Boss GA-FC

If you buy the Katana, this pedal is a must in order to get the most juice out of it. Its functionality is really simple: it allows to switch between the different tones/channels you have stored in your amp and toggle on/off individual effects while playing. The pedal itself feels quite sturdy and it is super simple to use. This being said, I would say it is quite expensive for what it is.

PROS:
- Easy to use.
- Well built.
- Allows you to access the full potential of your Katana.

CONS:
- Pricey, especially taking into account its simplicity and in comparison to the price of the amp itself.

Overall, I would say that if you have a Katana and have the money it is totally worth it.

I use the switch with my katana amp for a funk/soul band I am in.
There are a few different tones to conjure so I needed the footswitching capabilities of the amp.

Solid metal construction with string foot switches. The cable inputs are also very solid in construction.

I got this with a Boss Katana and I do not know how you would use the amplifier without it. it realy opens up the options of the amp and increases its playability.

I have combined my amp with the GA - FC and a seperate Expression pedal from the GA FC.
This footswitch, like all boss products, just confirms how well they design, manufacture and ship their products.

The only con I have is that now, the katana series might be the most popular device to use the GA FC with and the labels for the switches are not correct for the katana. (This is easily remedied by a sticker overlay to put on the enclosure, so not a big deal).

The LEDs, foot switches and cables jacks are all laid out in a very comfortable and ergonomic fashion ( which is great on a pedalboard amid a see of other lights and patch cables ).

Thomann also packed and delivered this safe and sound, as is to be expected from the team! Thanks Thomann!

It is a simple but effective footswitch. I got this for my Katana 100 and it works flawlessly.

One of the only complaints I've seen is that It has 6 buttons and because of that you have to hold down the panel button for a second to go from bank A to bank B. But one thing I see rarely mentioned is that if you want a quicker access to switching between banks A and B you can purchase the FS-5U footswitch and connect it to the GA-FC's Volume or FX jack. That is in a very obscure scenario where you'd need to switch between 6 totally different presets without a seconds delay. But if you'll ever need it there is an option.

Used for Boss Katana 100 II
Good stuff. Can not imagine to use Katana with a band and live without it.
If you play in one style and tonality and never use pedals anyway, then it is fine without off course. But then it is not review for you.
GA_FC allows you change in between your 8+1 (+1 is the actual front panel setting with physical knobs) presets on the floor. And it allows you to switch on or off all possible effects turing staying in one preset (Boss calls it channel - CH).
Whewn you change preset/CH, the channel switches back to previously assigend preset (does not save the cahnges).
Highly recommend.

Use:
This is a must-have gadget for all BOSS Katana amp users. With this GAFC Footswitch, you could switch the channels or effects on stage or at gigs in a fly! The GAFC Footswitch has 4 channels switches with a panel switch that instantly enables the setting you currently have on the amp. Also, the GAFC has an effect switch to globally change all channels switches into four types of effect switches, which surely is the added value! It also has a Footswitch out for external expression control and a volume pedal control.

Pros:
This unit is tough and can definitely withstand stage abuse! The switches are silent in operation and well-functional.

Cons:
Not much

I have a Katana 100 head, and I think it's really awesome to have this pedal with it. especially when you have presets (you can have 8, which I all use).
The pedal is well made, does what it needs to, looks great and I can't think of things the pedal doesn't do which would be possible...
I would have liked it to be a bit lower in price, since it doesn't really do anything with your signal like an effect pedal does. But once you have it and get to use it, you forget about that.
I got stickers with it to use it with the Katana, but I believe the markings on the pedal are already updated to match those. (can't compare right now).