KORG EX-800 Analog Synthesizer with HAWK-800 and Blue LED Mods SN 004862

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"It's been cleaned, serviced, LEDs replaced with a blue set, the Hawk-800 mod installed and It's been in a clean, smoke-free, climate controlled environment.

The Hawk-800 mod greatly expands this synthesizer's capabilities: expanded midi and sysex implementation, adds memory for 3 additional banks of 64 patches, no need for battery, sustain pedal support, velocity, and so much more!
Complete details on the mod can be found at https://www.hawk800.com/
Hawk-800 manuals, midi implementation chart, and quick reference are included in the software firmware downloads available on the Hawk-800 site. (The EX-800 in this listing is on firmware version 2.59, current available is 2.68)

Comes preloaded with 256 factory, downloaded, and custom patches."

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Korg Hawk-800 (EX-800) Polyphonic 8 Voice Analogue Desktop Synthesizer SN 005417

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"The Korg EX-800 is an 8 voice polyphonic synth and this one is in really good shape (which I paid £300 for). This synth has been modified and includes additional knobs for - Filter cutoff, Resonance, pseudo FM amount , Noise + a switch to choose a 12dB or 24 dB filter. The desktop version is very hard-wearing with its metal case, also giving it a good weight.

I have also modified it further by installing the HAWK-800 upgrade (the kit costs about £100 to buy + my time to install) which adds an unbelievable amount of features to the original synth. If you go to https://www.hawk800.com/ this explains in detail all the extras you get from it."

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Korg Poly800 Synthesizer Keyboard with Hawk800 Mods & More

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"Korg Poly800 Mark 1 Synthesizer

with loads of mods making an extreme uber synth with full MIDI spec and loads of new parameters:

The knobby hardware mods were professional installed by Circuitbenders.co.uk:

The "Moog slayer" mod which allows extreme filter resonance and manual control: Cutoff knob, Resonance knob, 12/24db switch.
The "FM800" mod : Source switch, FM Modulation depth knob
Audio Input: Level Knob, Path switch, Filter CV socket.
Hawk800 and Atomahawk boards both installed with all these extra features:

full MIDI spec whereas the original Poly800 had none.
Loads of new parameters: 4 LFOs, many LFO shapes, masses of modulation routings possible, free running or not.
Flash memory so no internal battery required.
7 sequencer memories (originally 1).
MIDI velocity sensitivity.
Moog Slayer and FM800 mods also included so they can be MIDI controlled.
Portamento Mono mode.
4 patch banks
and much much more.
All these mods turn the friendly Poly800 into an extremely versatile and deep synthesizer.

The synth itself is in good condition with the usual minor scratches of something this age. Supplied also is a printed Poly800 manual (not original) and Hawk800 manual, plus PSU."

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HAWK HE-1130 tape delay echo SN 81103

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"Tape delay that uses an 8-track catridge for its tape source. Warm tape delay sound with the ability to self oscillate. Includes 1 NOS 8-track cartridge. NOS 8-track cartridges are still avaliable making this a cheap alternative to more expensive tape delays. The cartridges also last a long time compared to shorter tape loop based delay machines. No cartridge modification is needed for this effects unit."

Hawk HR-15 Spring reverb + Yamaha QY-10

YouTube via abertronic.

"This is a demo of the Hawk hr-15 spring reverb and a yamaha QY-10"