAU16-400, 120VAC to 16VAC, 400mA
Notes
: Recommended by NwAvGuy. **Not verified by JDS Labs**
Mouser.com
553-WAU16-400
$10.76
3. Xicon 120VAC to 18VAC, 500mA
Notes
: Recommended by NwAvGuy. **Not verified by JDS Labs**
Mouser.com
412-218054
$10.65
4. Triad WAU20-200, 120VAC to 20VAC, 200mA
Notes
: Recommended by NwAvGuy. **Not verified by JDS Labs**
Mouser.com
553-WAU20-200
$6.70
Recommended Power Adapters - United Kingdom
Supplier
Part #
Price
1. Maplin N58AT, AC/AC Multi-Voltage 1000mA Power Supply
Notes
: Use 15V output. **Not verified by JDS Labs**
Maplin
Troubleshooting
•
O2 does not turn on, or power LED is on but output is silent
o
Cause: Wrong or missing power adapter
o
Solution: Connect proper AC adapter
•
Distortion at high gain
o
Cause: O2's volume control resides between its input and output stages. Some headphones can
overdrive the O2's input stage. Refer to NwAvGuy's blog for thorough explanation.
o
Solution: Use low gain, or switch to a high voltage AC adapter.
•
No sound in one channel
o
Causes: Bad output cable, or incorrect computer settings
o
Solutions: Check balance settings; try another output cable. Some Mac O/S X machines will pan
audio to Left channel upon first connection of ODAC. User must restore balance to center.
•
Distorted output or “harsh” treble (constant or intermittent)
o
Causes: Weak USB power, or bad USB cable
o
Solutions: Use a powered USB hub or different computer; try another USB cable
