Line 6 Helix Stadium vs Quad Cortex

[fiftyshadesofslay]

Okay, so I’ve had the opportunity to briefly compare the Stadium XL directly with the Quad Cortex this evening. Running both through an Atomic CLR.

Not a scientific comparison by any stretch, not even a very well thought out one but in the time I had I can’t help but feel that when compared directly, the QC absolutely spanks the Helix sound wise. QC sounds bigger and badder, Helix sounds smaller and boxier.

Can’t directly compare to the original amps but I preferred the 2203, EVH, AC30 and Soldano in the QC across the board. I used the plug-in Soldano in the QC, that amp especially wasn’t even a remotely close fight.

Effects are about on par, pitch (I mainly use dual octaves) we’re better on QC. My delay needs are simple and I liked the QC digital delay with modulation better. Reverbs are better on QC. Drives about the same, but QC captures are better (appreciate proxy is incoming).

Biggest surprise was DSP and what you can cram into a preset. I tested my patches on one line to keep it fair, using pitch, drive, amp, cab, chorus, delay, big reverb, small reverb. Helix had all Agoura models unavailable after this. QC could fit another amp in. Of course there’s differences in how they’re modelled or coded etc but in a real world scenario they’re basically on par, and QC is much older.

Pluses for the Helix are despite the size the hardware is much better, screen is better and shiwcase is a great addition.

 

[Karl Houseknecht]

I tested my patches on one line to keep it fair, using pitch, drive, amp, cab, chorus, delay, big reverb, small reverb. Helix had all Agoura models unavailable after this.

I guess if you test the unit in a way that doesn’t take advantage of all available DSP then it won’t measure up.

 

[fiftyshadesofslay]

I guess if you test the unit in a way that doesn’t take advantage of all available DSP then it won’t measure up.

Well if I’m using one line for each unit isn’t that exactly equal? They both split their DSP in the same way.

 

[MirrorProfiles]

In before someone says “did you try the hype control?”

 

[Orvillain]

Gotta be honest guv ..... I've really been thinking the same thing for a while.

 

[Digital Igloo]

In before someone says “did you try the hype control?”

I mean... yeah. You kinda joke like it's not a thing but it's a thing. Accurate amp models don't sound as big or full as processed models.

Also make sure your 1/4" (or XLR if you're using them) outputs are set to Line level. There was a very early bug that caught a couple people where even if it said Line, you had to toggle the setting to make sure. Ugh, yeah. NOT happy with that. It's like how Helix 1.0 loaded all 57s on the cabs, even when they said there were different mics.

 

[MirrorProfiles]

I mean... yeah. You kinda joke like it's not a thing but it's a thing. Accurate amp models don't sound as big or full as processed models.

Depends on the processing though?

I’ve only used the QC when musicians have brought them in, so it’s more like 10-15 minutes here or there at a time - my experience was a few models sounded a bit weird (like the Uber) but most of the ones I could compare sounded pretty close to my real amps. Their plugins (which i’m more familiar with) certainly don’t sound processed to my amps - the 2204, 2203, EVH, 5150 etc.

The ones that sound weirdest seem to be down to the load box they’ve used (like the SLO and IIC+ being a bit dark).

I know you’ve mentioned the processed thing a few times, and I’m genuinely curious to know more about what you mean by it so I can hear it for myself. Is it an additional EQ thing? the dynamics are weird? It doesn’t really match with my experience but maybe it’s on different amps or i’m overlooking something.

The ones that sound most different to me just sound like bad models or a dark load (where they’d need more eq to sound bigger, not less).

I’ve said it before in the main Stadium thread, but I really can’t work out why I have no problems getting Fractal, Helix Native, NDSP plugins all sounding like my amps, but I struggle to do the same with Agoura. I don’t doubt your experiences at all, but the “NDSP amps sound hyped and not like an unprocessed amp” thing just hasn’t ever come up for me.

 

[Mongillo19]

The QC is a great sounding device and has a fantastic UI.

Hard to go wrong with it and there is a reason it sits at the top of sales charts (and no it's not marketing alone )

What did you think about feel. I thought the stadium felt amazing and seemed to take a next step in that regards

 

[Orvillain]

So from memory, having owned a QC twice.

Stadium VS QC for me:

- Stadium is a lot buggier. This isn't exactly a fair criticism considering the time on market differential.
- QC does have more "stompbox" sounding reverbs, to my ears, they're better.
- Helix/Stadium has superior analog delay models.
- Digital delay sounds better on the QC; something about the decay profile of the L6 digital delay really annoys me.
- While Helix has some good amps, I really cannot shake this strong feeling that Agoura has something wrong with it. I don't know what it is, but it really doesn't feel or sound like my real amplifiers in so many cases. I cannot quantify it any better than that. I really wish I didn't feel that way, but I do.
- Pitch effects are a bit of a wash for me. I think they're both good.
- L6 Glitch Delay is the GOAT.
- QC's 'Freeze' effect is best in class in my opinion. Beats anything you can do on HX/Stad/Fractal.
- QC has a really damn good looper. Line6 always say they don't want to be a "me too" company making "me too" products... but this is one area where they really should hold their nose and just fucking do it. Fractal too. QC absolutely pwns everyone for the looper.
- QC has really dogshit footswitching capabilities. Literally they must think their users are utter children who can't talk about CC's or PC's without picking their nose... because it's so woefully behind everyone else. You don't even get dedicated midi commands for scenes versus stompbox mode... so stupid.
- There is no question... the QC has consumer electronics built into it, at heart. Must be the converters, or they've cheaped out on something else along the way. The signal to noise ratio is not great, the main output of the unit is not great, and at a raw electronics level, it sounds nowhere near even Helix let alone Stadium. Stadium and Axe FX III are just about equal; which is a good improvement that Line6 have made.

 

[fiftyshadesofslay]

In before someone says “did you try the hype control?”

I did, sometimes it sounded good (not necessarily better) sometimes worse. It didn’t really change the overall tonality of the Stadium or make a difference to the comparison.

 

[fiftyshadesofslay]

The QC is a great sounding device and has a fantastic UI.

Hard to go wrong with it and there is a reason it sits at the top of sales charts (and no it's not marketing alone )

What did you think about feel. I thought the stadium felt amazing and seemed to take a next step in that regards

For feel, honestly they felt about the same. Both absolutely fine and both not as nice as a valve amp.

 

[dws2384]

I’ve been using a QC since release and now have Stadium non-XL.

I miss captures but know proxy is coming soon. I’m hoping it’s as good as NAM or I’d still be hoping they add support. Other than that, I feel like I can get equally good sounds out of each unit. Much prefer Stadium UI, workflow, size, footswitch options, etc. Will likely move the QC if Proxy is good.

 

[mbenigni]

- QC has really dogshit footswitching capabilities. Literally they must think their users are utter children who can't talk about CC's or PC's without picking their nose... because it's so woefully behind everyone else. You don't even get dedicated midi commands for scenes versus stompbox mode... so stupid.

Not sure about your observation re: footswitching. Maybe some changes were made since you last owned a QC. It’s definitely very, very simple compared with Line 6 or Fractal (in the latter case, not necessarily a bad thing IMO), but you can definitely use CCs to target scenes and a different set of CCs to target footswitches assigned to stomps. Maybe I’m misunderstanding but I find this presents a reasonable amount of flexibility without over-complicating things (since stomps will very per preset.) The only thing I sometimes miss is the ability to use one switch or CC to toggle between two scenes on subsequent presses.

 

[Orvillain]

Not sure about your observation re: footswitching. Maybe some changes were made since you last owned a QC. It’s definitely very, very simple compared with Line 6 or Fractal (in the latter case, not necessarily a bad thing IMO), but you can definitely use CCs to target scenes and a different set of CCs to target footswitches assigned to stomps. Maybe I’m misunderstanding but I find this presents a reasonable amount of flexibility without over-complicating things. The only thing I sometimes miss is the ability to use one switch or CC to toggle between two scenes on subsequent presses.

From what I can recall, even the last time I owned the unit, which was last year.... you cannot setup separate midi commands for the scenes mode versus the stompbox mode.

Which means, you setup a command for a scene. Cool. Got a CC or a PC switching another device. You switch to stompbox mode. That same switch STILL sends the same CC or PC, even though you're in a different mode.

I'm reasonably sure that they never updated this. It has been that way since launch. Which means if you ever wanted to use scenes to switch your amp channel via midi, and you just wanted stompbox mode to switch effects on and off without affecting your amp channel... you're shit outta luck.

Happy to be corrected on that. It doesn't make too much difference to me anyway, because the QC is too noisy in 4-cm with a real amp anyways!!

 

[mbenigni]

From what I can recall, even the last time I owned the unit, which was last year.... you cannot setup separate midi commands for the scenes mode versus the stompbox mode.

Which means, you setup a command for a scene. Cool. Got a CC or a PC switching another device. You switch to stompbox mode. That same switch STILL sends the same CC or PC, even though you're in a different mode.

I'm reasonably sure that they never updated this. It has been that way since launch. Which means if you ever wanted to use scenes to switch your amp channel via midi, and you just wanted stompbox mode to switch effects on and off without affecting your amp channel... you're shit outta luck.

Happy to be corrected on that. It doesn't make too much difference to me anyway, because the QC is too noisy in 4-cm with a real amp anyways!!

I see. I had misunderstood by way of not thinking in terms of outgoing MIDI. You’re absolutely right about that functionality not being sufficiently (or at all) mode-aware.

 

[banned]

Haven't tried the QC

Reg. the Stadium, I feel the modeling is not quite there. Secondly, wherever I tried the Hype knob, it made things worse. I don't know who's deciding what Hype should do for different amps but it rarely fit my idea of a more idealized/polished sound.

 

[Orvillain]

Haven't tried the QC

Reg. the Stadium, I feel the modeling is not quite there. Secondly, wherever I tried the Hype knob, it made things worse. I don't know who's deciding what Hype should do for different amps but it rarely fit my idea of a more idealized/polished sound.

I agree with you on the hype. Sometimes it can sound alright, and it can improve the first impression of the amp. But it very often doesn't go far enough, doesn't do very much, or goes in a direction where I wouldn't have.

I'm not that sauced up on the Focus zones either. I generally think they're crap!

 

[sleewell]

the amount of stuff you can put into one preset is the biggest difference/improvement for me going from the LT to the QC. with the LT i was always struggling to get everything i wanted before running out of room so it was always a compromise. with the QC you can just keep adding blocks and its never an issue for me at least.

 

[dbfretz]

It isn’t a great look that it isn’t blowing the QC away, given its own issues and it being a lot older. I do actually have a stadium on order so I’m looking forward to comparing it to my LT amp wise. If I’m not blown away it’s QC time.

 

[mikah912]

Okay, so I’ve had the opportunity to briefly compare the Stadium XL directly with the Quad Cortex this evening. Running both through an Atomic CLR.

Not a scientific comparison by any stretch, not even a very well thought out one but in the time I had I can’t help but feel that when compared directly, the QC absolutely spanks the Helix sound wise. QC sounds bigger and badder, Helix sounds smaller and boxier.

Can’t directly compare to the original amps but I preferred the 2203, EVH, AC30 and Soldano in the QC across the board. I used the plug-in Soldano in the QC, that amp especially wasn’t even a remotely close fight.

Effects are about on par, pitch (I mainly use dual octaves) we’re better on QC. My delay needs are simple and I liked the QC digital delay with modulation better. Reverbs are better on QC. Drives about the same, but QC captures are better (appreciate proxy is incoming).

Biggest surprise was DSP and what you can cram into a preset. I tested my patches on one line to keep it fair, using pitch, drive, amp, cab, chorus, delay, big reverb, small reverb. Helix had all Agoura models unavailable after this. QC could fit another amp in. Of course there’s differences in how they’re modelled or coded etc but in a real world scenario they’re basically on par, and QC is much older.

Pluses for the Helix are despite the size the hardware is much better, screen is better and shiwcase is a great addition.

Because I haven't owned a QC since 2024, I'm not really going to say it's a fair fight to pit my QC memories against my to-the-date everyday usage of Stadium in terms of amp modeling quality. I can only say that at no point playing Stadium did I "miss" a single QC amp model with the exception of their 5153 models because they got the 6L6 and EL34 versions of the Stealth which is voiced differently than the OG 100W 6L6 that Line 6 chose. And even then, I prefer the "old" HX version of the 5153 over the Agoura.


Ultimately, I'm a Stealth guy. I know nothing of the plug-in expansion Soldano on QC, but I hated the one that came with QC. That much I remember clear as day. Love the Agoura one. Every other great amp sound I remember from QC was a factory capture (specifically the ENGL Blackmore and Inferno captures).

As far as your comparison on DSP, I think a litle additional context is needed. With most Agoura amps, you get access to all channels of the amp in a single block, so you're really getting 2-3 amps there....not just a single. If QC is able to to "fit another amp in", that just means it's maybe on par if not a tier or two less capable.

My very first Stadium preset had a compressor, two big reverbs, multiple delays, multiple pitch blocks (there’s even a dormant PolyCapo at the beginning of the chain), multiple amp channels, dual cabs, and modulating chorus. The DSP will only get more optimized from there.

The rest is just preferences. More than a few cool peeps on this forum gave Stadium a fair shake, but still prefer Fractal or NDSP. Perfectly cool.