Oberheim Xpander With Rare XK Xpander Controller

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"This one is a highly sought after Made in USA model.. with the uber rare XK controller which features a very musical arpeggiator designed for the Xpander. The arpeggiator can clock internally or externally via midi! Also included is the original manual and Data Cassette. PLUS both the Xpander and the XK come with heavy duty hard road cases! Perfect for getting these prized classics to you safely! Both Xpander and XK controller work perfectly.. its important to note that most Xpanders by this point have issues with the knob encoders and panel buttons.. THIS Xpander does NOT have those issues. ALL encoder knobs and panel buttons, and all jacks work without issues. In fact they still feel as if they were new. As you can see from the pic showing tuning tests.. All tunable systems in the Xpander Pass tests.

The sound of the Xpander is so amazing, so lush and by far the most elegant classic analog poly synthesizer i have come across aside from the Matrix 12, which is two Xpanders in one synth. No other synth comes close, no soft synth can match anywhere close to the real deal."

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Korg Mono/Poly MP4

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"Original vintage Korg mono/poly mp4 in gorgeous playing condition, zero issues, truly excellent example of one of the best synths…ever. Enjoy!"

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Roland CR-8000 SN 349866

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Yamaha SY-1 SN 8433 w/ Original Dust Cover

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Roland JUNO-106 6 Voice Programmable Polyphonic Synthesizer

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Dreadbox NYMPHES Review // An analog poly with an interesting mono twist // Tutorial, tips & ideas

video upload by loopop

TIMELINE:
0:00 Intro
1:05 Overview
2:30 Menu nav
4:25 Diving in
4:45 Unison
6:05 Chords
7:55 Expression
10:00 Multi mods
11:05 LFO 1 & 2
12:05 LFO as env
12:55 PWM
13:20 LFO rates
14:50 Key sync
15:10 Oscillators
15:55 LPF
16:40 Envelopes
17:25 Reverb
19:00 Tips & ideas
19:20 MIDI CCs
19:40 LFO 2 to modulate LFO 1
20:00 Chord glide
20:20 Load x 2
20:55 Subharmonics
22:25 Pros & cons
25:45 Outro

Eurorack CV Modulation Recorders

video upload by John Schussler

"Headphones on, please. This vid leverages the stereo image as part of the demo.

Modulation recorders are handy for coordinating modulation moves with a melodic or rhythmic sequence. You could also use a full sequencer, but in many cases that's overkill. These modules do the trick without too much complexity. (Though it must be acknowledged that the Voltage Block does market itself as a sequencer of sorts.)

These four all offer at least 3 channels of cv recording. Some are limited by steps in the sequence, some by memory. Also note that the level of quantization (simplifying the smooth recorded curve into something more stairstepped) varies from module to module. Lastly, note that they output different voltage ranges, which in some cases can be customized.

All work well for their assigned purpose, no duds here.

Source audio: Dixie II+, using an Morgasmatron as the target of modulation. I added a pulse from a second Dixie II+ to give me some rhythm to move along with. Modulation with no rhythm to it sounds a bit uninteresting in this context.

00:00 Intro
00:20 Voltage Block
04:10 Planar2
07:14 Krait
09:58 Flame C-3"

A Conversation with Jean-Michel Jarre

video upload by Alan R. Pearlman Foundation

"On September 17th, Dina Pearlman, daughter of ARP Synthesizer inventor Alan R. Pearlman met with Jean Michel-Jarre to record opening remarks for the ARP 2600 Synthposium; followed by an interview. We've decided to release an edit of the video to commemorate the 45th anniversary of the original recording as well as over 50 years of the iconic ARP 2600, one of Jean-Michel's "pet" instruments and a go-to for his recordings even today.

For those interested in seeing the Synthposium its entirety, visit bit.ly/ARP2600-encore"

HOME BAKE INSTRUMENTS EURO BOY (proto)

video upload by HOME BAKE INSTRUMENTS

via HOME BAKE INSTRUMENTS

EURO BOYは自分でビルドし、ハックすることが出来るシンセサイザーモジュールです。

Arduino nanoをコアに、DACやキャラクターLCDと、４つのノブを搭載しています。ユーロラックに搭載するだけでなく、usbからの電源供給で、単体での動作も可能です。

EURO BOY is hackable synthesizer based on arduino nano. You can build it by yourself.


Hardware Progress

2nd Hardware Designed.
prototype 1 arrived.
Mistake found in 1st PCB.

Analog input pins not match with schematic
DAC V-ref pot added.(4.5v ref)

Gerber files updated.

May be more mistakes or problem in data.
input tolerance check not yet


Firmware Progress

minimum coded for hardware control.
LCD checked working.

SW checked working.
AD checked working.
DA checked working.
Digital Out checked working.

May be some mistakes or problem in data.

Euclid Sequencer coded.

Gechologic Gecho Loopsynth V2

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You can find demos in previous posts. "It has the rechargeable battery modification with huge 2000MAH LiPo battery that lasts for days of continuous use."

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