The Goodwood Audio Underfacer is like their Interfacer TX, but designed to go under an angled pedal board. Use The Underfacer to take care of all your input, muting, tuning, summing, isolating and phase correcting needs without using any pedal board real-estate.
The TX Underfacer adds an audio transformer to give the option of ground lift and phase correction.
Hit the mute pushbutton on The Underfacer to mute your signal before it reaches your amps. No matter what craziness is happening on your board, the master mute has the final say on what does or doesn’t get sent to your amp.
You can also control the master mute with the optional Goodwood Audio RMT remotely on top of your pedal board.
The Underfacer has two types of summing: Stereo Sum and Split Sum. To access these two modes, use the internal DIP switch to select which mode is best for you.
Split sum – Still use stereo effects as normal. When summed, the right input is ignored and the left input is split to both left and right outputs.
Summing – Hold the foot switch on RMT for more than 2 seconds to switch the sum state to stereo or dual mono. The LED on RMT will blink once the change has been made.
The TX Underfacer comes with ground lift and phase correction for players that want to run more than one amp.
Ground Lift – There are times when two amps are being used that an audible hum/buzz can be heard coming out of your amps. When plugged into one amp only, the hum/buzz is not present. This is commonly referred to as a ground loop. This happens when there is more than one path to earth. To safely fix this common problem, a transformer is needed to isolate your second amp and create one path to ground. Push the red ground lift button to isolate your right amp from your left.
Phase Correction – Another common issue when running two amps is phase cancellation. Some amps are in phase in relation to each other and other amps are not. When amps are out of phase with each other they are cancelling each other out. This is most noticeable in the lower frequencies. Normally this would mean you can’t use those amps together. With the black phase correction button you can now put two amps that were out of phase, back in phase and working together. To access this, turn on the transformer (red button) and flip the phase (black button).
The Underfacer comes with a buffered input. This means before your guitar sees the first pedal on your board you are sending a high impedance signal to your pedals, preserving your tone. The Underfacer also comes with an always on tuner out.
We are open Tuesday-Saturday from 10am until 6pm CDT.
Any order placed before 3pm CDT Tuesday through Saturday is processed for shipment the same day. Orders placed Sunday-Monday will be processed for shipment the following Tuesday.
For Free Shipping items, Effects pedals and small goods items are generally shipped via USPS Priority Mail, and Guitars and Amplifiers are generally shipped via UPS Ground.
Due to our central location in the middle of the US, most orders will be delivered within 1-3 days delivery time.
Other shipping methods are available (at an additional cost), including next day air.
Please call us directly at (972)540-6420 if you have any questions regarding shipping for your order.
Product Videos
Videos Hide Videos Show Videos
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The Masters of Sum - TX Interfacer, TX Underfacer and Output TX
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The Truth About Stereo Summing
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What Is A Ground Loop & How To Fix It
Learn how a ground loop can occur and an example of what one s...
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The Interfacer by Goodwood Audio
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Alternate uses for TX Interfacer, TX Underfacer and Output TX
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