The Doepfer A-148 Dual Sample & Hold/Track & Hold module provides you with two identical S&H sub-modules. Each of these is designed to generate 'staircase' voltages. Patching in a signal to the sample input of a sub-module allows the A-148 to sample the signal at a rate set by the signal that is patched into the trigger input, and is held at that voltage at the S&H output. The 'staircase' shape of the voltage is determined by the type of waveform patched into the sample input. Patching in noise or random signals will result in random patters, whilst an LFO would produce a rising or falling staircase pattern. Each sub-module is equipped with an LED to provide visual indication of the voltage polarity of the sampled signal.
Usage Examples
Random Arpeggios
The A-148 can be used in conjunction with a module such as the Doepfer A-118 to create random voltages from the A-118's random output. An LFO triggers the S&H module, so that with every oscillation of the LFO, a new random voltage is output to your VCO's CV input. If you patch an A-130 VCA in before the VCO, you can adjust the Gain and Out amounts to restrict the frequency range of the random voltages to whatever you desire. You can also use a similar setup, but patch the S&H voltage output to the CV input of a filter set to high resonance to produce a variety of interesting rhythmic timbral changes.
Glisando
If the CV output from a keyboard is patched into the Doepfer A-170 Slew Limiter, the A-148 can be triggered by the rising edge of an LFO, which samples the output from the slew limiter, and produces a staircase voltage which controls the pitch of a VCO. With this configuration, playing two notes, particularly ones that are spaced widely apart, produces an interesting glissando effect.
Controls & Indicators
Indication LED: Each sample and hold sub-module features an LED to give you visual feedback regarding the polarity of the sampled and held signal
Inputs/Outputs
Each S&H sub-module/section features the same I/O configuration.
Trig. In: This is the sub-module's trigger input. The trigger input signal determines the rate at which the sampling takes place. Triggering takes place at the leading edge of the waveform, so the pulse width is not important
Smp. In: This is the sub-module's sample input. Simply patch in the signal you wish to sample. The voltage must be in the range of -12V to +12V to prevent damage to the module
S&H Out: This is the sub-module's output for the sampled and held signal
Specifications
Width: 4HP/20mm
Depth: 30mm (Measured from the rear side of the front panel)
Current:
+12V: +20mA
-12V: -20mA
- Width: 4HP
- Depth: 30mm
- Power: 20 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
The Doepfer A-148 Dual Sample & Hold/Track & Hold module provides you with two identical S&H sub-modules. Each of these is designed to generate 'staircase' voltages. Patching in a signal to the sample input of a sub-module allows the A-148 to sample the signal at a rate set by the signal that is patched into the trigger input, and is held at that voltage at the S&H output. The 'staircase' shape of the voltage is determined by the type of waveform patched into the sample input. Patching in noise or random signals will result in random patters, whilst an LFO would produce a rising or falling staircase pattern. Each sub-module is equipped with an LED to provide visual indication of the voltage polarity of the sampled signal.
Usage Examples
Random Arpeggios
The A-148 can be used in conjunction with a module such as the Doepfer A-118 to create random voltages from the A-118's random output. An LFO triggers the S&H module, so that with every oscillation of the LFO, a new random voltage is output to your VCO's CV input. If you patch an A-130 VCA in before the VCO, you can adjust the Gain and Out amounts to restrict the frequency range of the random voltages to whatever you desire. You can also use a similar setup, but patch the S&H voltage output to the CV input of a filter set to high resonance to produce a variety of interesting rhythmic timbral changes.
Glisando
If the CV output from a keyboard is patched into the Doepfer A-170 Slew Limiter, the A-148 can be triggered by the rising edge of an LFO, which samples the output from the slew limiter, and produces a staircase voltage which controls the pitch of a VCO. With this configuration, playing two notes, particularly ones that are spaced widely apart, produces an interesting glissando effect.
Controls & Indicators
Indication LED: Each sample and hold sub-module features an LED to give you visual feedback regarding the polarity of the sampled and held signal
Inputs/Outputs
Each S&H sub-module/section features the same I/O configuration.
Trig. In: This is the sub-module's trigger input. The trigger input signal determines the rate at which the sampling takes place. Triggering takes place at the leading edge of the waveform, so the pulse width is not important
Smp. In: This is the sub-module's sample input. Simply patch in the signal you wish to sample. The voltage must be in the range of -12V to +12V to prevent damage to the module
S&H Out: This is the sub-module's output for the sampled and held signal
Specifications
Width: 4HP/20mm
Depth: 30mm (Measured from the rear side of the front panel)
Current:
+12V: +20mA
-12V: -20mA
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.
