Rolls DU-30B

Mic Preamp / Audio Ducker

  • Mic preamps with automatic gain reduction (talkover)
  • Sensitivity
  • Adjustable Rolloff and release time
  • Microphone input: XLR
  • AUX Input: RCA
  • Stereo in / output: RCA
  • Power supply included

Further information

Channels 2
Number of microphone inputs 1
Instrument input No
Tubes No
Compressor/Limiter No
Equalizer No
De-Esser No
Phantom power No
Phase Reverse No
External effect loops No
Analogue Outputs RCA
Digitale Outputs None
Headphone connection No
Level Meter No

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Our most popular Preamps
16 customer ratings:
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4 / 5.0
  • handling
  • features
  • sound
  • quality
12 written ratings Read all reviews
Total
handling
features
sound
quality

04.11.2014
I bough this item as I wanted the music volume to decrease when I was speaking, but soon I realized it is not possible to use it as I wanted.

Even if you have a lot of settings which configure the device my problems were the following:
- as soon you make a fsss... or breath stronger, the ducker effect starts and the music volume is lowered .... but this isn't my wish
- another problem is when you have longer pauses between words while speaking as this causes the music volume to increase and then again to decrease.

Of course that depending on exactly what you want to do, this item can be perfect for you.
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Total
handling
features
sound
quality

Good equipment, but could be improved - Supplement

7-Tower-Power, 22.09.2012
Supplement 9.10.12:
On the weekend we wanted to use the ducker at a stadium audience (2000 spectators). Unfortunately, we had to conclude that the ducker itself is very distorted when the signal is looped through when the output level from the console is raised above normal. (Channel and mainout control to "0"). We let the check again in the studio and then decide on the whereabouts ...
-----------------
The functionality is given 100%, it works. The XLR input should not be used directly, even the good old SM58 sounds as sch ....!

Commitment:
I have switched from my 16-channel console without talkover the Main in the line input of the ducker and the out into the amplifier. About the SubOuts I went into the AUX of the ducker. So I can now control each channel as a talkover over the subs. Be the first.

Service:
A drawback from my point of view is that everything can be controlled by Poti, except the amount of peg lowering. There is a recessed button which is to be operated with the screwdriver. What shoud that?
Also, I would have been willing to spend a little more, if instead of the RCA jacks jack or XLR would have been. So I have ordered a few cables ...

Features:
Here I am really missing only one setting, that the level again gently raises, possibly also in the speed controllable. He just comes back full.
Otherwise, all settings are very easy to adjust: how fast the level should return, MicLevel and sensitivity of the triggering signal, all TOP.

Summarized:
A very sensible and good product with the small, mentioned weaknesses. In any case, the only way to have a mixing console with multiple channels as a DJ part is to retrofit with Talkover. It is installed in the 1000 EUR class or in digital ...
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Incl. VAT; plus 20 € shipping
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Offers include 24% Greek VAT and are valid as long as stocks last. Shipping costs to Greece are 20 EUR, free shipping on orders above 298 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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