The Doepfer A-140 ADSR Envelope Generator is a versatile module that can also be used as a modulation device. The A-140 receives voltages through the Gate input and generates a variable voltage, changing in time (an envelope). The module features outputs for both the normal, positive voltage, and for the inverted form as well. These are ideal for voltage-controlled modulation, or for processing the ins and outs of other modules. The A-140 is equipped with ADSR controls, giving you exceptional control over the shape of your sound. The Doepfer A-140 ADSR Envelope Generator is both powerful and flexible, and would make an astounding addition to any modular system.
Controls
A: This is the Attack time control. When the envelope is triggered, a control voltage is put out at the two Output sockets, rising to maximum in the time set by this control
D: This is the Decay time control. This is the time it takes for the control voltage output to fall to the level set by the sustain control (S)
S: This is the Sustain time control. This is the steady-state voltage level after the decay phase. This level remains the same until the gate is closed
R: This is the Release time control. As soon as the gate signal finishes, the control voltage falls to zero at a rate set by this control
ADSR Control: Envelope state indication LED.
Time Range: Three-position range switch. It allows you to select your desired time range for the envelope:
H: High. This time range can go up to minutes
M: Medium. This is the standard mid-range for envelope lengths
L: Low. Down to less than 100 microseconds
Inputs/Outputs
Gate: Input for Gate voltage. This is a switched socket, normalled to the INT.GATE circuit on the system bus. A gate signal on this circuit will trigger the ADSR, even without an input to the socket. If however, you connect a gate signal to the socket, then the connection with the system bus is broken and the ADSR is triggered from this socket instead. The normalling can be removed by taking out the small red jumper in the top right-hand corner of the PCB
Retrig: Input for re-trigger voltage. This can be connected to sources such as the output of an LFO. This means that whilst the gate is open, the envelope will re-trigger any time it senses a pulse from the LFO
Output (Below Retrig.): Responds to a Gate signal by putting out the voltage envelope set by the ADSR controls. Whenever the ADSR is triggered, this output carries the envelope voltage as defined by the ADSR parameters
Output (Above Inverse Output): Responds to a Gate signal by putting out the voltage envelope set by the ADSR controls. Whenever the ADSR is triggered, this output carries the envelope voltage as defined by the ADSR parameters
Inverse Output: Responds to a Gate signal by putting out an inversion of the voltage envelope set by the ADSR controls. It carries exactly the same voltage envelope as the regular outputs, but inverted, with negative instead of positive voltages
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK, 'next working day' shipping is free if the order value is over £150, and £5 otherwise. We can also ship on a 'next working day before 12pm' service, which costs £6 for orders over £150 and £7.50 for orders under £150.
Shipping to mainland EU typically costs between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of DPD, Royal Mail and Parcelforce for the UK, and for international orders it's either DHL, FedEx, UPS, Royal Mail or Parcelforce depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we aim to dispatch the same working day if we get the order before 16:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes the couriers may come to collect a little earlier than scheduled which would also push an order into the next day.
Saturday/Sunday shipping
If you're in the UK and you order before 16:00 on a Friday then we can send something for a Saturday or Sunday delivery with DPD. This is FREE for order values over £350, £5 for order values between £75 and £250, and £7 for order values under £75. (NB: this applies to UK mainland addresses only). Please note that any orders placed after 16:00 on a Friday will ship on the Monday.
International shipping times
Since April 2020, the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer. There is absolutely nothing we can do about this, unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
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 if you have questions.
Product Overview
The Doepfer A-140 ADSR Envelope Generator is a versatile module that can also be used as a modulation device. The A-140 receives voltages through the Gate input and generates a variable voltage, changing in time (an envelope). The module features outputs for both the normal, positive voltage, and for the inverted form as well. These are ideal for voltage-controlled modulation, or for processing the ins and outs of other modules. The A-140 is equipped with ADSR controls, giving you exceptional control over the shape of your sound. The Doepfer A-140 ADSR Envelope Generator is both powerful and flexible, and would make an astounding addition to any modular system.
Controls
A: This is the Attack time control. When the envelope is triggered, a control voltage is put out at the two Output sockets, rising to maximum in the time set by this control
D: This is the Decay time control. This is the time it takes for the control voltage output to fall to the level set by the sustain control (S)
S: This is the Sustain time control. This is the steady-state voltage level after the decay phase. This level remains the same until the gate is closed
R: This is the Release time control. As soon as the gate signal finishes, the control voltage falls to zero at a rate set by this control
ADSR Control: Envelope state indication LED.
Time Range: Three-position range switch. It allows you to select your desired time range for the envelope:
H: High. This time range can go up to minutes
M: Medium. This is the standard mid-range for envelope lengths
L: Low. Down to less than 100 microseconds
Inputs/Outputs
Gate: Input for Gate voltage. This is a switched socket, normalled to the INT.GATE circuit on the system bus. A gate signal on this circuit will trigger the ADSR, even without an input to the socket. If however, you connect a gate signal to the socket, then the connection with the system bus is broken and the ADSR is triggered from this socket instead. The normalling can be removed by taking out the small red jumper in the top right-hand corner of the PCB
Retrig: Input for re-trigger voltage. This can be connected to sources such as the output of an LFO. This means that whilst the gate is open, the envelope will re-trigger any time it senses a pulse from the LFO
Output (Below Retrig.): Responds to a Gate signal by putting out the voltage envelope set by the ADSR controls. Whenever the ADSR is triggered, this output carries the envelope voltage as defined by the ADSR parameters
Output (Above Inverse Output): Responds to a Gate signal by putting out the voltage envelope set by the ADSR controls. Whenever the ADSR is triggered, this output carries the envelope voltage as defined by the ADSR parameters
Inverse Output: Responds to a Gate signal by putting out an inversion of the voltage envelope set by the ADSR controls. It carries exactly the same voltage envelope as the regular outputs, but inverted, with negative instead of positive voltages
Technical Specs
Shipping Details
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK, 'next working day' shipping is free if the order value is over £150, and £5 otherwise. We can also ship on a 'next working day before 12pm' service, which costs £6 for orders over £150 and £7.50 for orders under £150.
Shipping to mainland EU typically costs between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of DPD, Royal Mail and Parcelforce for the UK, and for international orders it's either DHL, FedEx, UPS, Royal Mail or Parcelforce depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we aim to dispatch the same working day if we get the order before 16:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes the couriers may come to collect a little earlier than scheduled which would also push an order into the next day.
Saturday/Sunday shipping
If you're in the UK and you order before 16:00 on a Friday then we can send something for a Saturday or Sunday delivery with DPD. This is FREE for order values over £350, £5 for order values between £75 and £250, and £7 for order values under £75. (NB: this applies to UK mainland addresses only). Please note that any orders placed after 16:00 on a Friday will ship on the Monday.
International shipping times
Since April 2020, the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer. There is absolutely nothing we can do about this, unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
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 if you have questions.
