Quad Variable LFO
The QV-L is a quad low-frequency oscillator with a variety of waveforms, flexible modulation options, clock sync and presets.
Waveforms included as of Firmware 0.9.0:
- Sine, Triangle, Saw Up, Saw Down, Shark Left and Right, and Square waves, all with variable shape controls (pulse-width for the square wave).
- Sample & Hold with selectable source (CV in, any other LFO, etc).
- Three morphing waves: Sine to Tri, Saw to Tri, Saw to Square
- Stair-step up, down and up-down
- A Sine / Saw / Square sequence-able waveform.
- A variable-pulse width Square wave sequence-able waveform.
- A three output Lorenz attractor chaotic waveform.
- A Perlin-noise style random waveform
- A Logistic Map chaotic waveform generator.
LFO Rates can be set using a variety of modes. There are two logarithmic response modes (Wide and Slow) to cover traditional ranges. There is a Hz mode for specifying the rate from 1Hz to 246Hz. There are also 3 tempo-based modes: 16th, Beat and Bar.
The QV-L's tempo can be set internally, or via a 16th note tempo clock to a Gate input. The QV-L can also be connected to a Vector Sequencer for sync and bi-directional MIDI communication.
The QV-L also includes two simple, linear EGs for modulation duties. The EGs currently have two modes: AR: Attack/Release, and ASR: Attack/Sustain/Release.
The QV-L supports extensive modulation via 8 modulation busses, with selectable sources, destinations and amounts. Sources include 4 CV inputs, all 4 LFOs, and either of two internal envelope generators.
In order to accommodate multi-output algorithms such as the Lorenz Attractor, and for general versatility, each of the 4 CV outputs can be custom mapped. Output processing also includes a selection of handy operations (invert, rectify, etc) and both sale and offset controls.
LFOs can be reset (and EGs triggered) from either of the two front-panel Gate Inputs, or from the TrigA or Trig B buttons.
Most edit pages have animated waveform displays.
The Main Edit page offers 6 customizable parameters for each performance control.
All settings can be saved via onboard presets in flash memory. Up to 40 presets can be saved.
Dimensions
12 HP
35 mm deep
Current Draw
120 mA +12V
20 mA -12V
- Width: 12HP
- Depth: 35mm
- Power: 120 mA +12V / 20 mA -12V / 0 mA 5V
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
Quad Variable LFO
The QV-L is a quad low-frequency oscillator with a variety of waveforms, flexible modulation options, clock sync and presets.
Waveforms included as of Firmware 0.9.0:
- Sine, Triangle, Saw Up, Saw Down, Shark Left and Right, and Square waves, all with variable shape controls (pulse-width for the square wave).
- Sample & Hold with selectable source (CV in, any other LFO, etc).
- Three morphing waves: Sine to Tri, Saw to Tri, Saw to Square
- Stair-step up, down and up-down
- A Sine / Saw / Square sequence-able waveform.
- A variable-pulse width Square wave sequence-able waveform.
- A three output Lorenz attractor chaotic waveform.
- A Perlin-noise style random waveform
- A Logistic Map chaotic waveform generator.
LFO Rates can be set using a variety of modes. There are two logarithmic response modes (Wide and Slow) to cover traditional ranges. There is a Hz mode for specifying the rate from 1Hz to 246Hz. There are also 3 tempo-based modes: 16th, Beat and Bar.
The QV-L's tempo can be set internally, or via a 16th note tempo clock to a Gate input. The QV-L can also be connected to a Vector Sequencer for sync and bi-directional MIDI communication.
The QV-L also includes two simple, linear EGs for modulation duties. The EGs currently have two modes: AR: Attack/Release, and ASR: Attack/Sustain/Release.
The QV-L supports extensive modulation via 8 modulation busses, with selectable sources, destinations and amounts. Sources include 4 CV inputs, all 4 LFOs, and either of two internal envelope generators.
In order to accommodate multi-output algorithms such as the Lorenz Attractor, and for general versatility, each of the 4 CV outputs can be custom mapped. Output processing also includes a selection of handy operations (invert, rectify, etc) and both sale and offset controls.
LFOs can be reset (and EGs triggered) from either of the two front-panel Gate Inputs, or from the TrigA or Trig B buttons.
Most edit pages have animated waveform displays.
The Main Edit page offers 6 customizable parameters for each performance control.
All settings can be saved via onboard presets in flash memory. Up to 40 presets can be saved.
Dimensions
12 HP
35 mm deep
Current Draw
120 mA +12V
20 mA -12V
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.
