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Mopho x4 Synthesizer Keyboard Introduction

It’s a polyphonic Mopho keyboard! Mopho x4 is the newest addition to DSI’s revered line of analog subtractive synthesizers. Building upon the same award winning voice architecture of the Mopho and Mopho Keyboard, the Mopho x4 boasts huge sound and 4 voice polyphony in an ideally sized, portable, and elegantly designed package. Use it to create huge unison basses, creamy leads, maniacal sequences, and ethereal pads. 4 times the voice 4 your pleasure Each of Mopho x4’s four voices is composed of two analog oscillators, two sub octave generators, selectable 2- or 4-pole famed Curtis low-pass filter, three 5-stage envelope generators, four LFOs, a re-latchable arpeggiator, and a 16 x 4 step sequencer. Its voice also comes packed with 20 modulation sources and almost 50 destinations! FM the filter to create metallic bell-like sounds and use the feedback path to add subtle or destructive harmonic content to your sound. Mopho x4’s 100% analog signal path is powerful, monstrous, and sonically dynamic! Work less, play more Mopho x4 is intuitive and inviting. Every parameter is fully programmable and editable from the front panel. The controls are logically laid out, lending themselves to quick access so you can tweak knobs without missing a beat. The x4’s full sized 44-note semi-weighted keyboard has aftertouch and velocity sensitivity. The sturdy full sized pitch and mod wheels are freely assignable and sport smooth reliable action. It grows with you Expand Mopho x4’s polyphony

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21 Comments  comments 

21 Responses

  1. electrolegs

    should of ditch the “x4” on the right hand side.. very? ugly

  2. kryzop aka dweebotz

    Bill thanks for your answer but I cant sit there and read that DSI support is above all. Soundtower are amongst the wost technology partners i have? ever dealt. DSI Tetra hardward is top notch and i am sure all CV and step SEq freaks out there will agree.
    BUt for productivity and DAW integration the Editor is a nightmare. Best way is to work with a MAXMSP patch but i cant say this is good integration.
    TETRA sounds great but I never use it simpy because I cant recall in live.

  3. DaveSmithInstruments

    It “loosens” the digital tuning and? it is still being tuned digitally, Slop does not use LFOs.

  4. explodingPSYCH

    How does “slop” work. Is it an LFO on each “voice” or does it just “loosen” the digital tuning. If it’s all the way up is it still being tuned digitally? or is it basically a VCO at that point? I can’t wait to get my x4!

  5. DaveSmithInstruments

    Yes, you can use this as a polyphonic MIDI controller. It will send all notes at? once if you can press them, consult your VSTi to see if there’s a limit on that end.

  6. explodingPSYCH

    Can you use this? as a polyphonic MIDI controller for VSTi’s? Is there a limit to the MIDI polyphony?

  7. Jamooshoe

    I have a Tempest – can someone tell me how? the get the sounds from 2:50 ?? Its ever so cool. Thanks

  8. davideighty1

    I was on the fence about a prophet for a while. I think? the Mopho x4 and tetra make a more powerful and flexible option than the prophet. I think the main difference is that the mopho has 2 sub oscillators , and maybe the latchable arp, not sure maybe something else. Anyways it’s cool being able to use the 2 in unison , or seperate them and have 2 4 voices. Plus the tetra’s combo modes and multi timbral function adds a lot more versatility.

  9. Slownoisedubs

    I love all my Dave Smith gear, this looks and sounds sensational!?

  10. verve92

    I heard it as well. I love DSI stuff due to its modulation options. Unparalleled at this level.
    Its almost like having a modular system with out the cords, bulk and cost.
    I have an MEK and just as often us it to modulate the crap out of any incoming signal in addition to any aspect of the sound architecture. I wish other synth manufacturers would take modulation as? seriously as DSI!!

  11. DaveSmithInstruments

    The x4 does not have Multi or Combo modes which are exclusive to the Tetra, and it does not have stack or split. You can make a “mono” or Unison patch with one voice,? or all 4 voices stacked. All voices will have the same program. If you require each voice to have a different program then the Tetra is a better option for you.

  12. darshonaut

    I want this for x-mas this year? 🙂

  13. 1StOfDecember

    Guys, I have a question. I’m trying to decide wether to buy? Mopho x4 or Prophet-8. So I wonder – is Prophet capable of everything Mopho x4 can do? Or does Mopho x4 have unique features? Can I make Mopho like bass sounds on the Prophet for example? Thanks.

  14. HybridlyRude

    Love it! Petit and really powerful? combo with the tetra…

  15. mattsynth

    Things I would like to see in a new analog synth: 1. Ring modulator. 2. CV & Gate output & inputs. 3. Band pass & High pass? filters. 4. Built in chorus effects like Rolands old units. Please.

  16. verve92

    Any other videos I? would like to hear some pads and more conventional synth sounds.

  17. icelandicnuggets

    Did I hear some ring modulation? in there starting at 2:50?

  18. Bill Jackson

    yes would be great.? keep your fingers crossed as DSI will have new synths in the future.

  19. DaveSmithInstruments

    There? is indeed a Unison parameter with 1-voice or all-voice and detune modes, as with all our poly synths. You can download the manual from our website for more detailed information.

  20. Zemael

    Man… Nice product! Enormous Chubby Sound! But I really like the yellow looking and the 32 keys format. Any? way to do a firmware for a re-latchable arpeggiator on the old one? Thank you!


    It? does have all the normal mono and unison modes you’d expect to see, but it’s just not multitimbral like P’08, nor like Tetra’s multitimbrality and awesome combo mode features. Still pretty cool though, and definitely able to “chorus” a mono patch.