Manufacturer's Description
Ever wondered how synthesizers actually work?
This kit is your chance to find out – by building a real VCO from scratch.
Using just a handful of components and a breadboard, you’ll create a fully functional analog oscillator – the core building block of any synth voice. Along the way, you’ll learn about basic electronic concepts like voltage, current, and resistance, and how they come together to create oscillation, control pitch, and shape waveforms.
You don’t need any background in electronics. The manual walks you through the process step by step: from plugging in your first component to tuning the finished circuit. Every idea is explained in plain language, with clear diagrams and intuitive visuals.
By the end, you’ll have a working analog VCO with saw and pulse outputs, 1V/oct tracking, temperature compensation, FM and PWM inputs… plus the option to turn it into a proper Eurorack module using the included PCB and panel.
But more importantly – you’ll understand how it works.
What’s included:
- All components for the breadboard build
- Eurorack panel + PCB (for final assembly)
- Power cable
- 40+ page illustrated manual (PDF download)
What you’ll need:
- A breadboard
- Jumper wires
- Dual power supply (or two 9V batteries with clip connectors)
Want a smoother start?
The mki x es.EDU Labor is our purpose-built prototyping platform designed to make your DIY synth journey as intuitive and frustration-free as possible. It combines everything you need to build and test circuits – no extra gear required. Check it out here.
This is the first kit in the mki x es.EDU series – a collaboration between Erica Synths and Moritz Klein to make analog synth design accessible to everyone.
NB! These kits are self-guided and designed for learning. While we don’t offer individual support for failed builds, the manuals are detailed and beginner-friendly, giving you the tools to troubleshoot and succeed on your own.
How much is my shipping?
Shipping costs are calculated automatically at checkout. Simply add items to your cart and proceed to the checkout page, where you'll see the available shipping options and their prices. VAT at the applicable rate for your country will also be displayed at checkout.
European Union orders:
- Standard shipping is free on orders over €100. Express shipping is available on orders over €100, and free on orders over €400.
Poland orders:
- Standard shipping is free on orders over 250 PLN. Express shipping is free on orders over 500 PLN.
What about local taxes?
By default prices on the site include sales tax at 20%. The precise sales tax rate for your country will be calculated at checkout.
Do you ship to my country?
We ship to all EU member states from our warehouse in Warsaw, Poland. Add an item to your cart and enter your country and postcode to see the available shipping options and prices for your location. If you have any questions about shipping to your country, drop us an email at info@signalsounds.eu and we'll be happy to help.
Shipping methods
All EU orders are shipped via UPS. We offer two service levels:
- UPS Standard – our default shipping option. Delivery times vary by country (see estimated delivery times below).
- UPS Express Saver – next business day delivery to most EU destinations.
Each product page shows the estimated delivery time for your location, so you'll always know what to expect before you order.
Estimated delivery times (Standard shipping)
The times below are estimates in working days from dispatch, based on UPS Standard service. Express Saver delivers by the next business day to most destinations.
| Country | Estimated delivery (working days) |
|---|---|
| Austria | 2–3 |
| Belgium | 2 |
| Bulgaria | 4–5 |
| Croatia | 2–4 |
| Cyprus | 10 |
| Czechia | 2–3 |
| Denmark | 3 |
| Estonia | 2–3 |
| Finland | 3–5 |
| France | 2–4 |
| Germany | 2 |
| Greece | 5–7 |
| Hungary | 2–3 |
| Ireland | 4–6 |
| Italy | 3–5 |
| Latvia | 2–3 |
| Lithuania | 1–2 |
| Luxembourg | 2 |
| Malta | 5–7 |
| Netherlands | 2 |
| Poland | 1–2 |
| Portugal | 4–5 |
| Romania | 3–4 |
| Slovakia | 2–3 |
| Slovenia | 2–3 |
| Spain | 4 |
| Sweden | 3–5 |
These times are estimates and are not guaranteed. Delivery may occasionally take a little longer due to customs processing, local conditions, or carrier delays.
Dispatch times
Orders placed before 15:00 CET (Central European Time) on a working day are normally dispatched the same day. Orders placed after 15:00 CET, or on weekends and public holidays, will be dispatched on the next working day.
If you have an urgent order, please email us at info@signalsounds.eu before placing your order and we'll do our best to accommodate you.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch at info@signalsounds.eu if you have questions.
Product Overview
Manufacturer's Description
Ever wondered how synthesizers actually work?
This kit is your chance to find out – by building a real VCO from scratch.
Using just a handful of components and a breadboard, you’ll create a fully functional analog oscillator – the core building block of any synth voice. Along the way, you’ll learn about basic electronic concepts like voltage, current, and resistance, and how they come together to create oscillation, control pitch, and shape waveforms.
You don’t need any background in electronics. The manual walks you through the process step by step: from plugging in your first component to tuning the finished circuit. Every idea is explained in plain language, with clear diagrams and intuitive visuals.
By the end, you’ll have a working analog VCO with saw and pulse outputs, 1V/oct tracking, temperature compensation, FM and PWM inputs… plus the option to turn it into a proper Eurorack module using the included PCB and panel.
But more importantly – you’ll understand how it works.
What’s included:
- All components for the breadboard build
- Eurorack panel + PCB (for final assembly)
- Power cable
- 40+ page illustrated manual (PDF download)
What you’ll need:
- A breadboard
- Jumper wires
- Dual power supply (or two 9V batteries with clip connectors)
Want a smoother start?
The mki x es.EDU Labor is our purpose-built prototyping platform designed to make your DIY synth journey as intuitive and frustration-free as possible. It combines everything you need to build and test circuits – no extra gear required. Check it out here.
This is the first kit in the mki x es.EDU series – a collaboration between Erica Synths and Moritz Klein to make analog synth design accessible to everyone.
NB! These kits are self-guided and designed for learning. While we don’t offer individual support for failed builds, the manuals are detailed and beginner-friendly, giving you the tools to troubleshoot and succeed on your own.
Technical Specs
Shipping Details
How much is my shipping?
Shipping costs are calculated automatically at checkout. Simply add items to your cart and proceed to the checkout page, where you'll see the available shipping options and their prices. VAT at the applicable rate for your country will also be displayed at checkout.
European Union orders:
- Standard shipping is free on orders over €100. Express shipping is available on orders over €100, and free on orders over €400.
Poland orders:
- Standard shipping is free on orders over 250 PLN. Express shipping is free on orders over 500 PLN.
What about local taxes?
By default prices on the site include sales tax at 20%. The precise sales tax rate for your country will be calculated at checkout.
Do you ship to my country?
We ship to all EU member states from our warehouse in Warsaw, Poland. Add an item to your cart and enter your country and postcode to see the available shipping options and prices for your location. If you have any questions about shipping to your country, drop us an email at info@signalsounds.eu and we'll be happy to help.
Shipping methods
All EU orders are shipped via UPS. We offer two service levels:
- UPS Standard – our default shipping option. Delivery times vary by country (see estimated delivery times below).
- UPS Express Saver – next business day delivery to most EU destinations.
Each product page shows the estimated delivery time for your location, so you'll always know what to expect before you order.
Estimated delivery times (Standard shipping)
The times below are estimates in working days from dispatch, based on UPS Standard service. Express Saver delivers by the next business day to most destinations.
| Country | Estimated delivery (working days) |
|---|---|
| Austria | 2–3 |
| Belgium | 2 |
| Bulgaria | 4–5 |
| Croatia | 2–4 |
| Cyprus | 10 |
| Czechia | 2–3 |
| Denmark | 3 |
| Estonia | 2–3 |
| Finland | 3–5 |
| France | 2–4 |
| Germany | 2 |
| Greece | 5–7 |
| Hungary | 2–3 |
| Ireland | 4–6 |
| Italy | 3–5 |
| Latvia | 2–3 |
| Lithuania | 1–2 |
| Luxembourg | 2 |
| Malta | 5–7 |
| Netherlands | 2 |
| Poland | 1–2 |
| Portugal | 4–5 |
| Romania | 3–4 |
| Slovakia | 2–3 |
| Slovenia | 2–3 |
| Spain | 4 |
| Sweden | 3–5 |
These times are estimates and are not guaranteed. Delivery may occasionally take a little longer due to customs processing, local conditions, or carrier delays.
Dispatch times
Orders placed before 15:00 CET (Central European Time) on a working day are normally dispatched the same day. Orders placed after 15:00 CET, or on weekends and public holidays, will be dispatched on the next working day.
If you have an urgent order, please email us at info@signalsounds.eu before placing your order and we'll do our best to accommodate you.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch at info@signalsounds.eu if you have questions.
