8
Headphone Output Connection
You can connect your headphones to the OPPO HA-1 using either a standard 6.35 mm connector or a 4-pin XLR
balanced connector. If your headphones terminate with a 3.5 mm connector, you can use the supplied
3.5 mm to 6.35
mm Headphone Adapter
to connect the headphones to the HA-1.
For optimal sound quality, you can adjust the
Headphone Gain
between the
Normal
and
High
settings in order to
properly drive headphones that are very sensitive or require additional power. Please refer to the
Headphone Gain
Selection
section in the
Advanced Operations
chapter of this manual for details.
Notes:
The
6.35 mm Headphone Jack
and
Balanced Headphone Jack
cannot be used simultaneously. When a 6.35
mm connector is plugged in, the
Balanced Headphone Jack
is muted.
When plugging and unplugging the 6.35 mm connector, please completely insert or pull out the connector in a
quick motion. Due to the physical shape of the 6.35 mm connector, keeping the connector plugged in half way
causes a short circuit between the left and right output channels, and may trigger the short-circuit protection
feature of the HA-1.
Balanced Headphone Jack Pin-out
The 4-pin XLR socket for the
Balanced Headphone Jack
uses the following pin-out assignment:
Notes:
Pin 2 (
L-
) and pin 4 (
R-
) are individual signal pins and cannot be tied together as the ground pin for a single-ended
headphone. Never use any adapter to connect the
Balanced Headphone Jack
to a single-ended headphone.
6.35 mm or 4-pin XLR
1: L+
2: L -
3: R+
4: R -
Summary of Contents for HA-1
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