H Doepfer A-138u Mix & Ladik C-011 Lag (21hp)

Doepfer A-138u

Dual Micro Mixer (2x3)

Module A-138u is a simple, low-cost mixer with two units. Each unit is equipped with three inputs and one output. The upper unit has a trimming potentiometer for each input available that allows to adjust the amplification in the range 0...+1 for each input (factory setting is 1 for all inputs). The inputs of the lower unit all have the same amplification +1.
The output of the upper unit is normalled to the first input of the lower unit. That way the module can be used also as a mixer with five inputs: for this the inputs 1, 2 and 3 of the upper unit ad the inputs 2 and 3 of the lower unit are used. The sum output for all five signals is then the output of the lower unit. As soon as a plug is inserted into input 1 of the lower unit the module becomes a dual 3-in-1 mixer again.
Inputs and Outputs are DC-coupled, i.e. audio and control signals can be mixed.

Application examples:

Mixer for audio signals, e.g. three VCOs preceding a VCF, when the amplifications are adjusted slightly different no signal extinction occurs during the beat of the VCOs

Mixer for control voltages (e.g. LFOs, envelope generators, random voltages)

http://www.doepfer.de/a138u.htm
https://www.modulargrid.net/e/doepfer-a-138u

Ladik C-011 Precision dual lag/slew limiter

Dual lag/slew limiter

Precision dual lag/slew limiter (exponential), max.tuning error under 1 cent.

From top:
CV input jack
LAG setting (max about 5s)
Buffered original signal output
Lagged output
and same for second channel

For portamento/glide, exponential slowering CV changes and so…

Width: 4TE/ 4HP/ 20mm.
Depth: 35mm /1,4″ max.
Current: 15mA max.
Power cable included.

http://ladik.ladik.eu/?page_id=626
https://www.modulargrid.net/e/ladik-c-011-precision-dual-lag-slew-limiter