AKAI Professional

The Akai Professional MPC4000 Plus Music Production Center combines a 128-Track MIDI Sequencer and a 64-voice 24bit Stereo Digital Sampler, with 16 velocity and pressure sensitive rubber pads, providing rock solid sequencing and drum programming combined with extensive sampling facilities in one extremely powerful desktop unit.

Designed for professional audio production, the MPC4000 Plus offers all the advantages of dedicated hardware, features a large LCD plus the computer interface power of akSys PC/Mac control and networking software. And to make sure all this power runs smoothly, at the heart of the MPC4000 Plus is our new custom designed LSI sampling engine which, coupled with a high performance Intel™ Strong Arm CPU provides ultra fast audio processing.

More than just a sampling drum machine, for the first time, the MPC4000 Plus supports not only conventional Drum programs but also gives you the choice of selecting Keygroup programs allowing you to play 'conventional' multi-sampled sounds such as piano, bass, strings, synth, etc., from a keyboard just like our rack mount samplers. Furthermore, it is compatible with the largest variety of sound libraries: Akai S1000, S3000 and XL series, S5/S6000, Z4/Z8, MPC2000XL, MPC3000, Roland S700 series, and EMU 3 and 4 series.

Sample recording can be performed even while the sequencer is running, from digital or analog inputs, including a RIAA phono input for direct connection of a turntable, or from the internal CD drive, and the MPC4000 Plus can also resample its own stereo output.

The MPC4000 Plus shares all the sample-manipulation functionality of the Z series, including looping, time-stretching, pitch-shifting, slicing and dicing.

New filtering is provided by way of 6-pole digital dynamic filters. The new filter design not only supports multi-mode filter types, but also new variations such as the triple filter consisting of three independent 2-pole filters.

Filter modulation is part of the 64-point APM (assignable program modulation) matrix which has more than 30 modulation items freely assignable as either source or destination. Modulation items also include 3 independent envelope generators and 2 syncable LFOs. Furthermore one source can be assigned to multiple destinations and likewise multiple sources can be assigned to one destination just like on a vintage synth matrix patch board.

Four internal effects processors can be used simultaneously, including a wide range of effects algorithms, such as reverbs, delays, chorus, phasers, flangers, 3-band parametric EQ, compressor/limiter, distortion, pitch shifter, wah, and more.

Real-time control is provided by two note variation sliders and four Q-Link knobs. These can be separately assigned to allow flexible real-time performance control of a wide variety of selectable parameters including level, pan, filter cut-off and resonance, tuning, LFO speed and depth, all effect parameters and more.

Each assignable Q-Link knob can generate MIDI controller data so that all performance information can be recorded and played back from a within a sequence, and the Q-Link sequencer allows cyclic modulation programming.

Of course, as all MPCs, the MPC4000 Plus provides both pattern-based and linear sequencing, with the added capability to play simultaneously a pattern-based song and a linear sequence. Improved sequencing functions include resolution up to 960ppq, and a sequence data clipboard allows you to create a phrase library.

As on the legendary MPC60 and MPC3000, 2 MIDI ins and 4 MIDI outs also come as standard on the MPC4000 Plus enabling 64 external MIDI channels operation, but in addition, the MPC4000 Plus can control its onboard sampler over up to 128 Parts, allowing to assign a different program on each of the 128 track.

The large LCD also allows an unprecedented view of sequence data showing data as a piano roll or as a drum machine 'grid'. Continuous MIDI data can also be shown (and edited) graphically.

The MPC4000 Plus comes with 272MB of onboard memory as standard that can be expanded up to 512 MB of RAM using a standard DIMM. It is equipped with internal 80GB Hard Disk and CD-RW drives.

The MPC4000 Plus also includes a 50pin SCSI interface and a USB Host port for connection to external drives. The USB port can also be used to connect an ASCII keyboard for easier file naming.

A USB slave port allows direct connection to a PC or Apple Mac for use with the free akSys software.

As well as editing, this graphically rich remote control software allows you to transfer files between the MPC and your computer for efficient organization of sound library, etc., and for speedy integration with your favorite computer music software. Samples can be edited as standard Wav files and sequences as standard Midi files.

The included Pad editor allows you to drag&drop samples directly onto the Pads with 4 adjustable velocity layers.

The following hard drives have been tested and approved for use in the MPC4000 Plus:

Seagate Baracudea ST3802110A 80GB


  • Improved Akai MPC design
  • Established friendly and intuitive user interface of MPC series, now with large graphic LCD display
  • MPC’s legendary "feel" and "groove", with 10 times more resolution for non-quantized live sequencing
  • Great-feeling, velocity and pressure sensitive pads for expressive programming, with more pad banks
  • Expanded Pattern-based and linear 300,000 notes, 128-track sequencer with 128 internal Parts and 64 external MIDI channels
  • 64-voice full-featured 24bit sampler (32-voice at 96kHz) with up to 512MB RAM
  • Extensive connectivity
  • Two MIDI inputs and four MIDI outputs
  • Built-in USB and SCSI interface for external drives
  • USB Slave port for connection to a Windows or Mac OS computer with the free akSys sofware
  • Up to 10 analog outputs, and/or 10 digital outputs with optional IB-48P and IB-4ADT expansion boards
  • XLR and 1/4" stereo analog inputs and outputs with 24bit/96kHz AD/DA converter
  • Phono inputs with RIAA preamp for direct connection of a turntable
  • WordClock input for integration with other digital device
  • Flexible Master/Slave synchronization capabilities: MIDI clock, MTC, MMC and built-in SMPTE
  • Two assignable footswitch inputs
  • Compatibility
  • Compatible with Akai, Roland and EMU CD-ROM libraries (programs and samples)
  • WAV file support, and MIDI File Type 0 and 1 support
  • Extensive sound control
  • Extensive sample editing that includes cut and paste, timestretch, slice, resampling etc., with waveform display
  • Dynamic resonant multi-mode filters, 3 envelope generators and 2 LFOs for each of the 64 voices
  • Six Q-Link sliders and knobs for real-time control over a wide variety of dynamic changes
  • Internal 4-bus multi-FX processor
  • Self-contained
  • Internal 80GB hard drive to store custom sound libraries and sequences
  • Onboard CD-RW drive to load CD-ROM libraries, sample Audio CDs, and backup personal data


Sound Generator

  • Data format: 24bit and 16bit linear WAV
  • Sampling rate: 44.1kHz, 48kHz, 96kHz
  • Memory: 272MB standard, expandable to 512MB with a 256MB 168pin DIMM (PC133/PC100, CL2)
  • Preset sound memory: 5MB Flash
  • Recording time: 51mn / 34mn (16/24 bit) mono @ 44.1kHz (272MB)
  • 96m n / 64mn (16/24 bit) mono @ 44.1kHz (512MB)
  • Polyphony: 64-voice (32-voice @ 96kHz)
  • Filters: 3 dynamic resonant 2-pole multimode filters per voice
  • Envelope generators: 2 multi-stage envelopes and 1 ADSR envelopes
  • LFOs: 2 multi-wave LFO
  • 64-point modulation matrix
  • Number of simultaneous active programs: up to 128 Parts per Multi, with automated Part mixer


  • 4 simultaneous internal effects (2 @ 96kHz)
  • 51 effects types including reverbs, delays, chorus, phasers, flangers, 3-band parametric EQ, compressor/limiter, distortion, pitch shifter, wah, and more


  • Capacity: 300,000 notes
  • Resolution: 960ppq
  • 128 Sequences
  • 128 Tracks per sequence
  • 64 MIDI output channels (16 channels x 4 output ports)
  • Song mode: 128 songs, 250 steps per song
  • MIDI Sync: Master/Slave, MIDI Clock, MTC, MMC
  • SMPTE Sync: Master/Slave
  • Step edit, Piano Roll edit, Drum Grid edit


  • 16 velocity and pressure sensitive pads
  • 6 pad banks
  • 16 Levels: Velocity, Tuning
  • Automated Pad Mixer (Level, Pan and FX send)
  • Track Mute and Next Sequence features for live performance


  • 2 sliders and 4 rotary knobs
  • Assignable to internal sampler controls: pitch, filter cutoff, resonance, LFO, attack, decay, and more
  • Assignable to internal effects parameters
  • Assignable to external Midi Controllers
  • Q-Link Sequence feature


  • Record Input (L and R): XLR - 1/4"; jack combo x 2, balanced
  • Phono Input; RCA x 2 with RIAA EQ
  • Stereo Output (L and R): XLR x 2 and 1/4” jack x 2, balanced
  • Individual Outputs: 1/4" jack x 8, balanced (option)
  • Headphone Output: 1/4" stereo jack x 1
  • Multi-channel ADAT Digital I/O: Toslink optical x 2 (option)
  • MIDI: 2 x MIDI In and 4 x MIDI Out
  • SMPTE In/Out: 1/4" jack x 2, balanced
  • SCSI: 50pin high density connector
  • USB: USB: Host x 1, Slave x 1 (v1.1 / Mass Storage Class support)
  • Footswitches: 1/4" jack x 2


  • Display: 320 x 240 pixels grey-scale graphical tilting LCD
  • Internal Hard Drive: 80GB
  • CD-RW drive
  • Standard accessories: 1x CD-ROM sound library, Power cable
  • Power: 100-240V AC, 50/60Hz
  • Consumption: 70W max (with all options)
  • Dimensions (W x H x D):
  • 20.71" x 6.69" x 17.83"
  • (526mm x 170mm x 453mm) [with LCD tilted down]
  • Weight: 23 lbs (10.5kg), excluding drives and options


  • IB-48P: 8 individual analog outputs
  • IB-4ADT: multi-channel ADAT digital I/O
  • B-4D SPDIF I/O with WordClock
  • - See more at: http://www.akaipro.com/product/mpc4000#specs

Frequently Asked Questions:

  • What is the difference between pattern-based sequencing and linear sequencing?

    The MPC4000 can do both. With linear sequencing, the whole song is one long sequence which can be recorded continuously in real-time, much like an audio recorder, or edited by copying/pasting bars (such as verse, chorus, etc). This is good when recording tracks while playing live over the whole song. With pattern-based sequencing, a song is made of multiple short sequences (patterns) that can be re-arranged very quickly in Song mode or even in real-time using the Next Sequence feature. However, unlike limited 'groove-boxes' where patterns are only one or two bars, on the MPC4000, pattern/sequences can be of any length With the MPC4000, you can work on each pattern in a loop, switch patterns, and in Song mode, simply specify the order the pattern playback and number of repeats to create an arrangement. At any time, you can change the arrangement without tedious copying/pasting. In addition, if you decide to modify a pattern (say, the chorus sequence) after having created the song arrangement, it will automatic

  • What are the benefits of having two MIDI Ins and four MIDI Outs?

    The two MIDI Inputs allow connecting a MIDI controller (keyboard, drum pads) to one input while the other input is used to receive MIDI Sync from another unit such as a digital recorder. Otherwise, you would need an outboard MIDI Merger. The four Midi Outputs allow the MPC4000 to control 64 external MIDI Channels (16x4), in conjunction with the 128 internal Programs. This is very useful if you have more than one outboard multi-timbral sound generator (for instance, your keyboard and a sound module). This also allows using a dedicated MIDI output MIDI Sync.

  • What type of memory will work in my MPC4000?

    You should use only 168-pin, PC100 or PC133, CL2 DIMM.

  • Do I need another sound module to add keyboard instruments parts to my beats?

    No. The MPC4000 includes a full featured multi-timbral sampler. Simply connect a MIDI keyboard to one of the MIDI inputs of the MPC4000, load a piano, organ or synth program for your library, assign it to the current track and play it from the keyboard.

  • Do I have to load samples in the memory before I can hear them on my MPC4000?

    No. Since OS V1.60, you can audition samples directly from the disk (hard disk or CD-ROM) before loading them.

  • Can I record vocals with my MPC4000, in sync with my sequences?

    Yes. Since OS V1.60, it is possible to trigger audio recording with a Midi Note on a specific channel while the sequence is playing/recording. Using the same note to trigger the playback of your recorded vocal sample will play it in sync with the sequence, exactly where it was recorded. I have produced a complete beat with my MPC4000. How can I burn it to a CD or share it via Internet? When your beat is ready, go to the RECORD mode and select MAIN OUT as the source for stereo recording. Set the sampling time to the length of your beat an When your beat is ready, go to the RECORD mode and select MAIN OUT as the source for stereo recording. Set the sampling time to the length of your beat and the threshold to the minimum. Arm for recording and play your sequenced beat from the start. This will create a new stereo sample of your beat, including the effects. When finished recording, transfer this stereo sample as WAV file in your computer (via USB or any removable media), and use your computer software to e

  • What are the Q-Link controls?

    The MPC4000 has four Q-Link™ knobs, and two Q-Link™ sliders, that can be separately assigned to allow flexible real-time control of a wide variety of selectable parameters including amplitude, filter cut-off and resonance, sample start offset, effect send, sample tune and more. Control of an entire program or an individual sound assigned to a single keygroup is possible. Each assignable Q-Link™ control is also capable of generating MIDI controller data to external sound generators, and so that all performance information can be recorded and played back from the MPC4000's sequencer.

  • What is Quick FX?

    Quick FX allows sounds to be sampled and re-sampled through the 4-bus internal multi-effects processor. A variety of presets are available that describe the final result allowing (as the name implies) very quick operation. Of course, if you want to, you have access to the effect's parameters to customize the presets. Presets such as Dirty, Swell, Squash, Stretch, Distant, Fat, etc., provide the desired results without the complexity.

  • Can I edit the sounds of my MPC4000 on a computer?

    Yes. Programs can be edited graphically in real-time via USB on a computer using the supplied akSys software for Windows and Mac OS. Samples are saved as standard WAV files and can be edited and processed in any sample editing software.

  • What is ak.Sys? What does it do?

    ak.Sys is a free Control and Networking software available for Windows, Mac OS 9 and OS X. The intuitive nature of this computer based interface means the MPC4000's sampler is easy to manage and since all the DSP processing takes place in the sampler, it relieves the strain on your computer allowing it to run efficiently while simultaneously using other audio applications. In fact, such is the level of integration, you'd be forgiven for thinking that you are using a software sampler...except you're not! And when you're ready to take your show on the road, dedicated hardware travels much better than a computer! Up to 32 samplers can be connected to the same computer and share the same sound library via a simple USB connection. ak.Sys V2 supports any combination of Z4/Z8, MPC4000 and S5000/S6000 samplers. The ak.Sys Browser allows you to manage sound libraries. Files can be dragged and dropped between disks and memory to load sounds into the sampler (and vice versa to save sounds to disk). You can also drag and



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