In short: solid metal case, very 'sticky' feet, Katana supplied labels fit perfectly. Makes using the amplifier so much easier, and frankly essential for performance. Detail: Plusses: chunky with a single row of foot switches. Red LEDs indicate which channel or effect is currently selected. Controls channel selection (including the panel) and switches the three effects groups on or off individually (being simple switches you cannot adjust any effect other than tap tempo parameters). It is also possible to switch the effects loop in and out It stays in place on the floor quite tenaciously. Negatives: Does exactly what it says on the tin, although what it says on the tin is quite comprehensive, there is still no tuner which means running two cables across the floor to your playing position. The supplied control cable is cheap shiny plastic with moulded plugs and only 3 metres, so if you are serious about live use you will have to buy a longer better quality TRS lead. I am dropping a star in each category, total because it is expensive for what it is, features because there is no tuner, and quality because of the short and cheap control cable. The bottom line is that you do really have to have one if you have a Katana 100 or 1002x12.
Got the GA-FC foot switch for my Roland GA-112 amp. Had been playing the amp for some time before I got the foot switch, have to say I do not regret the purchase, the foot switch brings so much more control over the amp.
I have a delay pedal connected to the FX loop, activating the loop with the foot switch is quick and easy. What I also like is that the reverb can be turned on and off with the switch, that's something that cannot be done with the amp itself unless you just turn the reverb down from the toggle.
Switching channels is accurate, the stomp switches operate smoothly. Also nice to be able to set the boost on and off with your foot, although switching to another predefined channel does the same trick.
I can recommend the foot switch if you play music where you need to change sounds and/or control external effects with ease.
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