Doepfer A-101-2 Vactrol Lowpass Gate

Vactrol lowpass gate

  • Combination of low-pass filter (LP) and VCA
  • Based on the idea of the Buchla module 292
  • The frequency (in LP mode) or the amplitude (in VCA mode) can be controlled manually (F / A) and via 2 external control voltage inputs: CV1 (without an attenuator) and CV2 (with attenuator)
  • Function of the module can be set via toggle switch (LP / VCA )
  • Width: 8TE / 8HP / 40.3 mm
  • Depth: 50 mm (measured from the rear of the front panel)
  • Power requirements: +20 mA (+12 V) / 20 mA (-12 V)
No JavaScript? No Audio Samples! :-(

Sound Sample

LP - VCA 
0:00
  • LP - VCA

Further Information

Width 8 TE / HP

These are other customers' choices:

Customers who looked at this item have bought these:

Doepfer A-101-2 Vactrol Lowpass Gate
27% bought this exact product
Doepfer A-101-2 Vactrol Lowpass Gate
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
$91 Add to Basket
Doepfer A-106-5 SEM Filter
10% bought Doepfer A-106-5 SEM Filter $73
Doepfer A-124 Wasp Filter SE
9% bought Doepfer A-124 Wasp Filter SE $77
Doepfer A-124 Wasp Filter
8% bought Doepfer A-124 Wasp Filter $77
Dreadbox Eudemonia
8% bought Dreadbox Eudemonia $81.97
Our most popular Filter Modules
19 Customer Ratings:
  • 5
  • 4
  • 3
  • 2
  • 1
4.5 /5
  • handling
  • features
  • sound
  • quality
Total
Wow
Simon P, 29.07.2013
This is possibly one of my most used Doepfer modules (bar my VCO's) and gets used on pretty much every patch I make.

It works brilliantly as a VCA, but it really shines when you switch modes and the vactoral kicks in on the Low Pass Filter. It just sounds so good and is great for percussive sounds of all types.

Another great point about it is that it also works very very well as a sinewave oscillator as it's got one of the sweetest sines in modularland when self oscillating. And it tracks very well.

So if you're in the market for a VCA, get this module.
If you're in the market for a filter, get this module.

Just get this module. It's a cracker.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
Doepfer A-101-2 LPG
Blair, 02.06.2014
The Doepfer A-101-2 is a classic Low Pass gate design - a combination of Low Pass Filter and VCA. It is built around a Vactrol - a combination of light source and photo sensitive receptor, which acts like a VCA with a slow decay or 'ring' to it.

It can function as either or both effects. It also has an additional trick up its sleeve in that you can select LPF, VCA or the combined effect (known as Low Pass Gate or LPG) by feeding a combination of 2 gate signals into the unit. This can lead to rhythmic, pulsating sounds from the unit.

The A-101-2 is easy to use, and can function as a straight forward filter module, or (by setting the resonance to minimum) can deliver the classic Buchla LPG patch. It is a very cost-effective unit, in that it can respond just to a clock pulse or gate, and does not require an envelope generator for the VCA to cut the output to zero.

The only reservation I have with this unit is that the Vactrols employed tend to deliver a faster decay than LPG's from other makers I have tried. On the other hand, I have read that there can be individual differences between 2 Vactrols, so that another A-101-2 may sound quite different.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Show variations of this product
Doepfer A-101-2 Vactrol Lowpass Gate
(19)
Doepfer A-101-2 Vactrol Lowpass Gate

Vactrol lowpass gate Combination of low-pass filter (LP) and VCA, Based on the idea of the Buchla module 292, The frequency (in LP mode) or the amplitude (in VCA mode) can be controlled manually (F...

  • Width: 8 TE / HP
  • exponential: No
  • Module: Yes
  • linear: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-180-2 Multiples
(76)
Doepfer A-180-2 Multiples

Passive Multi-Port Distributor 8x Interconnected jacks, Sockets are divided into 2x quadruple groups; but can also be modified to an eight-multiple (soldering bridge on the circuit board), Width:...

  • Width: 2 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-124 Wasp Filter SE
(55)
Doepfer A-124 Wasp Filter SE

Wasp Filter Special edition, Special 12 dB multimode filter, Circuit technology of the "EDP Wasp", Black front, Yellow pot caps, Width: 8 HP, Depth: 45 mm, Power requirements: +30 mA (+12 V)/-10 mA...

  • Width: 8 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-138s Mini Stereo Mixer
(33)
Doepfer A-138s Mini Stereo Mixer

Mini Stereo Mixer 4-in-2 mix module in Eurorack format, Four inputs with attenuator and pan control, plus two 3.5 mm mini jack outputs, Width: 8 HP, Depth: 30 mm, Power requirements: +10 mA (+12 V)...

  • Modul Type: Stereo
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Width: 8 TE / HP
  • Basic System: No
  • Accessories: No
Doepfer A-151
(25)
Doepfer A-151

Quad Sequential Switch Module Electronic 4-position rotary switch, Trigger input, Reset input, 4 Inputs, 4 Outputs, Voltages of -8V to + 8V can be processed, Euro rack format, Width 4 HP, Depth: 35...

  • Switch Modul: Yes
  • Width: 4 TE / HP
  • Module: Yes
  • CV-Editor/VC-Processor: No
  • Tools: No
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-135-2
(12)
Doepfer A-135-2

Eurorack Module Quad VCA / Voltage Controller Mixer, Compact version of the A-135-1, 4 Separate linear VCAs, each with CV input, signal input and signal output, Sum signal of all VCAs additionally...

  • Width: 8 TE / HP
  • exponential: No
  • linear: Yes
Doepfer A-160-2 Clock Divider II
(16)
Doepfer A-160-2 Clock Divider II

Frequency Divider For clock/trigger/gate signals, Width: 4 TE/ 4 HP / 20 mm

  • Width: 4 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-180-3 Dual Buffered Multiple
(28)
Doepfer A-180-3 Dual Buffered Multiple

Synthesizer module Double buffered 1-in-3 multiple, For buffering and duplication of CV and audio signals, Width: 4 TE / 4HP / 20.0 mm

  • Width: 4 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-155
(24)
Doepfer A-155

Analog-/ Trigger Sequencer 2 Switch rows with 8 steps each, Eurorack format, Width: 50 HP, Depth: 40 mm, Power requirement: +80 mA (+ 12 V) / -20 mA (-12 V), Optional expander module: Article Nr...

  • Width: 50 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-134-1 Vc Pan MKII
(17)
Doepfer A-134-1 Vc Pan MKII

Voltage-Controlled Panning Module The A-134 is a voltage-controlled panning module. The module consists of 2 linear VCAs, which are inversely controlled by a control voltage, i.e., the more the...

  • Width: 8 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-156
(37)
Doepfer A-156

Dual Quantiser The A-156 Module is a dual control voltage quantiser. A quantiser converts a continuous input control voltage in the range of 0 ... 10V into a stepped output voltage in the same...

  • Switch Modul: No
  • Module: Yes
  • CV-Editor/VC-Processor: Yes
  • Tools: No
  • Empty Rack, Or Housing: No
  • Width: 8 TE / HP
  • Basic System: No
  • Accessories: No
Doepfer A-180-2 Vintage Edition
(21)
Doepfer A-180-2 Vintage Edition

Passive Multi-Connector Eight interconnected jacks can be split into 2 groups (solder bridge on the assembly side), Width: 2 HP, Vintage edition with black front plate

  • Width: 2 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
$91 €83.19
Plus $49.30 shipping

The price in USD is a guideline price only!

Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
Share This Product
Your Contacts
Phone: +49-9546-9223-30
FAX: +49-9546-922328
(4)
Recently Viewed
Behringer CAT

Analogue Synthesiser VCO 1 with 4 miscible waveforms (sawtooth, triangle, pulse and suboctave), Pulse width modulation and two adjustable modulation sources, VCO 2 with 3 mixable waveforms (sawtooth triangle and suboctave) and two adjustable modulation sources, Low pass filter...

Recently Viewed
Adam T8V

Adam T8V; Active Nearfield Monitor; 8" Woofer; 1.9" U-ART Accelerated Ribbon Tweeter; 2x Class-D Amp: 70 Watts RMS Woofer, 20 Watts RMS Tweeter; Frequency Range: 33 Hz - 25 kHz; Crossover Frequency: 2.6 kHz; max. SPL: 118 dB (1m /...

Recently Viewed
SE Electronics Reflexion Filter X White

SE Electronics Reflexion Filter X White, portable device for recording live sources with reduced room ambience, helps to obtain a dry vocal or instrument recording, useful in studios without proper acoustic treatment, dimensions: diameter/with 41 cm, height 31 cm, depth...

Recently Viewed
K&M 80310

K&M 80310 disinfectant stand with bracket; bottle holder dimensions: 102 x 91 mm; base diameter: 275 mm; drip cup can be removed for cleaning; with bracket to fix the disinfectant bottle ; round base; weight: 3,6 kg; colour: pure white;...

(2)
Recently Viewed
iZotope Music Maker's Bundle

iZotope Music Maker's Bundle (ESD); Plugin-Bundle; contains eight essential tools for audio editing and creative music production; consists of BreakTweaker Exp, Stutter Edit, Trash 2, Iris 2, Elements Suite (Nectar Elements, Neutron Elements, Ozone Elements und RX Elements); supported formats...

Recently Viewed
Rode Wireless GO White

Rode Wireless GO White; Digital Wireless Microphone System; ultra-compact and lightweight set of transmitter and receiver; series III 2.4 GHz digital transmission; clip-on transmitter TX with built-in microphone (omni capsule); maximum SPL: 100 dB; Frequency Range: 50 Hz – 20...

Recently Viewed
Rode Lavalier GO White

Rode Lavalier GO White; Lavalier Microphone; pairs perfectly with Røde Wireless GO (item 463781); works with most other devices with a 3.5mm TRS microphone input; compatible with most laptops, DSLR cameras, mobile recorders etc.; broadcast grade omnidirectional condensor capsule; Frequency...

(4)
Recently Viewed
AKG K-371-BT

Bluetooth Studio Headphones Closed, Circumaural, Up to 40 hours of operation without cables, 50 mm Driver, Impedance: 32 Ohm, Sensitivity: 114 dB SPL / V, Frequency range: 5 - 40,000 Hz, Oval faux-leather ear pads, Cable on one side,...

Recently Viewed
Behringer Eurorack Go

Behringer Eurorack Go; Eurorack case; two rows with 140 HP each, build-in busboard with 32 headers for Eurorack modules;, vertical positioning possible via integrated tilt stand; 96 sliding nuts (M3) pre-installed; maximum module depth: 40mm (lower row), 62mm (upper row);...

(1)
Recently Viewed
Mackie CR3-X

Multimedia Monitors Equipped with a 3" woofer and a 0.75" tweeter, Power: 50 W, Frequency range: 80 - 20,000 Hz (-3 dB), Housing: MDF, Power supply: 100 - 240 V AC, 50/60 Hz, Dimensions (W x H x D):...

Recently Viewed
Saramonic Blink 500 B4

Saramonic Blink 500 B4; Ultracompact 2.4GHz Dual-Channel Wireless Microphone System with 2 transmitter and Lavalier for Apple iPhone and iPad that provides broadcast-quality sound; The RXDi battery-free MFi certified Lightning receiver is extremely lightweight, space efficient and works perfectly when...

(1)
Recently Viewed
K&M 80320

K&M 80320 Disinfectant stand for Euro dispenser; base diameter: 275 mm; round base; drip cup can be removed for cleaning; two different drilling patterns, so Euro dispensers for 350/500 ml and 1,000 ml containers can be attached; weight: 4,1kg; colour:...

Give Feedback
Feedback Found an error or want to give us feedback about this page?

We're looking forward to hearing from you and aim to solve any problems as soon as we can.