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Your Cali HS bass features an internal, high-quality headphone amp, allowing you to have
unrestricted practice with a full tone, anytime, anywhere, without disturbing anybody around
you. The headphones output also gives the user an extra capability to plug the bass
directly into a vast selection of audio devices (via the AUX input) and to record or play along
a backing track. Usage of modern, energy-saving components and a highly-efficient Li-Ion
battery, along with a user-friendly charging system altogether extend the period over which
the amp may be used, thus making the instrument available in many different scenarios.
Switching on the headphone amp
The headphone amp is switched on with the use of a three-way toggle
mini-switch in the front of the instrument, alongside the headphone output.
This integrated switch also makes it possible for the user to select the active or
passive mode for the 1/4" output jack. Switching on the headphone output is
signaled by illuminating the first blue LED on the left, labeled PREAMP ON.
Details on the switch settings and LED indications can be found in further
sections.
Volume and Tone Adjustment
Cali HS features two control knobs. The first one is used to adjust the pickup output signal
level (volume knob) that is sent to the 1/4" instrument output jack and 1/8" headphone
output. The second knob is a typical passive TONE control.
Plugging In Stereo Headphones
The headphone amp can only work with stereo headphones with impedance ranging from
32 to 64 ohms, fitted with a 1/8" (3.5 mm) TRS jack plug. In the case of stereo headphones with
a different plug, a proper adapter should be used. Headphones and adapter should be
purchased separately. Do not use mono (TS jack) headphones or headphones with the
embedded microphone with 1/8" (3.5 mm) jack with this instrument. OMTP, CTIA, or similar
TRRS jack plugs are also not usable with this bass.
Please note that Cali bass is not a stereophonic instrument. For that reason, both channels
of the headphones (left and right) transmit the very same, monophonic pickup signal that is only
split between the two channels of the headphone amp.
Note:
For safety and comfort reasons, the headphones (or other audio devices) should be plugged into the
instrument only after the headphone amp is switched on, with the volume knob set to minimum
(extreme left position).
Mayones Cali Bass – User Manual
Using the Headphone Amp
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