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1. The Power and Standby Toggle Switches
Due to the nature of vacuum tubes, we suggest to
power up the YBA amp in Standby mode for a few
minutes prior to use. This will allow the tubes to warm
up. The pilot light glows red when the amplifier is
engaged; it glows amber when in Standby mode.
Note: Before powering up and disengaging the Standby
switch make sure speaker cabinets are connected to
the output jacks.
When the amplifier is warmed up, disengage the Standby switch and get ready to
experience the classic tone of a Traynor Bassmaster all-tube amplifier.
Note: It's recommended to leave the amplifier powered up during set breaks, the Standby
switch cuts all output from the power amplifier.
Inputs
0
Passive
2. 0dB / Passive and -6dB / Active Input Jacks
The YBA is equipped with two input jacks. The 0dB/Passive input feeds the first tube input-
stage directly while the -6dB/Active input applies a pad to it. The -6dB input is usually used
for bass guitars that have active pickups or ones with extremely hot levels.
3. Deep Switch
The YBA is equipped with a Deep switch to help accentuate deep bass and treble frequencies.
4. Bright Switch
The Bright switch provides a small amount of treble boost for added presence. The effect is
more pronounced at lower gain settings.
5. Resonance Switch
The Resonance switch is placed in the output stage of the power amplifier and controls the
amount of low frequency damping. Pushing in the switch reduces the damping factor and
allows the resonance of the speaker cabinet to be more pronounced.
Tip: Having the switch out will increase the damping factor and produce a tighter sound.
Gain
Bass
5
5
0
10
0
6. Gain Control
The Gain control is placed immediately after the first tube-stage and is used in conjunction with
the Master volume control to help achieve the proper sound and feel. This control also allows the
capability of giving a warm more saturated tube sound when turned up (even at low volume levels).
-6
Deep
Active
Mid
5
10
0
10
200
2
Standby
Bright
Resonance
Frequency
Treble
1.0K
5
3.0K
0
Hz
Power
On
Off
Master
5
10
0
10
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