Single slot module of the legendary Transient Designer for the 500 series.

With the Transient Designer TDx the level-independent processing of signal paths is making headway into the world of 500 series rack modules. Working with the Transient Designer is very simple: Attacks can be amplified or attenuated and sustain may be prolonged or shortened. However, the possibilities for studio and live application are seemingly endless.


1 in stock



Technical foundation is SPL‘s Differential Envelope Technology (DET) which allows level-independent dynamic processing by calculating differences in generated envelopes. These envelopes are always tracking the curve of the original signal to provide optimal results in every moment of the music. So only two controls per channel are required to allow the user to completely reshape the attack and sustain characteristics of a sound.

Thanks to the new TDx feature MIX (parallel mix) you can continuously blend between the processed and the unprocessed signal. Thus, the range of functions is extended even further and with the three parameters ATTACK, SUSTAIN and MIX, which offer an intuitive operation, the options of designing transients reach a new dimension of great variety.

The processing may increase the level significantly and following units especially DA converters may clip when transients are boosted.The Output control allows you to adjust the level of the output signal. This ensures that following devices receive the optimal level.


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


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