After this brief Pre Loop education, let’s get into its use. You can choose to use your Goldfinger’s Pre FX
Loop to hook up effect pedals you would normally place before the amplifier’s input. The advantage is
that with the loop off, your Goldfinger reacts and feels exactly the same as it does with just a cable
between guitar and amplifier.
To hook up your Pre FX Loop you connect the send to your effect input and the output to the next effects
input and so on until your reach your last effect and you feed the signal back into the amp’s return
connector. As a general rule, overdrives, distortions, fuzz, Wahwah etc…or any effect designed for guitar
level input is used before the amplifier’s input.
You can engage the Pre FX loop the same way you can if you use the Boost circuit.
Another way the loop can be used, is to just utilize the loop’s return, you can feed another sound source,
guitar, into your Goldfinger. For example if your guitar Tech is better at laying down a Bebop solo then
you just have him plugged in the loops return from backstage and when the time comes you just turn the
loop on and fake upfront while your guitar tech does the work.
Remember, if you use the Pre FX Loop in any above described way, your Pre Boost functions are
disabled!
g) Post FX Loop or Volume Boost 21), 37), 38), 39), 40), 41), 42)
This loop is between pre and power amp and can be used to hook up further effect units or you can use it
as a volume boost.
To avoid coloration of your tone and feel it is important to set the levels correctly. The loop has a push
button switch for +4db or -20db level, commonly -20db is used for input sensitive effects like pedals while
+4db works well for line level and rack effects.
You have the choice of either using the loop in parallel or series mode. In parallel your effects get mixed
via the Post Fx control to the internal dry signal. In series the entire preamp signal gets routed through the
effects unit and the Post FX control works as a volume control.
Please note that volume pedals only work in the series mode.
The loop can be engaged via the on off switch on the back panel or via the foot controller,
Please note that with the foot controller hooked up the switch (37-Loop On/Off)) on the amp must
be set to on (Out)! This is unique in the way that it is the opposite with all of our other amplifiers!!
To use the Post FX loop as a volume boost, it is best to switch to parallel mode, set level to +4db and
then set the desired volume boost via the Post Fx control on the front panel.
On the back panel you will find a recessed trim pot labeled Loop Gain, to change the factory setting
(about 50%). It sets the loops return tube gain factor. In general the factory setting works for all
applications and this should not be adjusted.
Primary use would be to adjust unity volume for loop on and off in parallel mode. To adjust, you hook up
your effects unit; turn the loop on, set sensitivity via the db push button switch, set your effect to ideally
100% effect, then use the amps Post FX control on the front panel to dial in the amount of effect you
want. Then switch the loop on and off, if you do not have unity volume you can adjust it via the Loop Gain
trim pot while the loop is on.
While it is meant to be for the parallel mode it is also in the circuit in the series mode, if the range of the
Post FX control is not enough, you can shift it with this trim pot.
