Manufacturer's description
This is our new Stereo Envelope Follower, an analog/digital hybrid for better dynamic range analysis. The incoming audio signal gain can be set with the [GAIN] control, the signal is then fully rectified and passed through an analog envelope follower with a fixed short attack and decay.
This analog signal is then sent into a 12bit ADC (analog to digital converter) of an MCU (microcontroller unit) from here on the signal is processed digitally. Whenever the ADC detects clipping the [CLIP] led will turn On.
The digitized signal is then passed through a Savitsky-Golay filter for noise reduction smoothing the incoming signal. Next the signal is slewed using the [ATTACK] and [DECAY] controls. The MCU keeps a history of the last sampling points and detects the minimum and maximum values of the signal which reflect the current dynamic range and maps the signal minimum and maximum amplitude to 0V and the maximum voltage detected. Avoiding the discharge of the analog envelope capacitor.
This new mapped signal is then processed via the [RESPONSE CURVE] control balacing the response like one would with a standard AD envelope with LOG/EXP control. The [ENV. GAIN] attenuverter control goes up to x2 amplification and sets the attenuation / amplification factor of the output range, the red led monitors this level. The led uses pwm control for faster response and better visualization of the output signal across the full output range.
Finally the [OFFSET] allows to displace the signal’s voltage up or down.
The [THRESHOLD] control sets the level to compare to the output signal and turns the [GATE] output On when the signal is above the threshold.
The [GATE LED] show the output state.
The [CV OUT] carries the Envelope signal (0 to +10V) while the [INV. CV] Output carries an inversion of the signal (-10V to 0v).
The [AVG. OUT] outputs the average of both Left and Right CVs (0 to +10V) while the [INV. AVG.] outputs the inverted average signal (-10V to 0v).
The [STEREO / DUAL MONO] switch allows to use the left channel controls to operate the right channel for stereo operation or keep them independent in dual mono. In Stereo mode only the Right channel gain will be independent.
Left input is normalled to the Right input.
- Width: 10HP
- Depth: 45mm
- Current: +12V 70mA / -12V 40mA
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 it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically 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 Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx 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 normally dispatch the same working day if we get the order before 15:00. 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 FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
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.
Saturday shipping
If you're in the UK and you order before 15:00 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
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
Manufacturer's description
This is our new Stereo Envelope Follower, an analog/digital hybrid for better dynamic range analysis. The incoming audio signal gain can be set with the [GAIN] control, the signal is then fully rectified and passed through an analog envelope follower with a fixed short attack and decay.
This analog signal is then sent into a 12bit ADC (analog to digital converter) of an MCU (microcontroller unit) from here on the signal is processed digitally. Whenever the ADC detects clipping the [CLIP] led will turn On.
The digitized signal is then passed through a Savitsky-Golay filter for noise reduction smoothing the incoming signal. Next the signal is slewed using the [ATTACK] and [DECAY] controls. The MCU keeps a history of the last sampling points and detects the minimum and maximum values of the signal which reflect the current dynamic range and maps the signal minimum and maximum amplitude to 0V and the maximum voltage detected. Avoiding the discharge of the analog envelope capacitor.
This new mapped signal is then processed via the [RESPONSE CURVE] control balacing the response like one would with a standard AD envelope with LOG/EXP control. The [ENV. GAIN] attenuverter control goes up to x2 amplification and sets the attenuation / amplification factor of the output range, the red led monitors this level. The led uses pwm control for faster response and better visualization of the output signal across the full output range.
Finally the [OFFSET] allows to displace the signal’s voltage up or down.
The [THRESHOLD] control sets the level to compare to the output signal and turns the [GATE] output On when the signal is above the threshold.
The [GATE LED] show the output state.
The [CV OUT] carries the Envelope signal (0 to +10V) while the [INV. CV] Output carries an inversion of the signal (-10V to 0v).
The [AVG. OUT] outputs the average of both Left and Right CVs (0 to +10V) while the [INV. AVG.] outputs the inverted average signal (-10V to 0v).
The [STEREO / DUAL MONO] switch allows to use the left channel controls to operate the right channel for stereo operation or keep them independent in dual mono. In Stereo mode only the Right channel gain will be independent.
Left input is normalled to the Right input.
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 it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically 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 Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx 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 normally dispatch the same working day if we get the order before 15:00. 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 FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
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.
Saturday shipping
If you're in the UK and you order before 15:00 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
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.
