gtrman100

They don't. You'd have to plug into the front of the amp.

What different effect are you wanting? The Spider has more than 200 effects- 78 amp models, distortions, overdrives, EQ's, compressors, delays, reverbs, modulation effects, etc. built in. As Stonefx said, you might want to get one of the available floorboard controllers to access the effects like a regular effects pedal. The whole idea of the Spider series is to have an all in one solution to finding the amp tone, and the added effects to create your guitar sound.

It's easy to do for yourself, plus it has the advantage of letting you experiment with the parameters to find your desired tone. There are only a few amps that are class A designed- Vox, Matchless, Fender Champ and Supro.

Close enough for jazz...

The DT amp settings aren't set for each amp model from the factory. They are just giving you the option to set each preset to control the DT the way you like. It's just another option of tone control that you can use a preset 2 store. You might like a marshall with a Class A output stage, or a Vox with class A B. It's up to you.

What do you mean fix? Control over the DT amps is a new feature with the 2.8 Helix software update. Up until now, you had to change the software in the DT amp, connect a midi cable, and use DT Edit to configure the amp and then create a midi cc in your Helix preset to control the DT. Now, that's all done by the Helix. All you have to do is connect the Line 6 Link and go to the page I mentioned and you can see all the parameter sliders that control the DT. Here's a few tips when you're on that page: load a preset in the Helix navigate to the output block and click locate the DT25/50 page select and click Choose Preset mode to be able to control the amp via presets (global and off are the other options) The top slider controls what preamp will be active- Helix or DT. Select the one you want The next 3 sliders control the Topology, Class A or B, and Pentode/Triode modes The next slider turns the onboard DT reverb on or off, the next control the default amount of the reverb. The last 3 sliders control the "hidden" DT50 only options. To add Snapshot control over a slider, either click on the slider cursor (square box) and press "S" on your keyboard, or right click on the slider, scroll to the bottom and select Snapshot. This way you can control the DT parameters via Snapshots. Hope this helps.

You can control the DT Amp with the helix with just the line 6 link cable attached. Go ahead and re-initialize your DT so that the stock amps are loaded into the preamp section. Connect the Line 6 link cable. When you open up a preset on the Helix, navigate to the output block. You will see a Tab that says DT 25/50. Click on that and you can select all the parameters of the amp with every Preset Individually. You don’t need to connect a midi cable anymore. The helix is totally compatible now.

Obviously simulcast was mentioning a different amp- the Spiver V. I guess it's a homemade amp he's been playing in his parent's basement. But as a 45 year old, he doesn't get out much...

Helix is now 100% compatible with DT amps with the release of the 2.8 Works great!

This has happened to me 3 times now. It won't return to preset/stomp mode unless I do a global reset. Has is been reported as a bug?

The new software allows you to configure the DT amps, just like the Pod HD did. The rest of the functions are the same as before in terms of adding effects. The tube output stage of the DT amps will always be active. To change the parameters of the DT using HX Edit: load a preset navigate to the output block and click locate the DT25/50 page select and click Choose Preset mode to be able to control the amp via presets (global and off are the other options) The top slider controls what preamp will be active- Helix or DT. Select the one you want The next 3 sliders control the Topology, Class A or B, and Pentode/Triode modes The next slider turns the onboard DT reverb on or off, the next control the default amount of the reverb. The last 3 sliders control the "hidden" DT50 only options. To add Snapshot control over a slider, either click on the slider cursor (square box) and press "S" on your keyboard, or right click on the slider, scroll to the bottom and select Snapshot. This way you can control the DT parameters via Snapshots. I hope this helps.

What is the error message you're getting?

That's correct

https://www.youtube.com/watch?time_continue=1040&v=_Zj8VQJLgao

The hardware is the same, but the software is different! Very important because the new software includes the "Classic" mode which makes the amp sound more like a traditional combo amp. You can buy a Spider V MkI and download the new software to make it identical sounding to a MkII.