Note: Auction links are affiliate links for which the site may be compensated.
video upload by Edwin Kiddo
"Playtime with the Rozzbox One Synthesizer"
via this listing
"Extremely Rare Rozzbox One Synthesizer SN #9!!! W/ Analog Filter! Vintage Synth
I bought this one back in 2017. It's seen light use. I did a demo video for it."
Showing posts with label LL Electronics. Show all posts
Showing posts with label LL Electronics. Show all posts
Saturday, January 18, 2025
Saturday, April 27, 2024
L.L. Electronics Rozzbox One ver. 2 SN 00039
Note: Auction links are affiliate links for which the site may be compensated.
via this listing
"The Rozzbox One V2 is a poly synth created by Kilian Leonhardt (LL Electronics).
Released in 2008. Roughly 50-60 were made.
Ahead of its time, between digital and analog, this synth is perfect for making drones and pads.
No FX, only Rozzbox.
Not your typical poly synth :
- 5x voices polyphonic synthesizer
- 4x digital oscillators with 20 waveforms
- Digital and analog filters on each voice + one tube filter.
- FM mode with 7 algorithms
- Ring modulator
- Audio input
- 4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
- Complex 4-point modulation matrix with 16 sources and 16 destinations
- Complex trigger matrix with unlimited connection count, for interconnection of LFOs, sequencers, envelope triggers, MIDI clock,
- The switchable “Hacker” adds artificial analog aliasing (tunable)
- Bit reduction / Sample rate reduction
- Full MIDI control of every parameter
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)"
via this listing

Released in 2008. Roughly 50-60 were made.
Ahead of its time, between digital and analog, this synth is perfect for making drones and pads.
No FX, only Rozzbox.
Not your typical poly synth :
- 5x voices polyphonic synthesizer
- 4x digital oscillators with 20 waveforms
- Digital and analog filters on each voice + one tube filter.
- FM mode with 7 algorithms
- Ring modulator
- Audio input
- 4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
- Complex 4-point modulation matrix with 16 sources and 16 destinations
- Complex trigger matrix with unlimited connection count, for interconnection of LFOs, sequencers, envelope triggers, MIDI clock,
- The switchable “Hacker” adds artificial analog aliasing (tunable)
- Bit reduction / Sample rate reduction
- Full MIDI control of every parameter
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)"
Wednesday, July 20, 2022
[Synth Exploration] LL Electronics Rozzbox One V2 (no talk)
video upload by MrMakingsound
"The Rozzbox One V2 is a poly synth created by Kilian Leonhardt (LL Electronics).
Released in 2008, only a few were made, and one year later, Kilian stopped the production to get back to his studies.
Ahead of its time, between digital and analog, this synth is perfect for making drones and pads.
No FX, only Rozzbox.
Not your typical poly synth :
- 5x voices polyphonic synthesizer
- 4x digital oscillators with 20 waveforms
- Digital and analog filters on each voice + one tube filter.
- FM mode with 7 algorithms
- Ring modulator
- Audio input
- 4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
- Complex 4-point modulation matrix with 16 sources and 16 destinations
- Complex trigger matrix with unlimited connection count, for interconnection of LFOs, sequencers, envelope triggers, MIDI clock,
- The switchable “Hacker” adds artificial analog aliasing (tunable)
- Bit reduction / Sample rate reduction
- Full MIDI control of every parameter
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)"
Tuesday, December 22, 2020
L. L. Electronics Rozzbox One V2
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"The RozzBox V2 Poly Synth with tube filter is a 5-voice polyphonic synthesizer with digital oscillators, digital and analog filters on each voice, and one additional all tube filter.
In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.
Features:
4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
2 independent filters per voice
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)
2 LFOs with standard waveforms and wave tracking, sync with MIDI
2 ADSR Envelopes with switchable lin/exp characteristics and trigger modes
4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
via this auction

In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.
Features:
4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
2 independent filters per voice
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)
2 LFOs with standard waveforms and wave tracking, sync with MIDI
2 ADSR Envelopes with switchable lin/exp characteristics and trigger modes
4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
Tuesday, January 28, 2020
L.L. Electronics Rozzbox One V2 Synthesizer
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"Unique features include 5 digital voices and vacuum tube filters."
via this auction
"Unique features include 5 digital voices and vacuum tube filters."
Monday, April 08, 2019
LL Electronics Rozzbox One V2 SN 00058
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"Rare and out of production! Like New Condition!
The RozzBox V2 Poly Synth with tube filter is a 5-voice polyphonic synthesizer with digital oscillators, digital and analog filters on each voice, and one additional all tube filter.
In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.
Features:
4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
2 independent filters per voice
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)
2 LFOs with standard waveforms and wave tracking, sync with MIDI
2 ADSR Envelopes with switchable lin/exp characteristics and trigger modes
4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
Envelope follower with separate input
Complex 4-point modulation matrix with 16 sources and 16 destinations
Complex trigger matrix with unlimited connection count, for interconnection of LFOs, sequencers, envelope triggers, MIDI clock,
The switchable “Hacker” adds artificial analog aliasing (tunable)
Bit reduction / Sample rate reduction
‘Chaos’ mode of the digital filter
Digital hard clipping
Full MIDI control of every parameter"
via this auction
"Rare and out of production! Like New Condition!

In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.

4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
2 independent filters per voice
Includes 3 self-resonant Filter-Types:
- Digital high pass/low pass filter with resonance and 24dB/octave (4 filter poles)
- Analog low pass ladder filter with resonance and 24dB/octave (4 filter poles)
- Completely tube-driven analog low pass filter with resonance and 12B/octave (2 filter poles)
2 LFOs with standard waveforms and wave tracking, sync with MIDI
2 ADSR Envelopes with switchable lin/exp characteristics and trigger modes
4 completely independent sequencer lines per voice, each with its own running mode and synchronization settings
Envelope follower with separate input
Complex 4-point modulation matrix with 16 sources and 16 destinations
Complex trigger matrix with unlimited connection count, for interconnection of LFOs, sequencers, envelope triggers, MIDI clock,
The switchable “Hacker” adds artificial analog aliasing (tunable)
Bit reduction / Sample rate reduction
‘Chaos’ mode of the digital filter
Digital hard clipping
Full MIDI control of every parameter"
Saturday, January 26, 2019
Ultra Rare LL Electronics Rozzbox One V2 5-Voice Polyphonic Synthesizer
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"The ultra rare RozzBox V2 Poly Synth with tube filter is a 5-voice polyphonic synthesizer with digital oscillators, digital and analog filters on each voice, and one additional all tube filter.
In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.
Features:
4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
via this auction
"The ultra rare RozzBox V2 Poly Synth with tube filter is a 5-voice polyphonic synthesizer with digital oscillators, digital and analog filters on each voice, and one additional all tube filter.
In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.
Features:
4 digital oscillators with standard and 16 additional waveforms – hard-sync possible
Configurable FM engine with 7 algorithms
Noise, external audio input, ring modulator
Sunday, November 19, 2017
LL Electronics Rozzbox One V2
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"LL Electronics Rozzbox One V2. The unit is in perfect condition both operationally and cosmetically. These are rare, discontinued and hard to find in the condition. It pains me to part with it, but sometimes life has other plans."
via this auction
"LL Electronics Rozzbox One V2. The unit is in perfect condition both operationally and cosmetically. These are rare, discontinued and hard to find in the condition. It pains me to part with it, but sometimes life has other plans."
Wednesday, August 30, 2017
LL Electronics Rozzbox One V2 Synth
Friday, August 18, 2017
LL Electronics Rozzbox One V2 Synth
Friday, May 05, 2017
LL Electronics Rozzbox One V2 Synth
Friday, March 17, 2017
L.L. Electronics Rozzbox One V2 Demo
Published on Mar 17, 2017 Perfect Circuit Audio
"The L.L. Electronics Rozzbox One V2 is a rare and quirky synth with 5 digital voices and vacuum tube filters. Demonstrating some patches with the Rozzbox as well as using its input that heavily distorts the Korg Volca Beats. Made to exploit its digital design, the Rozzbox is capable of a variety of unique effects, from intense oscillator aliasing to several forms of nonlinear digital distortion--perfect for gnarly glitch sounds and fizzy discontinuous soundscapes."
MATRIXSYNTH members get a %10 discount at Perfect Circuit Audio!
Monday, March 06, 2017
Rozzbox One Synthesizer SN 00009
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"SUPER RARE L.L. Electronics Rozzbox One monophonic synthesizer. This particular unit is SN#00009!!! Literally the 9th Rozzbox ever made! This one also has the Analog Filter option factory installed making it even more rare! This synthesizer works perfectly... The only flaw is that the "data" rotary encoder has a small dead spot that has always been there since I bought this unit. It really only effects scrolling quickly through patches if you're not using the + and - buttons, but it's only a small dead spot anyway... so it really is barely noticeable.
This thing sounds unbelievable."
via this auction
"SUPER RARE L.L. Electronics Rozzbox One monophonic synthesizer. This particular unit is SN#00009!!! Literally the 9th Rozzbox ever made! This one also has the Analog Filter option factory installed making it even more rare! This synthesizer works perfectly... The only flaw is that the "data" rotary encoder has a small dead spot that has always been there since I bought this unit. It really only effects scrolling quickly through patches if you're not using the + and - buttons, but it's only a small dead spot anyway... so it really is barely noticeable.
This thing sounds unbelievable."
Saturday, February 11, 2017
Rozzbox One V2 SUPER RARE 5 Voice Polyphonic Synthesizer SN 00010
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"EXTREMELY RARE L. L. Electronics Rozzbox One V2 5 Voice Polyphonic Synthesizer. I haven't seen one of these pop up for sale in YEARS with the exception of the unit that just sold on eBay from Spain. This is your chance to own one of the rarest synths on the market. This is the FIVE VOICE version with the ANALOG TUBE FILTER! I tried to get a good pic of the tubes glowing (because they look awesome) but it's tough to see in photos. This synth is 100% fully functional."
via this auction
"EXTREMELY RARE L. L. Electronics Rozzbox One V2 5 Voice Polyphonic Synthesizer. I haven't seen one of these pop up for sale in YEARS with the exception of the unit that just sold on eBay from Spain. This is your chance to own one of the rarest synths on the market. This is the FIVE VOICE version with the ANALOG TUBE FILTER! I tried to get a good pic of the tubes glowing (because they look awesome) but it's tough to see in photos. This synth is 100% fully functional."
Wednesday, April 27, 2016
L.L. Electronics Rozzbox One Synthesizer
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"LL Electronics Rozzbox One synthesizer module with the analog filter option. Includes manual & power supply. Power Supply is a 220V with euro style plug, so you will need a power converter... In very good condition, but has a small quirk/glitch upon start up. When you first plug this in and power it up it usually requires a reboot and reset of the MIDI channel. (MIDI seems to reset to 13 upon power down) After that though, it works fine. Its been like this since I acquired it from the previous owner several years ago. Due to this issue and Ebays strict listing guidelines I am forced to list it with the "for parts/not working" tag but it does work fine after resetting the MIDI channel"
via this auction
"LL Electronics Rozzbox One synthesizer module with the analog filter option. Includes manual & power supply. Power Supply is a 220V with euro style plug, so you will need a power converter... In very good condition, but has a small quirk/glitch upon start up. When you first plug this in and power it up it usually requires a reboot and reset of the MIDI channel. (MIDI seems to reset to 13 upon power down) After that though, it works fine. Its been like this since I acquired it from the previous owner several years ago. Due to this issue and Ebays strict listing guidelines I am forced to list it with the "for parts/not working" tag but it does work fine after resetting the MIDI channel"
Friday, October 30, 2015
Tangster
Published on Oct 30, 2015 clocktrick
Yu don't see the LL Electronics Rozzbox, or the Manikin Schrittmacher for that matter, often!
"Some sequencer recording in my room.
Synthesizer: Waldorf Q - Rozzbox V2
Drums: Elektron machinedrum
Effects: Eventide Time Factor
Sequencer: Manikin Schrittmacher
Tape Recorder: Revox A77
Digital Recorder: Samplitude Pro X"
Friday, February 20, 2015
Rozzbox One Sequenced by Doepfer Dark Time
Published on Feb 20, 2015 perfectcircuitaudio
"This video shows off the sonic capabilities of the L.L. Electronics Rozzbox One while being sequenced by a Doepfer Dark Time."
http://www.perfectcircuitaudio.com/rozzbox.html
Wednesday, January 21, 2015
L.L Electronics Rozzbox One Demo
Note: Auction links are affiliate links for which the site may be compensated.
Published on Jan 14, 2015 perfectcircuitaudio
Demo starts at :45.
"This video demonstrates the sound and features of the L.L. Electronics Rozzbox One Digital Synthesizer."
This one is currently for sale here and on eBay here.
Published on Jan 14, 2015 perfectcircuitaudio
Demo starts at :45.
"This video demonstrates the sound and features of the L.L. Electronics Rozzbox One Digital Synthesizer."
This one is currently for sale here and on eBay here.
Friday, October 31, 2014
LL ELECTRONICS ROZZBOX POLYPHONIC SYNTHESIZER
Note: Auction links are affiliate links for which the site may be compensated.
For sale at Perfect Circuit Audio
For sale at Perfect Circuit Audio
Thursday, July 03, 2014
L.L. Electronics ROZZBOX V1 with Analog Filter Hybrid synthesizer
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"Awesume synth with analog resonant filter, digital filter than can be used in serial with the analog filter, bit and sample reduction, Chaos filter mode, 4 Oscillators! Patch memory (100), Patch memory upgrade stick (another 100), everything inside is midi cc controllable, the works!!
Can sound nice and clean or classy, modern, dirty or chaotic all the way to broken and everything in between."
via this auction
"Awesume synth with analog resonant filter, digital filter than can be used in serial with the analog filter, bit and sample reduction, Chaos filter mode, 4 Oscillators! Patch memory (100), Patch memory upgrade stick (another 100), everything inside is midi cc controllable, the works!!
Can sound nice and clean or classy, modern, dirty or chaotic all the way to broken and everything in between."
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH