The Transient Designer for 500 Series.



The Transient Designer TDx brings level-independent dynamics processing to the world of 500 Series.


The On/Bypass switch activates (On) or deactivates (Bypass) the module. This allows you to quickly switch between processed and unprocessed signals.

Signal LED

The Sig LED (Sig) indicates whether an audio signal is present at the input which has a level higher than -20 dB.


The attack can be used to increase or attenuate the attack phase of a signal by up to 15 dB. A positive attack increases the amplitude of the attack phase. A negative attack attenuates the amplitude of the attack phase.


With Sustain, the decay phase of a signal can be increased or attenuated by up to 24 dB. Positive Sustain extends the decay. Negative Sustain shortens the decay.


The mix control allows continuous blending between processed (WET) and unprocessed (DRY) signals.


With the output control, the output gain can be attenuated in order to optimally drive the following devices.

The Differential Envelope Technology

Differential Envelope Technology (DET) enables, through differential envelopes, level-independent processing of dynamic signal characteristics.

Only two controls are needed to control the transient response.

Attack… that’s how it’s done:

Sustain… that’s how it’s done:


Input & Output; balanced

Maximum input & output gain
21 dBu
Input impedance
20 kΩ
Output impedance
150 Ω
Common mode rejection
> 82 dB
Frequency range (-3 dB)
10 Hz – 100 kHz
THD & N (0 dBu, 10 Hz – 22 kHz)
0.03 %
Noise (A-weighted)
-92.3 dBu
Dynamic range
113 dB

Dimensions & Weight

Single-spaced module for 500 Series
Unit weight
0.65 kg
1.43 lbs
Shipping weight (incl. packaging)
0.9 kg
1.98 lbs

Reference: 0 dBu = 0,775V. All specifications are subject to change without notice.


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