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Input ("Goldtone" GA-15 only)
A single jack socket is provided for connection to your instrument. This is a high
impedance input which allows for perfect matching to both passive and active guitars.
Inputs - Hi & Lo/Link ("Goldtone" GA-15RV & GA30RVS)
Two jack sockets are provided for connection to your instrument.
The HI input is a high impedance, high sensitivity input. This can be used with both
passive and active guitars and, depending on the level of output from the guitar and the
VOLUME setting, allows the amplifier to be driven hard into overdrive, if desired.
The LO/LINK socket can be used in two ways. Firstly as a lower impedance, low
sensitivity input, for use with high output guitars when the user wishes to keep the
overdrive under control. Alternatively this socket can be used as a LINK to chain together
two amplifiers, simply plug your guitar into the HI socket, take an output from the
LO/LINK socket and plug this into the HI input of the next amplifier in the chain.
Bright switch (All Models)
The BRIGHT switch adds more high frequencies when selected. It works in the traditional
way, therefore as the volume control is increased the effect becomes less apparent.
Volume ("Goldtone" GA-15 & GA-15RV)
This sets the overall volume level of the amplifier as well as the tone and the amount of
overdrive. From low to about halfway, depending on the output level of the guitar used,
the sound should remain reasonably clean. Increasing the control further will
progressively increase the level of distortion in the sound, obviously being a valve amp it
will respond to the player's dynamics and use of the instruments volume.
Volume / Pull Gain ("Goldtone" GA-30RVS only)
This is a push/pull potentiometer. Pushed in the control acts like a normal volume control
on a typical non-master volume amplifier, therefore it sets the overall volume level of the
amplifier and has a huge effect on the tone and the amount of overdrive. From low to
about halfway, depending on the output level of the guitar and which input socket is
used, the sound should remain reasonably clean. Increasing the control further will
progressively increase the level of power amp overdrive in the sound, obviously being a
valve amp it will respond to the player's dynamics and use of the instrument's volume.
Pulling the control out activates the additional valve preamp stage therefore effectively
turning the control from a VOLUME into a GAIN control. This extra gain stage makes it
possible to produce a fuller overdrive sound especially when turned up as this blends
preamp distortion with power amp distortion. With the control pulled out the extra gain
stage is also footswitchable. This enables the user to footswitch between clean and dirty
sounds.
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