Choose the Musical Partner Destined to Deliver that Perfect Performance
From the legendary Donca-matic to the world’s most popular workstations, KORG has spent decades innovating new technologies designed to propel every keyboard performance to the highest level of excellence. KORG’s flagship Pa4X Professional Arranger continues this tradition with incredible refinements to every aspect of the sound quality—and with enhanced performance capabilities. The Pa4X Professional Arranger is more than a keyboard. It’s your backup band; your accompanist; and your musical director. It’s your soundman; your effects engineer; and your always in-tune background singers.
Best of all—you’re always in charge!
Ideal for composing, recording, and combo use, the intuitive Pa4X really comes to life in the hands of the solo keyboard performer and entertainer. And nowhere else is the flawless operation and superior sound of one keyboard instrument more in the spotlight. To that end, every aspect of KORG’s industry-leading Professional Arranger series has been re-examined and improved, resulting in the Pa4X—an instrument without equal. The all-new EDS-X (Enhanced Definition Synthesis – Expanded) sound engine delivers unprecedented realism and highly detailed sounds, drawing on a massive PCM resource over 10 times larger than those found in previous models. KORG’s exclusive DNC (Defined Nuance Control) provides highly-articulate solo instruments. Partnerships with Waves Audio and TC Helicon provide state-of-the-art audio processing and vocal effects. Plus, there are tons of new instruments and drumkits, along with a massive infusion of Styles to cover a world of musical genres.
Pa4X Operating System v2.0
Pa4X Operating System v2.0 introduces new exciting features, improves the existing functions, and streamlines the user interface. In addition, new Sounds and Styles are introduced. This new OS version makes the instrument easier to play, and much more versatile.
Pa4X OS version 2.0 – Introduction Video
New Styles, Sounds, and Drum kits
New Styles, including many in the Pop, Ballad and Dance genres. Most existing Styles have been revised and improved. The new Styles are very modern sounding. The Dance Styles are particularly suited to the new KAOSS FX.
New Sounds and Drum Kits, most based on new sampling sessions, including a very expressive Italian Grand Piano, several majestic Church Organs, very realistic Saxophones, Accordions and Bandoneon, and new Synth Leads and Pads. And you now get one more User Drum Kit bank, with 128 additional locations (for a total of 256).
Style editing is now easier, with an improved test mode and the Mixer/FX editing pages also available inside the Style Record mode. You can now edit a Style without having to jump between the Style Play and Record modes. You also get an overview of the recorded chord variations in the Chord Variation page.
Totally unseen before, the KAOSS FX gives you creative control on your performance. From subtle morphing between Variations and Drum Kit types, fine mixing between accompaniment Sounds, live reshaping of ongoing rhythms, to the most radical note-crunching effects of DJ heritage, to tape delay and arpeggios, you can add ‘liquid mixing’ to any Style or MIDI Song with the aid of easy-to-use computer-assisted composition features. Break the boundaries of preset music!
The KAOSS FX are also available when recording a MIDI or MP3 Song, so that your performance will be preserved.
Style Creator Bot, Chord function , Chords Sequencer
The Style Creator Bot (formerly known as the MIDI Song to Style Converter) now automatically creates a Style from a MIDI Song, while also creating a Chord Sequence from the Song’s chords.
The Detect Chord function scans the MIDI Song’s tracks for chords, then saves them as Chords events to be read in the Lyrics or Score page. This is especially useful to add chord abbreviations to Songs that do not have them, or to realign the chord abbreviations after transposing a Song.
Chord Sequencer playback and recording has been improved. It is now much easier using it, and a small symbol now shows if a sequence is currently available.
Updated User and Direct Banks
The Split Point can now be saved with each Keyboard Set. This means a different Split Point for each of the Keyboard Sets recalled with a Style or SongBook Entry, allowing for a finer adjustment of the instrument’s natural range.
User and Direct banks can now be renamed, to allow for a more personalized set of custom Styles, Pads and Keyboard Sets. Custom names appear in the Selection windows, and make finding items much faster.
MIDI connection can now also be done through the USB HOST ports (in addition to the USB DEVICE and the MIDI ports). This allows for easy connection of controllers like digital pianos (for example, our HAVIAN 30), or the KORG nano and micro series, with no need of special adapters.
Adjusting the microphone audio input gain is now easier and more accurate, thanks to the detailed Mic Input meter.
Additional preferences make a performance fit better your style, with more options for the Style To Keyboard Set Mode, MIDI IN Note Off Velocity, and the Video Interface Mode (now saved when turning the instrument off).
This update also carries a bunch of minor bug fixes and improvements, making the operations smoother.
Get OS updater
* Important Note on updating your Pa4X
Depending on the production lot of your keyboard, the Pa4X accepts the update package with one of these two extensions: “PKG” or “UPD”.
To know which type of package your Pa4X requires turn it on while pressing and holding INTRO 1. After the calibration procedure the display will ask you to select either “a valid PKG file” or “a valid UPD file”. To avoid any damage to your Pa4X, download and install only the required package and be sure to follow the instructions provided.
The New Pa4X
From the original SAS-20; through the i, iS, and iX Series; to the highly acclaimed Pa Series; KORG’s arranger keyboards have been used by hundreds of thousands of music professionals across the planet. The Pa4X honors this rich history with powerful new technology and progressive input and ideas from leading performance musicians from around the world. The result is a combination of unbeatable sound quality, intuitive control, and innovative features—all housed in a modern, strong, and stylish aluminum case.
Sound quality at its best
The Pa4X relies on KORG’s advanced EDS-X (Enhanced Definition Synthesis-eXpanded) sound engine, and comes complete with over 1,500* ready-to-play sounds. This realistic collection offers a vast gathering of classic and contemporary keyboards, band and orchestral instruments, plus electronic and acoustic instruments—from techno to folk. Included is a new multi-layer stereo grand piano (with damper and body resonance), plus electric pianos from the acclaimed KORG SV-1 Stage Piano. The digital drawbar organ includes key on/off noises, leakage, and Rotary Speaker emulation. In addition, the Pa4X has been equipped with new wind instruments, strings, basses—even acoustic and electric guitars. Sounds have been painstakingly captured using state-of-the-art methods that allow the finest of details to be accurately reproduced.
Three assignable switches, the four-way joystick—even a ribbon strip—allow KORG’s unique DNC (Defined Nuance Control) to reproduce the subtle nuances and articulations of acoustic instruments creating ultra-realistic performances rich in expression—all in real time and on demand. Bring any solo or melody to life with the growl of a passionately-played saxophone; the changing embouchure of a trumpet; the breath elements found in a clarinet or harmonica; and the added characteristics that give extra authenticity to the pizzicato and arco sounds of a string section. More than 90* authentic drumkits—including Ambient Drums—breathe life into any rhythmic passage; the Drum Family Easy Editing feature offers total control over volume, pitch, EQ, and more. An additional 400 MB* of user memory allows new sounds to be added quickly and easily using KORG, WAV, AIFF, and SoundFont™ formats. Conduct your own sampling session and take advantage of the complete sample recording and editing features found in the Pa4X.
Slim, powerful and easy to use
Both the Pa4X 76 and Pa4X 61 feature a naturally-responsive and semi-weighted keybed that provides both velocity and aftertouch sensitivity. The dynamic response is adjustable to accommodate any playing technique and any level of musicianship—from the hobbyist to the demanding professional. The main panel has been optimized to ensure that all controls are ergonomically positioned and intuitively located to make every performance feel smooth and natural. Big, bright, and bold, the new capacitive TouchView display hosts a redesigned graphical interface that is easier than ever to read, even under the most demanding lighting environments.
The entire screen can be tilted forward and back to provide the perfect angle for optimum viewing—on stage or off! Searching for that song, Style, or file that you were just using? The multi-function Search feature can find what you are looking for—quickly! Styles and Keyboard Sets can be read directly from a USB drive—without the need to load data in the internal memory.
For those seeking an all-in-one solution, experience the optional PaAS Speaker System. This easy-to-use add-on provides spectacular sound for home and rehearsal use—or as a personal performance monitor. The bi-amped PaAS sound system contains five loudspeakers in a sleek cabinet that attaches directly to your Pa4X. Best of all, installation takes only seconds; no tools are required; no cables are needed, and no power supply is necessary.
Do it with Style
Each Style is a fully realized musical environment dedicated to reproducing a specific musical genre, and the Pa4X is packed with over 500* of them. Play along with these styles which cover song styles from around the world, from the past right up to today. These highly-versatile Styles have been created by KORG’s international sound team to provide an extremely musical experience. New Styles have been added, and many cherished Styles have been brought up to date with new sounds, enhanced effects, and re-balanced mixing. In addition to drums, percussion, and bass, each Style can provide up to five additional instrument parts that follow your chord changes and voicings, as well as the tempo. Guitar Mode 2 makes the Style’s guitar tracks more authentic than ever before possible. In addition, each Style can be enhanced by using the four Pads. Each Pad can add a one-time or repeating riff, a percussion part, an accent sound, or even a sound effect. You can even program your own Pad riffs and phrases. And of course, each Style features an assortment of Intros, Variations, Breaks, Fill-Ins, Endings—even a count-in. You may also create your own brand-new Styles, or customize the existing ones. The convenient Chord Sequencer function can quickly record and loop your chord progressions on the fly in Style Play mode; this can be useful not only for practice, but for freeing up your left hand while performing live. These Chord Sequences can now be also saved as Style and SongBook entries for easy recall.
The latest Styles – today!
Thanks to an all new built in SMF (Standard MIDI File to Style converter), you can quickly and easily have on board styles of the latest songs! Just obtain a new Standard MIDI File, load it into the Pa4X and the inbuilt converter will easily and quickly turn it into a full KORG style which you can save and recall any time you need it. Every function band musician will love the combination of latest styles and incredible KORG sound!
KORG is known for studio-quality effects, and the Pa4X includes the best of the KORG library. 4 Insert and 3 Master effects can be used for the accompaniment tracks, while 1 Insert and 2 Master effects can be used for the real-time keyboard tracks. Over 140 effect types are available, including reverbs, delays, vintage stomp box simulations, amp and cabinet simulators and more. In addition, each track features an EQ with Low, Mid and High controls, and a custom track EQ can be memorized in the Song Play mode—allowing your song to sound its best in any environment. The final effects are the result of KORG’s long term cooperation with Waves Audio®, the world reference in studio mastering effects. The included Waves MAXX AUDIO™ suite delivers sound that is louder and clearer, easily adapting the sound to your musical taste or correcting a problematic live scenario.
TC Helicon® Voice Processor
KORG’s long term cooperation with the world leader in vocal harmonies, TC Helicon®, continues in the Pa4X. The TC Helicon Voice Processor ensures that your vocals have the highest possible sound quality: up to 4 realistic harmony voices are available, and all can be controlled using the keyboard or MIDI events. Available vocal effects include Double, µMod, Reverb, Delay, Filter, HardTune, Pitch Correction plus Compressor, EQ, Gate, etc. Dedicated knobs (3) and buttons (3) for controlling the most important Voice Processor functions have been added to the top panel and placed within easy reach. The Adaptive Mic Setting—another KORG exclusive— monitors the input signal and auto-adjusts parameters such as the Adaptive Gate, EQ, Compression and the De-Esser to make the vocals sound smooth and “studio produced.” Just plug your microphone into the balanced XLR connection (phantom power available) and let the Pa4X do the rest!
KORG’s XDS Dual Player & Recorder features a crossfade slider for providing non-stop entertainment; load one as the other plays, then crossfade between them—or create a playlist for automatic playback. Two different MP3 or MIDI files can be played simultaneously. MIDI files and even MP3 files can be transposed, sped up or slowed down. There is also a Marker Function to allow direct jumps to a given position in the song, or to create loops between song sections. The “MP3+G” (also known as MP3+Graphics) format and other popular lyric formats are supported. This feature allows MP3 files to play with lyrics and graphics that can be displayed on the built-in display or on an external monitor—or both. The Vocal Remover quickly eliminates the vocal track from MP3 songs—ideal for live karaoke! The 16-track recorder allows sophisticated levels of sequencing and editing, and also provides quick and easy song creation using the Backing Sequence and Style functions. The Pa4X can record your entire performance; you can play back a song, play the keyboard, sing along, and everything will be recorded and saved as an MP3 file. You can then play that MP3 file again to add a further keyboard track or voice using the well known “sound on sound” technique. Using the note data saved in a MIDI file, the Pa4X can display traditional musical notation with notes and/or chords, together with lyrics and chord abbreviations. This sophisticated Score Viewer can be seen on the internal TouchView™ screen, or displayed on an external video monitor. Chord names can also be seen in English or Italian.
Particularly helpful for live use, the SongBook is a fully programmable and easily searchable Music Database. Each entry contains all the settings required to play a particular song. The SongBook can save and access Styles, MIDI files, or MP3s and immediately recall settings such as the song title, genre, artist, tempo, volumes, sounds, muted tracks, FX settings, easy-edit parameters, 4 keyboard sets, 4 pads, TC Helicon® presets, master transpose, and much, much more. Everything needed to play your song back perfectly is in the SongBook. This incredibly useful performance feature is another KORG exclusive. A more refined Filter feature allows you to search for entries using a combination of different criteria, such as all songs containing “love” in the title AND classified as a “ballad”. The SongBook includes also a renewed Set List function, with a convenient panel-button association for fast recall, to make life easier during live gigs. With the SongBook Editor you can easily view, create, and edit your KORG Pa-Series SongBook entries and Set Lists using a Windows based computer. It can also be synchronized with iOS and Android tablets to become your handy external digital music sheet reader (third-party software required).
Connectivity, Data Storage, and Updates
In addition to the Main Left and Right outputs, the Pa4X includes two additional assignable outputs. This can be ideal for isolating a part for additional signal processing or feeding an external mixer. A headphone output is conveniently located on the front panel. The microphone input uses an XLR connector, and phantom power is available. For inputs, the Pa4X provides a pair of balanced 1/4″ inputs (Line 1) and a stereo 1/8″ jack (Line 2) for use with smartphones, mobile devices, etc. MIDI In, Out, and Thru connectors are provided, as well as a USB to computer (Device) port. The composite RCA video output delivers the score and lyric display (or simply mirrors the internal display) to an external monitor.
Pa4X 61: 61 keys (C2 – C7)
Pa4X 76: 76 keys (E1 – G7)
Semi–weighted keys with Velocity and Aftertouch
Upgradable Operating System
Multitasking, load while play feature
EDS-X (Enhanced Definition Synthesis-eXpanded)
Filters with Resonance – Three band EQ for each track
128 Voices, 128 Oscillators
Accompaniment/Song: 4 Insert Effects; 3 Master Effects (148 Types)
Keyboard Tracks: 1 Insert Effect; 2 Master Effects (148 Types)
Final Mastering Effects: Waves Audio Ltd. MAXX Suite (Includes MaxxEQ™, MaxxBass™, MaxxTreble™, MaxxStereo™, MaxxVolume™)
Voice Processor Technology by TC Helicon®
Four-part Harmonizer, Double, µMod, Reverb, Delay, Filter, HardTune, Pitch Correction;
plus Compressor, EQ, Gate (Adaptive Mic Setting on the Mic input)
Sounds / Drumkits
Factory: More than 1,900 Factory Sounds including a new multilayer Stereo Piano with damper/body resonance, GM/XG sound sets and more than 110 Drumkits * including Ambient Drums
User Area: 512 Sounds, 256 Drumkits
Digital Drawbars: 9 Footages, Percussion, Key On/Off, Leakage (Effect section includes rotary speaker)
Defined Nuance Control (DNC) Technology
Natural Ambience Drums Sound
Full Sounds/Drumkits editing
User PCM RAM Memory: 400 MB
Load KORG, Wav, AIFF and SoundFont™ formats
Save KORG, Wav and AIFF formats
Full Edit, Time Slice, Sampling feature
Factory: More than 550 Factory Styles, freely reconfigurable sets
User: 1,248 locations, including User, Favorite and Direct banks
Eight Accompaniment tracks, 4 Keyboard Sets, 4 Pads per Style; Style Settings (Sounds and Arranger parameters) on each Style
Guitar Mode 2, Parallel and Fixed NTT (Note Transposition Table)
Style Record with Step Record, Track and Event Edit
MIDI Song to Style Converter
Style controls: 3 Intros, 4 Variations, 4 Fills, Break, 3 Endings, Synchro Start, Synchro Stop, Tap Tempo/Reset, Bass Inversion, Auto Fill, Manual Bass, Memory, Accompaniment Mute, Drum Mapping, Snare & Kick Designation, Style to KBD Set Mode
Chord Sequence recorder in Style Play mode
Chord Sequences can be saved to Style and SongBook En-tries
Edit functions: delete, copy from Style/SongBook, import/export from/to SMF
Keyboard Set Library
Memorize keyboard Sounds settings
Factory: More than 460 Factory Keyboard Sets, freely recon-figurable
User: 1,056 locations, including User and Direct banks
“My Setting” special Keyboard Set
KAOSS FX Automatic MIDI FX generator
More than 65 Factory Presets Song Play
Patented XDS Crossfade Dual Sequencer Player with X-Fader Balance control
Supported formats: MID, KAR, MP3 + lyrics, MP3+G
2 Players with separate Select, Start/Stop, Home, Rewind and Fast Forward controls
Lyrics, Score, and Chord data can be displayed on screen, or on external video monitor
Markers with Add, Delete, Edit and Loop functions
MP3 Player / Recorder
Double MP3 Player and MP3 Recorder
Transpose (+6/-5 semitones)
Tempo change (±30%)
Records MP3 files including Styles, MIDI Songs, MP3 Songs, Keyboard Sounds, Pads, Microphone, Effects, and KAOSS Effects
Quick Record (Backing Sequence), Multitrack and Step Record functions –
Full-featured sequencer, 16 tracks, Up to 200,000 events, SMF (MID) native format
Fully programmable music database based on Styles, MIDI Songs (MID and KAR files), MP3 Songs with automatic selection of Style Play and Song Play modes
User definable Set Lists, with Entries selectable from the control panel
Filtering and sorting options
“i-Series” models: Styles
Pa-Series models: Styles, Performances, Programs/Sounds, Songs, SongBook Entries, Pads
Four Assignable Pads + Stop Buttons
Pad Record function
Master Volume; Fade In/Out; Keyboard-Acc/Song Balance Volume; Ensemble; Octave Transpose; Master Transpose; Quarter Tone and Arabic Scale memorized inside Keyboard Sets; Joystick (pitch + modulation); Ribbon; Mic Volume; Harmony/Double; Delay/Reverb; Mic Preset; Mic On/Off; Harmony On/Off; Double On/Off; 8 Assignable Sliders; Slider Mode; MP3 Volume; 3 Assignable Switches; Tempo +/-; Tempo Lock; Metronome On/Off; Dial; Up/+; Down/-; Search; Shift; Chord Scan (Lower, Upper); Split; Keyboard Tracks Sound Select and On/Off; Record
Damper pedal (support half-pedaling with optional DS-1H pedal)
EC5 multiswitch pedal
Mic/Line Inputs Mic: Combo XLR balanced with Gain control and Phantom Power
Line 1: Left/Right Jack (1/4″) Line Input, balanced
Line 2: Stereo Mini-jack (1/8″) Line Input, unbalanced
Audio Output: Left/Right, Out 1, Out 2; (1/4″ Jack) balanced
Headphone Output x 1 ( 1/4″ Jack)
Video Out (RCA connector)
IN, OUT, THRU standard MIDI connectors
USB to MIDI using the USB Device port
8 user definable MIDI Setups
USB Type A (HOST, for memory and controllers) x 2 (front/rear)
Type B (DEVICE, for personal computers and tablets) x 1 (rear)
2.0 Hi-Speed connections Storage
– Pa4X 76: Standard
– Pa4X 61: optional, user installable; HDIK-3 hard disk installation kit required
Micro SD card: (Card not included)
– Rear panel slot with plastic cover
USB Flash Drive: (Drive not included)
– 1 Front panel port
– 1 Rear panel port
7” Wide capacitive color TouchView™ TFT display Clock Internal System Clock
100-240 Volts, 50/60 Hz
0.5 Watt in standby / 16 Watt normal / 38 Watt with PaAS installed
Dimensions (W x D x H)
Pa4X-76: 1,192 x 364.4 x 125.56 mm / 46.93″ x 14.35″ x 4.94″
Pa4X-61: 980 x 364.4 x 125.56 mm / 38.58″ x 14.35″ x 4.94″
Pa4X-76: 16.3 kg/35.93 lbs
Pa4X-61: 13.9 kg/30.64 lbs
Accessories AC Power Cable, Music Stand Options
HDIK-3 Hard Disk Installation Kit (for 61 keys only)
VOX V860 volume pedal
*Appearance and specifications are subject to change without notice.
*All product, company, and standard names are trademarks or registered trademarks of their respective holders.