Sequential Circuits Drumtraks - MIDI Drum Machine (1984)

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Pics of the inside below.

"The Sequential Circuits Drumtraks was the first drum machine that supported MIDI. (The Drumtraks can also send DIN sync and clock.) And while the drum pads were not velocity-sensitive, you can control it via a MIDI keyboard and trigger it with different velocities. While the kick sound is a bit thin, the 13 8-bit sounds can be pitch-shifted dramatically, adding some flexibility.

VOICES
Main core 8 bits NEC D780C-1 CPU part of Z80 ZILOG family manages 6 channels:

Channel 1: Bass Drum
Channel 2: Snare / Rim
Channel 3: Tom 1 / Tom 2
Channel 4: Crash cymbal / ride Cymbal
Channel 5: Open / closed HH
Channel 6: Claps / tambourine / cabasa /cowbell

WAVETABLE
Features 13 PCM waveforms at 8 bits resolution stored on socket EPROMS Erasable Programmable Read Only Memories. Each sound features individual gain and a pitch tune quantised into 15 different steps.

EPROM
It is possible to change the soundset by swapping the eproms, use a prommer for this task.


FILTER
The TOM channels are filtered by famous chip Curtis Cem3320

SEQUENCER
Records in real-time mode or step mode
Recording quantisation at variable resolution levels from 1/2 to 1/96 in ten values: 1/2, 1/4, 1/6, 1/8, 1/12, 1/ 16, 1/24, 1/32, 1/48, 1/96 or swing shuffle.

SYNC
Internal frequency tempo range from 40 to 250 BPM, sync mode available in 2 ways:
1- digital Midi clock 
2- analog sync IN at 24 /48 /96 PPQ resolution
Drumtraks outputs at 24 or 48 PPQ resolution

MIDI
Each sound is triggered with velocity levels and pads output MIDi with dynamic.

MEMORY
Holds 3289 notes, 99 patterns (100 measure) and 99 songs.
Data can be saved either to :
- midi exclusive dump
- tape backup"

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KORG littleBits Synth Kit + extras

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"SALE INCLUDES - KORG SYNTH KIT + '10' EXTRA BITS WORTH AROUND £100"

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Two Patchblock Microsynth

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"Hello, this is the pretty amazing Patchblock synthesizer. It's a micro synth that you make modular style patches on your computer and load them to the unit. They can do lots of things like full polyphonic synthesizers, mono synths, or be used as effects units that include filters, bit crushers, delays, and several other things. Really neat new concept. The other thing is they can be connected and to create really complex modular setups.

Check out the website, it's patchblocks.com

Really cool units. I bought four of them to use as effects, extra voices, and filters for my OP-1. Would work great with volca's, OP-1's, and even the MS-20.

I have two colors for sale, one magenta and one white, these also have the blue LED's. Currently for sale as a pair. I realized I am just to busy with other projects to really explore the potential these guys have.

The software is free and in the beta stage, you can download it from the website and start making patches and the emulator will play your results.

Each block gas two knobs, two buttons, stereo audio in, stereo audio out, USB, and the four patchable connections between units. So they can be stereo audio and two digital controls. Really fun addition."

Roland Jupiter-6 VINTAGE ANALOG POLYPHONIC SYNTH

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JEN SX-1000 Synthetone SN 06519 with Mods Demo

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"I followed mods from various sites on the net. especially Neil Johnson's page. (where he proves that it has a 24db filter NOT a 12db as everywhere else states)

I've also documented the installation of the mods on my blog page if you wish to have a read.

The mods completed are:

1. Better quality filter capacitors and for richer VCF sound.

2. Increased LFO speed to almost audible range, much faster than stock

3. Added circuit for Sawtooth up & down waveshapes to LFO as well as standard triangle. (small 3 position switch on fascia) - this affects the VCF LFO and also Vibrato for extra modulation possibilities

4. -1 Oscillator Square wave Sub Oscillator circuit (Noise off switch position engages circuit - noise level controls amount)

5. Equalize and boost White & Pink noise circuit

6. External Audio In (into VCF&VCA section via the Noise off switch postition)

7. Removed trailing power lead and fitted IEC power socket where old power switch was (standard 'kettle' cable) see pics

8. Fitted new power switch where old power cable was located. (see pics)


I have a demo on my Soundcloud account, it's a long one so if the basic waveforms and modulation bores you head for the meaty bottom end stuff to around the 10 minute mark onwards, It does sound even better 'in the flesh', especially the Pulse Width Modulation.
It's just showing a little bit of the modulation possibilities that you can't get from a standard SX1000.

I started with showing basic waveforms with Noise, then Sawtooth, Square, Pulse Width etc and finally the Resonance on it's own without the oscillator and modulated each with Cutoff/Res, LFO speed & shape, VCA LFO & Env Level and added the Sub Osc at various points.

It's not a 'playing' demo, just wibbly wibbly noises showing some of the possibilities, I didn't really use the VCA much on this, or the glide & vibrato but it should give you some idea of what it's capable of. No effects have been used"

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EML ElectroComp Model 101 Vintage Analog Synthesizer

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"EML ElectroComp Model 101 Vintage Analog Synthesizer in excellent condition. Early 70s vintage, serial number 1027. Unit was just serviced by SoCal keyboard guru Randy Jarvis, including cleaning all pots, and contacts. Unit has been fully tested and is guaranteed to work as described or your money will be refunded in full including shipping (domestic sales only). Be sure to scroll down in the listing to see the high resolution photos.

Condition Details:

Some minor scratches but nothing major
Some of the keys are discolored and are a yellowish tint
Parts of the wood veneer have been damaged, see close up photos
There is some corrosion on the metal latches"

Moog Multimoog Vintage Analog Synthesizer SN 1100

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ROLAND Saturn SA-09 Vintage Analog Synthesizer SN 920646

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Roland JUNO-106S Vintage Analog Synth SN 553241

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Vintage Emu EMAX Synthesizer and Digital Sampling Keyboard SN 2641

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"This auction is for the vintage music lover. For those of us like myself who hold true to the fact that plugins can never replace the beauty and nuance of original analog and digital equipment. You are looking at a vintage Emu EMAX Synthesizer and Digital Sampling Keyboard circa 1987. This keyboard is one of the most popular synthesizers of the late 80's. It got a 5 STAR rating on Vintage Synth Explorer and has been used by the likes of U2 to Depeche Mode to the Beastie Boys. This keyboard is in absolutely fantastic cosmetic condition as well as fully functional. There are no dead keys or buttons. The pitch bender, modulation and disk drive all work perfectly. As you can see in the pictures it powers on fine and loads sounds from disk. It has stereo outputs as well as 8 other outputs and an external sampler input. It has full MIDI I/O, World Clock I/O, 2 foot pedal inputs and another mod pedal input. This model is the original Emax but is upgradable to the SE version. I am including the following accessories:

- Power cord
- Original instruction manual
- SE instruction manual and upgrade stickers (for the keyboard faceplate)
- The original receipt from 1987 (tells a part of the history of this particular EMAX)
- The original Hybrid EMAX case
- A copy of the OS Rev 3.2 on floppy disk
- 4 sound disks from Northstar Productions (149 sounds total)
- I will also email a link where you can find all the original sound banks for the EMAX for downloading"

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