Kobol Expander I synthesizer clone DIY kit

Important! This project is an almost (99%) exact copy of the original product. The power supply implemented on the board will not be able to fully power 2 circuits of the type “Transistor array heater” (Portabellabs-like pA726). Therefore, you will have to look for the original UA726 or completely redo the power supply. I have a reliable contact in China that still has stocks of UA726 (Korea). If you decide to buy a set of boards from me, I will gladly provide you with the e-mail of my supplier.

This project is an almost (99%) exact copy of the original product. The power supply implemented on the board will not be able to fully power 2 circuits of the type “Transistor array heater” (Portabellabs-like pA726). Therefore, you will have to look for the original UA726 or completely redo the power supply. I have a reliable contact in China that still has stocks of UA726 (Korea). If you decide to buy a set of boards from me, I will gladly provide you with the e-mail of my supplier.

You can replace the UA726 with an array of transistors CA3046 or CA3086 and thermal compensation TEMPCO 1k. In this case, I will provide you with a table with changes in resistors. However, I cannot guarantee that this solution will completely eliminate the temperature drift of the oscillators.

I do not provide original circuit diagrams, because I spent about two years to completely eliminate all the inconsistencies and errors of the circuits available on the network.

Some demo-sounds may be found here: https://soundcloud.com/deliandiver

Плата управления клона синтезатора Kobol Expander I
Kobol Expander I synthesizer clone Controls PCB
Two sides «Controls» PCB of Kobol Expander I synthesizer clone Dimensions: 420x120 mm. Weight: 125 gr. Color: white. Version: 0.92. Material: FR4. Surface finish: HASL Pb Free
Availability: 13 in stock
$96.85
Плата «Голос-1» клона синтезатора Kobol Expander I
Kobol Expander I synthesizer clone Voice-1 PCB
Two sides «Voice-1» PCB of Kobol Expander I synthesizer clone Dimensions: 143x120 mm. Weight: 52 gr. Color: white. Version: 1.0. Material: FR4. Surface finish: HASL Pb Free
Availability: 13 in stock
$70.20
Плата «Голос-2» клона синтезатора Kobol Expander I
Kobol Expander I synthesizer clone Voice-2 PCB
Two sides «Voice-2» PCB of Kobol Expander I synthesizer clone Dimensions: 80x120 mm. Weight: 29 gr. Color: white. Version: 1.0. Material: FR4. Surface finish: HASL Pb Free
Availability: 13 in stock
$59.80
Плата «Входная группа» клона синтезатора Kobol Expander I
Kobol Expander I synthesizer clone AC-Input PCB
Two sides «AC-Input» PCB of Kobol Expander I synthesizer clone Dimensions: 125x79 mm. Weight: 25 gr. Color: blue. Version: 1.0. Material: FR4. Surface finish: HASL Pb Free
Availability: 13 in stock
$4.68
Плата преобразователь SSM2040 на HM2040A
«SSM2040 to HM2040A» addapter PCB
Two sides «SSM2040 to HM2040A» PCB Dimensions: 24x24 mm. Weight: 1.2 gr. Color: blue. Version: 1.0. Material: FR4. Surface finish: HASL Pb Free
Availability: 90 in stock
$1.30
Лицевая панель клона синтезатора Kobol Expander I
Kobol Expander I synthesizer front panel
Dimensions: 472x178 мм. Thickness: 2.5 mm. Method: direct metal graphics. Meterial: aluminium. Weight: 560 g.
Availability: 2 in stock
$98.80