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Sample Synth Plugin by LinPlug
No Longer Available
CrX4 by LinPlug is a Virtual Instrument Audio Plugin for macOS and Windows. It functions as a VST Plugin and an Audio Units Plugin.
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64 KVR members have added CrX4 to 15 My KVR groups 84 times.
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Overall: 1568   1221   1519

30-Day: 1573; 7-Day: 4429; Yesterday: 9130

CrX4 mixes up your samples in real-time like no other instrument. If you start with a kick sample you may end up with getting a fascinating pad from it, and you should not be astonished to get some punchy drums just from your vocal samples. It's CrX4, samples are only food for its versatile and unique engines, featuring 3 different specialized sample processing generators, an oscillator, a sophisticated noise generator and all the filters and modulations you expect from a fully fledged synthesizer.


  • Versatile architecture with 4 generators and 2 filters.
  • Time-Sampler with independent real-time time-stretching and pitch-shifting (which can be modulated).
  • Wavetable Generator that offers wavetable operations on any sample (can be modulated).
  • Loop Sampler Generator with loop-points and sample-start which can be modulated.
  • Analogue-modeled Oscillator Generator.
  • Versatile Noise Oscillator with many filter options.
  • Free Filter with unique, continuously adjustable filter-type that can be modulated (LP->BP->HP->BR->LP).
  • Powerful, editable arpeggiator with up to 32 steps.
  • Sampler Generators support audio formats WAV and AIFF up to 24-bit/96 kHz.
  • 2 analog-style multimode stereo filters.
  • 7 ADSFR or AHDSR-type envelopes for various purposes.
  • 4 LFOs (up to 275 Hz) with various options.
  • Modulation Matrix with 10 routings.
  • 23 modulation sources and 68 destinations.
  • Recognizes all common MIDI Controllers.
  • "MIDI Learn" function for easy controller assignment.
  • 6 simultaneously available multi effect units.
  • Mono/Polyphonic adjustable Portamento/Glide.
  • 32-voice polyphony (CPU dependent).

Latest User Reviews

Average user rating of 4.50 from 9 reviews

Reviewed By Boy Wonder
July 4th, 2022

Why am I reviewing this dinosaur since it's already been discontinued? It is an oldie but is definitely a goodie. I'm an ambient producer and am always on the lookout for creamy delicious textured pads as well as powerful arpeggiators, and CrX4 delivers on both counts. Because it's a sampling/synth hybrid with those features, it reminds me of ANA2, albeit a simpler version. Like the older HG Fortune synths, CrX4 is a mainstay in my arsenal and is worth seeking out.

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Reviewed By tommyzai
November 16th, 2015

After an intense few days of noodling, I came up with the following brief summary. I hope you find it useful — Tommy Zai

CrX4 by LinPlug is a feature-packed sample manipulator VSTi that delivers ear-pleasing sounds, ranging from smooth and dreamy to rough and chaotic. The purchase, download, and installation process is easy. Authorization is done by way of a serial number. No need for a doggle of any kind. The interface is neat and clean, with an attractive color scheme of grays and greens. Almost everything is accessible on the main screen, which makes things convenient, but it is packed and might initially seem a little overwhelming to some users at first. Once I became familiar with the Generators, which are the heart of this beast, I felt at ease. Anyone with subtractive synthesis experience should quickly identify and understand most of the controls. The sample integration features will take a little more time to master, and the PDF manual can fill in the blanks. To shorten the learning curve, I found several online tutorials, reviews, and overviews. .

Four generators encompass the synth design and performance, and each can be assigned to function as an Oscillator Generator, Noise Generator, Sample Loop Generator (handles WAV and AIF files up to 24-bit/96k), or Wavetable Generator. Each generator has an array of assignable features, including a variety of filters with envelopes, LFOs, a modulation matrix, multi-effects, etc. Each generator also has many other features and options, like volume, filter routing, cross modulation, and much more. The two filters are responsive and include all the standard parameters (cutoff, resonance, etc.) and unique offerings like saturation. The synth has a glide, chord memory, programmable arp/seq, and many other useful performance tools, i.e., built in multi-FX (bit crusher, chorus, delay, EQ, filter, flanger, reverb, etc.). There is also a deep Mod Matrix with many slots, sources, and destinations.

CrX4 sounds great. There is no denying that, but what makes a desirable patch is subjective. Speaking of patches, it has a great browser section whereby a category or patch name at the bottom opens the full-screen browser. There are some useful categories and over 1000 sounds, many of which are creative and esoteric. The overall timbre is more digital than analog. This synth could certainly be used by anyone for just about anything; yet, in my opinion it really shines as a unique ambient, atmospheric, texturizing backdrop. Simply put, this VSTi is a sound designers dream! I enjoy loading samples from my own library, and then mutating them into something beautifully freakish. The multitude of on-board options make this a perfect synth for creating otherworldly timbres. Could someone use this as their "bread-n-butter" synth? Sure, but I see this as much more specialized and special. For a monster workhorse, I would recommend Spectral, by the same developer. In my opinion, CrX4 is the ultimate auxiliary or companion synth that magically fills in the gaps.


• Ships with over a gig of sample material.

• Fun to tweak with lots of control.

• Ability to load own samples (WAV+AIF) — SWEET.

• Excellent presets and management.

• Time stretching.

• Super sound quality.

• Nicely priced.

• Funky, innovative developer team.

BEST SUITED FOR: Anyone into authentic drones, pads, effects, and evolving sounds — this special hybrid synth-sampler will get plenty of playing time.

LEAST SUITED FOR: Anyone looking for a "go to" synth for all the basic mainstream pop sounds or an analog emulation.

OTHER THOUGHTS: The initial download takes some time as it's a large file. Busy interface, but perhaps it has to be — lots of great stuff on one page. Not extremely versatile, but what it does — it does amazingly well.

CrX4 is a must-have for any eMusician or producer, who is passionate about sound designing and track sculpting. CrX4 deliciously digital with just enough analog warmth to keep things from getting to cold. Tommy Zai gives CrX4 two dreamy thumbs up. Thank you, LinPlug, for developing this inspiring virtual instrument.

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Comments & Discussion for LinPlug CrX4

Discussion: Active
9 June 2014 at 9:38am

hi i install CrX4 but with my MIDI keyboard i have no sound on plugin is a red MIDI buttun when i drop it i hear a sound what can i do?

thanx jörg.

9 June 2014 at 4:30pm


Why don't you ask here in their official forum?


11 September 2020 at 12:47am

i cant believe no one has made and upload any patches for this great synth :(.

19 April 2023 at 4:05pm

it is free now?

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