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DigiTech GNX4 Guitar Multi-Effects PedalThe DigiTech GNX4 Guitar Multi-Effects Pedal is a full-featured multi-modeling floor effects processor, portable digital 8-track recorder, MIDI drum machine, MP3 player, and 4 in 4 out USB audio computer interface combined into a single package. DigiTech has once again raised the bar in defining the performing/recording guitarist’s ideal workstation. Never before has there been a product that gives the aspiring guitarist the ease and convenience to capture ideas and turn them into masterpieces at such an affordable price.
DigiTech GNX4 Guitar Multi-Effects Pedal Features
- Guitar multi-modeling recording workstation
- 15 guitar amp and 10 bass amp models
- Distortion stompbox modeling
- Hypermodel creation-unlimited tones
- Built-in 8-track digital recorder
- 6 channels of audio streaming via USB (record 4, playback 2)
- MP3 Playback
- High quality mic preamp with 48V phantom power
- Stereo line inputs
- Built-in MIDI Drum machine
- Compact Flash memory storage
- XLR and 1/4 inch stereo outputs with Speaker Compensation
- 80 User/80 Factory Presets
- 24-bit A/D/A converters
- Recorder remote control via optional GNXFC
- Boatloads of bundled software
As a performing guitar processor, the GNX4 is unmatched in its class. At the heart of the GNX4 is DigiTech’s multi-modeling amp and cabinet modeling engine, where the sky is the limit on the number of amp and cabinet models that are available. Combine your favorite amp tone with studio quality effects processing, including the legendary Whammy and you have an unparalleled processing device. Connect to both your onstage amp and the house mixer using both the XLR and 1/4 inch outputs and find out what a huge sound really is.
When you are ready to record, so is the GNX4. Thanks to USB connectivity and the included Pro Tracks Plus recording software, hands-free recording has been taken to the next level. Just press the record footswitch and stream four channels of 24-bit audio to the computer while playing two channels back, all with zero latency monitoring. A high-quality mic input with true +48V phantom power and stereo line inputs let you professionally capture virtually any audio source with ease. For the finishing touch, process your work through world-class Lexicon reverbs courtesy of the Pantheon reverb plug-in provided with both Pro Tracks Plus recording software for PC and BIAS Deck SE recording software for Mac. If you are out jamming with the band, the built-in 8-track recorder can capture the magic riffs that come out of nowhere and save the moment onto the Compact Flash memory card for transfer to the computer later.
The GNX4 also features an advanced MIDI drum machine, providing a vast library of high quality drum kits and patterns to help craft your music with. You can even use your own MIDI files to playback the GNX4’s drums. When not playing drums, the GNX4’s drum machine playback engine can play back your favorite MP3s for something cool to rehearse with or for live performance.
Included Software
- Pro Tracks Plus
- Lexicon Pantheon Reverb Plug-in
- Cakewalk Pyro Express for CD burning
- BIAS Deck 3.5 SE Mac Recording
- X-Edit Editor-Librarian
Front Panel
8 Track Digital Recorder
Record up to eight tracks of guitar, vocals, keyboards, bass, drums, or any acoustic or line level source, all hands-free.
JamMan Delay Looper
The onboard 8-track recorder doubles as a sophisticated delay looper with 8 levels of undo.
Stompbox Modeling
Select from 10 popular distortion stompboxes.
Hypermodels
Use the Warp knob to morph amp and cabinet models together to create your own custom Hypermodels.
MIDI Drum Machine
with multiple patterns and kits and .MID file compatibility for adding your own.
MP3 Playback using the GNX4's drum machine playback engine. MP3s are a perfect way of economizing memory usage for live audio performance or great for practicing and tutorial applications.
Rear Panel
Mic Input
Record your vocal or acoustic performances with this low-noise/high headroom microphone preamp. It features +48V Phantom Power and Input Level control for compatibility with professional condenser and dynamic mics.
1/4 inch Stereo Line Inputs accept keyboards, electronic instruments, or any line level device for recording.
Unbalanced 1/4 inch Outputs
Sends signals to our amp rig onstage while routing the XLR outputs with Speaker Compensation to your house mixer for a truly huge blend of your sound.
XLR Outputs
With Output Level control, Speaker Compensation and ground Lift buttons make the GNX4 the hub of your recording system. Plug in professional powered studio monitors for zero-latency monitoring or feed your house mixer with a balanced signal.
USB Port
USB connectivity provides streaming of six channels of 24 bit audio to and from the computer with zero-latency monitoring.
MIDI In and Out
Control GNX4 parameters, record MIDI sequences to your computer, or control the built-in MIDI drum machine.
Compact Flash Memory Slot
Use for remote recording memory storage or for GNX4 preset storage.
DigiTech GNX4 Guitar Multi-Effects Pedal Details
- 24-bit analog-digital Delta Sigma converters
- Compact Flash Type I compatible card
- MIDI compatible Drum Machine
- 11 simultaneous Effects
- 80 User, 80 Artist Presets, 80 more User with optional CF card
- Guitar Input: 1/4 inch unbalanced
- Mic Input: XLR balanced with phantom power
- Line Inputs: 2 1/4 inch TRS
- Footswitch Connector: 1/4 inch stereo TRS
- Line Outputs:
- 2 1/4 inch Balanced
- 2 XLR Balanced
- Headphone Output: 1/4 inch Stereo
- MIDI: In, Out, Thru
- USB: 1.1
DigiTech GNX4 Guitar Multi-Effects Pedal Specifications
General
- A/D Converter: 24-bit high performance audio
- D/A Converter: 24-bit high performance audio
- Sampling Frequency: 44.1 kHz throughout
- DSP Section: 3 Audio DNA DSP Processors + dedicated 8-Track Engine/MP3 Player/MIDI Drum Machine DSP
- Preset Memory:
- 80 Factory Presets
- 80 User Presets
- 80 Card Presets (using an optional Compact Flash Memory Card)
Digital Connections
- Footswitch: 1/4 inch jack (compatible with optional GNXFC)
- MIDI In: 5-pin Din
- MIDI Out/Thru: 5-pin Din
- Universal Serial Buss (USB): Type B, supports USB1.1 Full Speed (12 MHz Bandwith USB 2.0 compatible)
Compact Flash Memory
- Card Interface: Type 1 (solid state cards)
- 32 MB up to 2 GB
- FAT 16 File Format Only
- *Note: GNX4 is NOT compatible with Type II cards or IBM/Hitachi Microdrives
Analog Input Connections
Guitar Input
- 1/4 inch Unbalanced (Tip-Sleeve)
- Input Impedance: 475 kOhms
Mic Preamp Input
- XLR Balanced (Female XLR, pin 2 Hot)
- Phantom Power: +48V
- Input Impedance: 600 Ohms balanced
- Maximum Input Level: -22 dBu with mic input level (trimpot) set to max, or -2 dBu with mic input level (trimpot) set to max and -20 dB Pad enabled
Line Inputs
- 1/4 inch Balanced (Tip-Ring-Sleeve) or Unbalanced
- Input Impedance: 20 kOhms Balanced, 10kOhms Unbalanced
Maximum Input Level: +22 dBu
Analog Output Connections
Line Outputs
- 1/4 Impedance Balanced or Unbalanced
- Output Impedance: 1 kOhm per side
- Maximum Output Level: +22 dBu
Balanced Outputs
- Male XLR
- Output Impedance: 120 Ohms
- Maximum Output Level: +22 dBu
- Ground Lift Switch: When GND position (pin 1 connects to pin 4 chassis ground)
When LIFT position (pin 1 is lifted meaning it is not electrically
connected)
Headphones
- 1/4 inch Stereo (Tip = Left, Ring = Right, Sleeve = Ground)
100 mW per channel at 50 Ohms
Analog Inputs to Analog Outputs
Guitar Input to 1/4 inch Outputs
- S/N ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- Frequency Response: 20 Hz - 17 kHz (+0 / - 3 dB)
- THD+N: < 0.0018% typical at -4 dBu, 1 kHz, 0 dB input gain
Guitar Input to XLR Outputs
- S/N ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- Frequency Response: 20 Hz - 17 kHz (+0 / - 3 dB)
- THD+N: < 0.0018% typical at -4 dBu, 1 kHz, 0 dB input gain
Mic Input to 1/4 inch Outputs (Mic Dry selected)
- S/N ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- Frequency Response: 20 Hz - 17 kHz (+0 / - 1 dB)
- THD+N: < 0.0015% typical at -10 dBu, 1 kHz, 0 dB input gain
Mic Input to XLR Outputs
- S/N ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- Frequency Response: 20 Hz - 20 kHz (+0 / - 1 dB)
- THD+N: < 0.0018% typical at -18.4 dBu, 1 kHz, 0 dB input gain
Line Inputs to 1/4 inch Outputs (Line Dry selected)
- S/N ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- Frequency Response: 20 Hz - 20 kHz (+0 / - 1 dB)
- THD+N: < 0.0023% typical at +10 dBu, 1 kHz, 0 dB input gain
Line Inputs to XLR Outputs
- S/N ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- Frequency Response: 20 Hz - 20 kHz (+0 / - 1 dB)
- THD+N: < 0.0025% typical at +10 dBu, 1 kHz, 0 dB input gain
GNX4 On-board Digital Recorder
- General Specification: 16-bit, 44.1 kHz (CD quality)
GNX4 USB Recording Specifications
- Bit Depth: supports 16-bit or 24-bit (depends on setup in Recording Software)
- Sample Rate: 44.1 kHz
The following measurements were made using 24-bit mode:
- Line Input to USB (Dry Line recorded to USB)
Analog to Digital Converter Performance:
- S/N Ratio: > 110 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- USB to 1/4 inch Outputs (Audio Playback from USB to GNX4):
Digital to Analog Converter Performance
- S/N Ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
- USB to XLR Outputs (Audio Playback from USB to GNX4)
Digital to Analog Converter Performance
- S/N Ratio: > 106 dB A-weighted; ref = max signal @ 1kHz, 22kHz measurement bandwidth
Power Requirements
- 120 VAC, 60 Hz
Adapter: PSS3-120 (included)
- Power Consumption: 21.0 Watts
Other
- Dimensions (L x W x H): 21.5 x 9 x 3.25 inches
- Unit Weight: 10 pounds
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Rate and Review this Product:
 28 people rated this item  | Mike S. from Ft. Worth, TX | | Overall Ranking: | | Overall:
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| | | Subject: | All in one, and all you will need! | | Quality:
| Hard as a rock, heavy, bigger than I thought it would be. It is built very weel. Knobs feel tight, buttons are solid, plug ins are top notch, truly perfect quality. | | Reliability:
| Only had it a week, but can imagine it will last a lifetime of normal use. | | Overall:
| I was planning on buying a recorder, an amp, and effects seperate. I tried the GNX4 to see if it would work instead. It does. Very well. You will like it and you will be able to play through it immediatley, but you will realize also that this thing can do almost anything and it will take a while to learn how to make it do all of it. Eventually, the tone and sound will be something you are amazed by. | | Playability and Feel:
| You will be able to play through it right away - but realize the expression pedal acts as a volume pedal for many of the presets and if you have the pedal set to volume off and you will immediately assume there is a problem because the presets don't all play. But, you just need to push the pedal so the volume is up and you hear the presets. It becomes easuer to use as you use it. | | Tone:
| Much better than I expected. Much much better than Line 6 right out of the box. You will find a lot of the presets not so usable, but infinitely tweakable - you will get the sound you want and it will not sound processed to hell. | | Finish:
| Like a tank. | | Action:
| Great! | | Skill Level:
| Semi-Pro | | Do you own this product?:
| Yes. | | Date submitted:
| 2/8/09 | |
| | k8888us from Atlanta, GA, USA | | Overall Ranking: | | Price:
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| | | Subject: | Owned this 9 months, just unlocked it's potential.... | | Quality:
| Feels very sturdy, heavy and strong. | | Sound:
| Liked it before, love it now that I have the Guitar World and Guitar One presets. I am going to purchase the MFX Supermodels now. I can't imagine what over 1000 more will sound like. I have a Mesa Dual Rectifier half stack and this thing can sound just like it. You could really plug this into a PA and leave your half stack at home. | | Reliability:
| I have owned it 9 months with no problems. | | Overall:
| Overall I am very pleased with the GNX4. It really has more abilities than I could explore in a lifetime. I am an intermediate player and mainly used a couple of the factory distortion presets and one of the clean presets. The other day I found the Guitar World and Guitar One presets on a website to download. My God what a difference. I got this for Christmas and just was overwhelmed with the abilities of this thing. I just dont have enough time to learn everything. Now that I have downloaded the free presets I can sound like Hendrix, Van Halen, Velvet Revolver, Foo Fighters all with in a click of a mouse. I feel like I just opened my Christmas present all over again. | | Playability and Feel:
| Plays great sound wise. The only thing that is not impressive is the tuner. It isn't very accurate at all. It is very shaky and hard to get it dialed in. That is one of the reasons I wanted this unit. If you are looking for a good tuner you may want to buy that extra. I'm going to the Boss TU-2 | | Tone:
| Tone is great with the presets you can download online for free. | | Finish:
| Looks shiny and new. | | Action:
| I just selected a factory preset and began playing. It was a little challenging to do much more. I needed a few days off from work and no kids to really read the manual and learn how to use it. | | Skill Level:
| Intermediate | | Do you own this product?:
| Yes | | Date submitted:
| 09/16/09 | |
| | Mario from San Antonio, texas | | Overall Ranking: | | Overall:
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| | | Subject: | Perfect for quiet practice, studio, and gigs too! | | Quality:
| Great quality piece of equipment. I've been loyal to Digitech for many years because of their dependability. | | Reliability:
| So far so good. | | Overall:
| I took a chance on a b-stock and it's the best thing i could've done. It's solid and is so versatile. | | Playability and Feel:
| You need to spend some time with this unit and the manual. Neck? | | Tone:
| Spend time with the channels, won't work out of the box. | | Finish:
| Colors are ok. I'm more into dark colors but for the price it's all good. | | Action:
| This isn't a guitar so no action... | | Skill Level:
| Intermediate | | Do you own this product?:
| Yes | | Date submitted:
| 06/29/09 | |
| | Tom from Davis, Illinois, USA | | Overall Ranking: | | Overall:
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| | | Subject: | OUTSTANDING Performance! | | Quality:
| The GNX4 is built like a tank, great features,functionality, and the AMS price is always right! | | Reliability:
| The GNX4 is rock solid and built to last. | | Overall:
| I was looking for a Guitar pedal, and I found the GNX4 Guitar Workstation. What a great value! | | Playability and Feel:
| The footswitches are durable and solid, and the expression pedal is versitle. | | Tone:
| All the pre-set functions are programable, and can be easily changed. Great tone and sound quality. | | Finish:
| The board is tough and durable. | | Action:
| Plug-in and play! | | Skill Level:
| Semi-Pro | | Do you own this product?:
| I bought it last month, and I play every day | | Date submitted:
| 3/8/2009 | |
| | JVL from Schenectady, NY, USA | | Overall Ranking: | | Overall:
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| | | Subject: | Don't count the aging GNX4 out - It is simply awesome! | | Quality:
| This product is very well made and very well thought out. The unit itself is extremely solid. It is intuitive to use the modeling functions and comes with very good software and even a USB cable. X-Edit is very easy to use and is a great way for designing your sounds. I haven't used the recording functions yet but I have little doubt that will be similarly highly functional yet easy to use. More on tone below... | | Reliability:
| Digitech equipment, especially the higher end stuff with metal chassis has never disapppointed. | | Overall:
| I've owned Pod XT, GT-8 and even an earlier GNX3. I went on a tube kick and recently decided to get another modeler and after much thought went with the GNX4 over the newer offerings by Line6 and Boss. The recording aspects did appeal to me, but my primary purpose was to purchase a unit that would provide me with the basis for a live rig and so far I am thoroughly impressed with the GNX4. Two key things that you must keep in mind are 1) you must run this through decent full range speakers such as studio monitors or quality PA type speakers (and NOT the front end of a guitar amp, though going through an effects return would work well too) and 2) the presets REQUIRE tweaking to sound good; usually just dialing in more bass and treble and/or presence. It didn't take long to get everything from Fender and Roland JC tones to hot rodded Marshall and Mesa/Triple Rectifier type tones. Some patience and knowledge of what makes good tone will pay off! | | Playability and Feel:
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| Semi-Pro | | Do you own this product?:
| Yes - Purchased from American Musical (great price, fast shipping) | | Date submitted:
| 1/31/09 |
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