Helix Floor vs Stadium vs Quad Cortex: Which Fits Your Rig?
23 hours ago
19 min read
Helix Floor is the best value for effects, connections and stage control, Helix Stadium Floor is the stronger current Line 6 rival to Quad Cortex, and Quad Cortex remains the lightest choice for Neural Capture. Stadium costs close to Quad Cortex and adds Agoura modeling, an eight-inch touchscreen and Proxy cloning, while the original Helix Floor costs much less and includes a built-in expression pedal. This Helix Floor vs Stadium vs Quad Cortex comparison covers sound building, routing, snapshots, recording, live control and the extra gear each setup may need.
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Table of contents
Helix Floor vs Stadium vs Quad Cortex in 2026
This comparison covers the original Line 6 Helix Floor, the newer Helix Stadium Floor and the Neural DSP Quad Cortex. The original Floor remains a current Line 6 product, although its latest firmware is Helix/HX 3.80 from November 19, 2024. Stadium Floor is on the newer Agoura system, while Quad Cortex is currently on CorOS 4.1.1, released September 16, 2026. This distinction matters because Helix Floor and Stadium Floor share part of the HX catalog but are not the same generation.
At the time of writing, the Line 6 Helix Floor is €1,199 at Thomann, Helix Stadium Floor is around €1,600 at Thomann, and the Neural DSP Quad Cortex is €1,669 at Thomann. Stadium and Quad Cortex are therefore the closest price comparison. The original Helix Floor costs about €400 less than Stadium and roughly €470 less than Quad Cortex. Prices vary with country, VAT and promotions, so check the amount shown by Thomann before ordering.
The original Helix Floor includes an expression treadle, four send/return pairs and a broad set of stage connections. Its size calls for a larger case, but the internal power supply uses a common grounded IEC cable. Stadium Floor is almost half the weight and also uses an internal IEC supply, although it drops the built-in treadle and reduces the effects loops from four to two. Quad Cortex is smaller again, but its external 12V DC adapter and optional expression pedal need space and secure mounting.
The broad choice now falls into three clear price and workflow levels. Start with the original Helix Floor when value, effects and control of external equipment matter most. Choose Stadium Floor when you want the Line 6 workflow with Agoura amps, Proxy cloning, touch editing and the newer software system. Choose Quad Cortex when Neural Capture, compatible Neural DSP plugin devices and the lightest possible floor rig matter more than extensive physical control.
Amp models, Proxy, Neural Capture and sound quality
The original Helix uses dual-SHARC processing and HX component and behavioral modeling, which models circuit parts and how they interact. Helix Stadium Floor keeps the HX models but adds Line 6's newer Agoura modeling. Its Hype control can move an Agoura amp between a close representation of the source and a more idealized response. Stadium firmware 1.4 brought the total to 67 Agoura amp channels alongside 111 HX channels.
Stadium also adds Proxy cloning, which the original Helix Floor does not have. Proxy creates four types of clone: Amp+Cab, Amp, Preamp and Distortion. An Amp+Cab clone includes the amplifier, physical speaker cabinet and microphone as one complete captured chain, while an Amp clone contains no speaker cabinet and normally needs a separate Cab block or IR. Proxy does not create a standalone clone of any speaker cabinet in the same way that it clones an amplifier.
Creating a Proxy clone requires Stadium to connect through Wi-Fi or Ethernet and sign in to a Line6.com account. Stadium sends test signals through the connected gear and collects its data, then uploads that data to Line 6 servers. The server may place the job in a queue, processes the clone and downloads the finished file to Stadium's internal library. This means the capture and server-training stage needs an internet connection, even though the finished clone becomes a file you can load in a preset.
Quad Cortex combines adjustable Virtual Devices with Neural Captures learned from a physical amp, cabinet or overdrive at its tested settings. A capture is not a fully editable circuit model, so changing its controls is not the same as turning every control on the original amplifier. Neural Capture V1 trains locally and works offline, while V2 starts from Cortex Control and uses Cortex Cloud for training. V2 usually takes around ten minutes and currently allows 40 sessions per user each day.
An impulse response is different from all three modeling and cloning systems. An IR normally represents the speaker, cabinet and microphone part of a chain, while an amp model supplies the gain structure and amp controls. All three processors can build model-and-IR rigs. The original Helix Floor can load an IR but cannot capture the amp, while Stadium and Quad Cortex can copy supported physical gear through Proxy or Neural Capture.
A fair sound comparison needs one recorded DI performance, the same monitoring chain and carefully matched output levels. Test comparable models through the same cab or IR with clean, edge-of-breakup and high-gain tracks, then listen both solo and inside a mix. A separate Proxy or Neural Capture test is useful, but it should not be presented as a direct model-to-model comparison. Monitoring, gain staging, cabinet choice and preset construction can outweigh a small difference between comparable amp models.
Never connect a tube amplifier speaker output straight to Stadium or Quad Cortex. Keep a suitable speaker or load attached and use the connection method specified by the manufacturer. A correctly rated reactive load box may be needed when the amplifier has no suitable line or DI output. Check the full cloning or capture diagram before switching on the amplifier.
Neural DSP's Neural Capture | Quad Cortex Studio Demo shows the Neural Capture process in a studio and lets you hear the captured rigs in a musical setting. It helps separate the capture side of Quad Cortex from its regular Virtual Devices before comparing it with Proxy or HX models.
Helix Floor: HX models, no amp cloning
Stadium Floor: HX and Agoura models with Amp+Cab, Amp, Preamp and Distortion Proxy clones
Quad Cortex: Virtual Devices with Neural Capture V1 and V2
Neural Capture V1 works locally and offline
Proxy creation and Neural Capture V2 require an account and internet access
Neural Capture | Quad Cortex Studio Demo
Effects, cabinets and a tone you can use
The original Helix currently has the larger clearly stated effects collection, with Line 6 listing 96 amp models and 268 effects in its comparison chart. Stadium 1.4 has 67 Agoura amp channels and 111 HX amp channels, for 178 channels in total, plus more than 260 effects. These units are not directly comparable because a model can contain several selectable channels. The figures do not prove that Stadium has nearly twice as many separate amplifier models as the original Helix, and raw totals still do not tell you whether a processor contains the particular drive, pitch effect or reverb your songs need.
A useful direct preset on any of the three starts with Input Guitar, compressor, drive, amp, cabinet or IR, stereo delay, stereo reverb and an output to the PA. Original Helix can send its Multi output to the quarter-inch, XLR, digital and USB 1/2 destinations together. Stadium uses two main paths and a Matrix Mixer for its main quarter-inch, XLR and headphone feeds. Quad Cortex places a fixed input at the left of a Grid row, the devices across that row and an output at the right.
None of the processors gives every preset unlimited processing. The current Line 6 chart allows up to 32 simultaneous original Helix blocks, DSP permitting, across Paths 1A, 1B, 2A and 2B. Stadium uses dynamic DSP across its two main paths, while Quad Cortex has four rows with eight device slots each. Demanding amps, pitch devices and reverbs can limit any visible layout before every slot is filled.
Cabinet and level choices need the same attention as the amp model. When two rigs use different IRs or one output is slightly louder, it is easy to credit the processor for a difference caused elsewhere. Start with one shared IR when comparing amps, then test each unit's stock cabinets separately. For a working preset, choose the cabinet that fits the band mix rather than the one that sounds largest by itself.
Effects-heavy players can still find the original Helix attractive because it costs less while retaining the mature HX catalog. Players who want ready-made delay and modulation sounds can start with our Line 6 Helix AURA presets. Stadium can import individual presets, setlists and favorites exported from Helix/HX version 3.50 or newer, but it cannot directly import a complete Helix/HX backup. Stadium presets, including presets that use Agoura models or Proxy Clones, are not backward-compatible with the original Helix Floor/HX platform.
Imported presets do not always produce the same sound or control behavior. Stadium replaces older Hybrid cabs with an equivalent new cab that Line 6 says will sound different, and an imported IR block does not automatically load its original IR file. Four older Helix/HX EQ types are replaced with Stadium's seven-band Parametric EQ while retaining their settings. Keep the original files, move the IRs separately and check every preset, snapshot, controller assignment and output before relying on an imported set at a show.
Line 6's Helix Floor and Rack Overview | Paul Hindmarsh | Performance plays the complete track used for the official Floor and Rack overview, so you can hear a finished Helix arrangement rather than isolated models. Line 6 also keeps more official demo, studio and artist videos on its Helix resources page.
Line 6 | Helix Floor and Rack Overview | Paul Hindmarsh | Performance
Routing three real rigs on all three modelers
All three processors handle a simple stereo PA rig, but the original Helix gives you the most physical effects-loop connections. Its four stereo signal paths can run in series, split in parallel and feed as many as four output blocks. Stadium Floor has two main paths, two mono sends and two returns, while Quad Cortex offers four Grid rows with two sends and two returns. Our explanation of Helix paths, splits and stereo routing covers the Stadium signal-flow system in more detail.
Stereo direct and separate monitor feeds
For a direct original Helix preset, run the amp and cabinet into stereo delay and reverb, then use Multi when the same processed signal should reach several destinations. Stadium can feed its Matrix Mixer and create separate levels for its main output layers. Quad Cortex can route a row to its XLR outputs and send another row or split to quarter-inch outputs 3/4. Keep a final level control on each destination so soundcheck changes do not alter the tone inside the preset.
Two amps and a wet/dry rig
A two-amp song preset needs both amp blocks loaded before the song begins. On either Helix generation, split the path, place one amp on each branch, then use bypass or mixer levels to choose and blend them. Quad Cortex can use two Grid rows or a split route, with each Scene storing the required bypass and parameter values. Snapshots and Scenes cannot exchange one amp device for another because the preset structure stays fixed.
For wet/dry use, send one branch with the amp and cabinet directly to its own output. Put delay and reverb on the second branch and route that to another output pair. Check that both branches stay aligned and do not create an unwanted level jump when combined by the engineer. Stadium's Matrix Mixer adds another place to manage its physical output feeds.
Four-cable method and external pedals
A basic four-cable setup places effects around the real amplifier's preamp. Connect the guitar to the modeler, use a send for the amp input, return the amp's effects-send signal to the modeler, and send the final result to the amp's effects return. Original Helix has four send/return pairs, so it leaves more connections for external pedals or another amplifier. Stadium Floor and Quad Cortex each provide two sends and two returns, which is enough for ordinary mono 4CM or one stereo loop but gets used sooner in a complicated pedal setup.
Also check
Snapshots and Scenes keep one song inside one preset
Each original Helix preset, Stadium preset and Quad Cortex preset provides eight within-preset states. Helix snapshots store block bypass states, assigned parameter values, Command Center states and optional tempo. Stadium snapshots follow the same basic idea and can also work with its Showcase automation system. Quad Cortex Scenes store bypass and assigned parameter values while leaving the Grid structure in place.
A practical Helix song preset can use CLEAN, EDGE, RHYTHM, LEAD, AMBIENT CLEAN, AMBIENT LEAD, DRY RHYTHM and SWELL as its eight snapshots. Load both amps if the song needs them, then assign amp Gain, Channel Volume, drive bypass, delay Mix and Feedback, reverb Mix and the final output or merge Level to Snapshot control. Enable Trails where the delay or reverb should continue, level-match every state and save the preset. For ready-made ambient sounds on the original Helix family, our Line 6 Helix Reflections reverb presets provide twelve reverb-based presets.
Stadium keeps eight snapshots but adds Showcase, which can recall presets and snapshots from flags placed along a song timeline. A Showcase song can also contain as many as eight mono or stereo audio files for backing tracks and other playback. This matters for arranged shows where the processor must follow a fixed structure without manual switching. The original Helix Floor has snapshots and Command Center but does not have the same integrated Showcase playback system.
Use the same eight names for Scenes A–H on Quad Cortex. Open a device, tap-hold a parameter to assign it to Scenes, then enter the value required for each state. Gig View can rename, recolor, copy and swap the Scenes. If bypass behavior seems wrong, check SCENE BYPASS BEHAVIOR rather than rebuilding the preset.
Full Scene Mode gives Quad Cortex eight Scenes, while Hybrid Mode can place Scenes on one switch row and Stomps on the other. Original Helix offers comparable Snap/Stomp and Stomp/Snap layouts through Global Settings. Stadium has Snapshot, Stomp and Combo footswitch modes, with its eight-inch display showing the assignments that the compact Floor model cannot show on individual scribble strips.
Within-preset snapshots and Scenes avoid the normal interruption of loading a complete preset. A full preset change may still interrupt the old processing, so do not build a song around separate presets when delay tails and continuous audio matter. On all three devices, test every state through the same outputs you will use on stage.
Line 6's Learning with Line 6 | Helix - Snapshots explains what snapshots control, Snapshot Block Bypass, edit behavior and snapshot reselect. It is useful before building the eight-state song preset described above.
Learning with Line 6 | Helix - Snapshots
Editing and live control favor different players
Quad Cortex is fast when you prefer direct touch editing. Its seven-inch multi-touch display and 11 footswitches, which also work as rotary controls, let you select, move and edit blocks without navigating many hardware pages. Cortex Control brings the same rig management to a computer. The touch-first design is useful during rehearsal when a gain or routing change needs to happen quickly.
Helix Stadium Floor has a high-resolution eight-inch touchscreen with eight parameter knobs below it. Focus View provides extra controls, meters and graphical feedback for supported blocks. The compact Stadium Floor does not have the OLED scribble strips or built-in expression pedal found on Stadium XL, so its Play view displays the current footswitch labels on the main screen. It supports two external expression pedals.
The original Helix uses a joystick, dedicated encoders, capacitive-touch footswitches and 13 scribble strips. Touching a switch can select its assignment before you press it, while the strips show what the switches will do. HX Edit makes longer editing sessions and backup work easier at a computer. The hardware is older, but its built-in treadle and labels still reduce the amount of extra gear needed on stage.
Using the makers' official dimensions, original Helix measures about 22.05 by 11.85 by 3.6 inches and weighs roughly 14.6 lb or 6.6 kg. Stadium Floor measures 16 by 9.5 by 3.2 inches and weighs 7.5 lb or 3.4 kg. Quad Cortex measures 11.4 by 7.7 by 2.7 inches and weighs 1.95 kg, making it the easiest of the three to fit in a small carry-on rig.
Original Helix offers four sends and returns, two extra expression inputs, external amp switching, CV/expression output, MIDI In and Out/Thru, Variax, S/PDIF and AES/EBU or L6 LINK. Stadium Floor has two loops, two expression inputs, two external amp-control outputs, an XLR mic preamp, S/PDIF, MIDI, USB-A, USB-C, removable microSD storage and the Nexus expansion port. Quad Cortex has two expression inputs, dual mic-capable combo inputs with phantom power, two sends and returns, MIDI, headphones, USB and a dedicated Capture Output.
For touring, export current backups and carry a fallback that can reach the PA if the main processor fails. Original Helix offers the most self-contained control surface, Stadium offers the newest Line 6 editing and automation tools, and Quad Cortex saves the most luggage space. Budget for an expression pedal with Stadium or Quad Cortex if your set uses wah, volume or pitch control.
Our Line 6 Helix Stadium For Beginners: The Complete Course | FULL TUTORIAL walks through the touchscreen, presets, snapshots, routing and stage controls step by step. It gives you the wider Stadium workflow after the hardware differences in this section.
Our complete Helix Stadium course covers the touchscreen, presets, snapshots, routing and stage controls.
Recording, reamping and software support
Helix is an 8-in/8-out USB 2.0 interface that works at up to 24-bit/96kHz. Its normal Multi output sends the processed stereo sound to USB 1/2, while USB 7 or 8 can carry a dry DI. Record USB 1/2 to a stereo wet track and USB 7 to a mono DI track at the same time. For reamping, send that DI from the DAW to USB 3/4, select USB 3/4 at the Helix Input block and record the new processed return.
Stadium Floor is also an 8-in/8-out, 24-bit USB interface. On Windows, its ASIO driver supports 44.1, 48, 88.2 and 96kHz operation, while its Mac Core Audio connection runs natively at 48kHz. USB 1/2 can carry the processed sound and USB 7 or 8 can record a dry DI. Reamping works by sending the DI to another USB pair, selecting that pair at the Stadium input and recording the processed USB 1/2 return.
Quad Cortex is an 8-in/8-out USB interface operating at a fixed 24-bit/48kHz. Its standard mapping sends dry analog Inputs 1 and 2 to host inputs 1 and 2, while processed Output 1/L and 2/R arrive at host inputs 3/4. For reamping, send the DI to host Output 5, select USB Input 5 on the Grid and record the wet return from inputs 3/4. The I/O Settings > DRY/WET option can swap the dry and processed mapping between USB 1/2 and 3/4.
All three make simultaneous DI and processed recording straightforward once the DAW channels are labeled. Original Helix remains useful when its extra digital connections belong in the studio plan. Stadium provides the newer Line 6 sound engine and a familiar DI workflow, although Mac users should note its native 48kHz operation. Quad Cortex covers a normal 48kHz guitar session and makes the dry feed easy to find.
HX Edit handles the original Helix hardware, while Helix Native can share compatible presets with that Helix/HX system when the models and available DSP allow it. Stadium uses the Helix Stadium application and works with Helix Stadium Native, which supports Agoura models and Proxy clone loading. Helix Native and Helix Stadium Native are separate systems, so compatibility with one does not mean compatibility with the other. Cortex Control edits and manages Quad Cortex, and Cortex Cloud handles backups, shared content and Neural Capture V2 training. Compatible Neural DSP plugin devices require ownership of the matching plugin license.
Helix/HX 3.80 introduced six new amp models, four cabinets, the Teardrop Bass Q wah effect and several bug fixes. It remains the latest firmware for the original Helix Floor. Stadium 1.4 added 14 Agoura amp channels from six amplifiers, six effects and several workflow changes, followed by maintenance updates. CorOS 4.1.0 added more than 70 plugin devices, eight free Virtual Devices and over 2,000 Factory Device Presets, while CorOS 4.1.1 fixed resource warnings and several device issues.
Neural DSP's First look at CorOS 4.1.0 for Quad Cortex and Quad Cortex mini demonstrates the new plugin devices, Device Presets, Virtual Devices and workflow changes. It shows what the current software adds beyond the original Quad Cortex feature set.
Neural DSP demonstrates the plugin devices, Device Presets and Virtual Devices added in CorOS 4.1.0.
Which modeler fits your rig?
Original Helix Floor fits cover bands and effects-heavy players who need many sounds underfoot without reaching the price of the other two units. Its scribble strips, built-in treadle, snapshots and Command Center make a complicated show easier to operate without another controller. Four loops also leave more room for favorite pedals and a real amplifier. Our Line 6 modeler comparison shows where the original Helix sits beside other Line 6 choices.
Stadium Floor fits players who want the newer Line 6 system without paying for the larger Stadium XL. Agoura modeling, Proxy cloning, the touchscreen and Showcase are meaningful upgrades over the original Floor. It is also much lighter. It retains an internal IEC power supply and can import supported legacy Helix/HX presets, although the source must be exported from version 3.50 or newer. Full backups cannot be imported directly, Hybrid cabs sound different after replacement, IR files need manual reassignment and some older EQ blocks are converted. The trade-offs are two fewer effects loops, no built-in treadle and no individual scribble strips.
Quad Cortex fits players who own an amplifier or pedal they want to capture with Neural Capture. It also suits a fly rig, compact home studio or touring setup where every kilogram matters. Touch editing and current plugin-device support shorten the route from a computer-based Neural DSP setup to hardware. Remember to include an expression pedal, suitable case and secure power arrangement in the total cost.
Studio users should choose around the recording system rather than model counts. Original Helix offers up to 96kHz operation and several digital connections. Stadium also reaches 96kHz through its Windows ASIO driver, adds Agoura and Proxy, and has a mic preamp. Quad Cortex offers Neural Capture and dual mic-capable inputs in the smallest box, but its USB interface stays at 48kHz.
An existing Helix user should not change systems only because Stadium or Quad Cortex is newer. Move to Stadium when Agoura, Proxy, Showcase, the touchscreen or lower weight solves a specific problem. Move to Quad Cortex when Neural Capture, compatible plugin devices or its smaller format matters more than the Helix control surface. Keep the original Floor when your set already depends on its four loops, scribble strips, built-in treadle and Command Center.
At current Thomann prices, Stadium Floor and Quad Cortex compete directly. Stadium is the stronger choice for someone who wants the Line 6 workflow, newer amp models and integrated show playback. Quad Cortex is stronger when Neural Capture and minimum size lead the list. The original Floor remains the value choice because it is about €400 to €470 cheaper while still providing a complete stage rig. Players who want ready-made effects sounds can also explore our Helix Aura, Reflections and HELL-X preset bundle.
Neural DSP's Quad Cortex Factory Captures with Tuomas Wäinölä & Matias Kupiainen plays factory captures created with the two guitarists. Neural DSP notes that the delay and reverb heard in the studio monitoring chain were added around the captures rather than captured by Quad Cortex, so the video is most useful as an official example of its amp and drive capture sound.
Choose Helix Floor for value, four loops and a built-in treadle
Choose Stadium Floor for Agoura, Proxy, Showcase and touch editing
Choose Quad Cortex for Neural Capture and the lowest weight
Compare Stadium and Quad Cortex when your budget is around €1,600
Price the expression pedal, case, power and plugins before comparing totals
Keep your current system unless another unit solves a real rig problem
Quad Cortex Factory Captures with Tuomas Wäinölä & Matias Kupiainen
Our verdict
Choose Helix Floor for value and stage control, Stadium Floor for the newest Line 6 sound and workflow, or Quad Cortex for Neural Capture and minimum weight.
Pros
Helix Floor offers strong value
Stadium adds Agoura and Proxy
QC captures physical amps
Eight song states on all three
All support wet and DI recording
Cons
Helix Floor is large and heavy
Stadium lacks a built-in treadle
QC needs an expression pedal
QC records only at 48kHz
Should you buy Helix Floor, Stadium or Quad Cortex?
Buy the original Helix Floor when the processor must control the rest of your stage rig and price matters. Its effects collection, physical labels, built-in expression pedal, four loops and flexible connections remain useful beside much newer processors. You must accept the larger case, heavier carry and lack of amp cloning. Players looking for complete amp-based rigs can also explore our Line 6 Helix Legendary Presets.
Buy Helix Stadium Floor when you want the strongest current Line 6 alternative to Quad Cortex. It costs about the same, adds Agoura amps, Proxy cloning, an eight-inch touchscreen and Showcase, and weighs much less than the original Floor. It makes the most sense for a Helix user who wants the new sound engine without leaving the Line 6 workflow. Allow for an external expression pedal and the reduction from four effects loops to two.
Buy Quad Cortex when capturing your own equipment or traveling with the smallest high-end rig matters most. Its Scenes, Hybrid Mode, desktop editor and plugin support now cover much more than early reviews suggest. The extra cost over the original Helix makes sense when Neural Capture or the lower weight changes how you work. Against Stadium, the choice comes down mainly to Neural Capture and plugin devices on one side, or Agoura, Proxy and Showcase on the other.
Compare Helix Stadium Floor at Thomann
Helix Stadium Floor now sits close to Quad Cortex in price while adding Agoura modeling, Proxy cloning and Showcase. Check its current local price before deciding whether those features justify the step up from the original Helix Floor.
More information
Frequently Asked Questions
Which is best: Helix Floor, Stadium Floor or Quad Cortex?
Helix Floor is best for value and extensive stage control, Stadium Floor is the strongest current Line 6 all-rounder, and Quad Cortex is best for Neural Capture and portability. The right choice depends on the connections, cloning system and physical controls your rig needs.
Is Helix Stadium Floor a fairer Quad Cortex comparison?
Yes. Helix Stadium Floor costs close to Quad Cortex and competes with Agoura modeling, Proxy cloning and an eight-inch touchscreen. The original Helix Floor costs much less and belongs in the comparison mainly as the established value option.
Is Quad Cortex better than the original Helix Floor?
No, not for every rig. Quad Cortex is better for amp capture, portability and touch editing, while Helix Floor provides more effects loops, a built-in expression pedal, scribble strips and deeper control of external equipment.
Can Helix Stadium capture an amplifier?
Yes. Helix Stadium uses Line 6's Proxy system to create Amp+Cab, Amp, Preamp and Distortion clones. Amp+Cab captures the amplifier, physical speaker and microphone together, while an Amp clone excludes the speaker and normally needs a separate Cab block or IR. Proxy does not make a standalone cabinet clone.
Does Proxy cloning need an internet connection?
Yes, while you create a new clone. Stadium collects data from the connected gear, uploads it to Line 6 servers for processing and downloads the finished clone file. You must connect Stadium to Wi-Fi or Ethernet and sign in to a Line6.com account for this process.
Is Proxy the same as Neural Capture?
No. Proxy is Line 6's cloning system for Helix Stadium, while Neural Capture belongs to Quad Cortex. Both copy the response of supported physical gear, but their files and workflows are not interchangeable.
Does Quad Cortex sound noticeably better than either Helix?
Not necessarily. Cabinet choice, output level, monitoring and preset construction often matter more once the band is playing. Compare the same DI, matched levels and the same IR before judging comparable amp models.
What is the difference between Helix snapshots and Quad Cortex Scenes?
Both store eight variations inside one preset without changing its block structure. Both Helix generations use snapshots, while Quad Cortex uses Scenes. Stadium also adds Showcase for recalling presets and snapshots along a song timeline.
Which modeler has the best live controls?
The original Helix Floor has the most self-contained controls because it includes scribble strips, a treadle and four effects loops. Stadium adds touch editing and Showcase but needs an external expression pedal. Quad Cortex is the smallest, although it also relies on its screen and an optional external pedal.
Which is better for recording and reamping?
Original Helix supports up to 96kHz and provides several digital connections. Stadium supports up to 96kHz through its Windows ASIO driver but runs natively at 48kHz on Mac. Quad Cortex provides clear wet and DI routing but is fixed at 48kHz.
Should an existing Helix user move to Stadium or Quad Cortex?
Only when the new system solves a specific problem. Stadium is the easier move when you want Agoura, Proxy, Showcase and a touchscreen while keeping the Line 6 workflow. Quad Cortex makes more sense when Neural Capture, plugin devices and minimum weight matter most.
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