$8.80 to $16.50 CAPPED PRICE SHIPPING for orders up to 20kg To Most Areas. Orders over $1,000 FREE SHIPPING

Rolls DU30b Audio Ducker with Mic & Background Music Preamp



Only 2 left in stock - order soon.

The Rolls DU30b is a microphone preamp and background music preamp. When an announcement is made into the microphone, the music is automatically “ducked” under the announcement. Then the music is brought back to it’s previous level.

Warranty: 12 Months

  • Automatically ducks music under announcements
  • Perfect for restaurants and small clubs
  • Clean, Quiet Mic Preamp 

Frequency Response: 20 Hz - 40 kHz
Input Impedance 100KΩ unbalanced, 600 Ω balanced
THD + Noise: <0.03% typical
Noise Floor: -78 dB
Indicators Power: LED
Input/Output: jacks XLR balanced input
RCA unbalanced input and output

Size: 4" x 4" x 1.5"
Weight: 1 lb. (.5 kg)

Power: 12 - 16 VDC 50mA
5 x 1.2 mm DC Jack - Center Negative

Click here to download the Rolls DU30b manual

Order weight is calculated on whichever of the dead (actual) or volumetric weight is the greatest. As of 10/9/21 capped $8.80 to $16.50 for up to 20kg to most areas. For orders under $50 options are Standard Postage $8.80 or Express Shipping for $16.50. Orders over $1,000 ship for free. Express Shipping covers one delivery attempt so please provide an address where someone is available to sign for courier delivery between 9am and 5pm weekdays. You can instruct us to ask the courier to leave your parcel unattended in a safe place, although please be aware that if anything happens to the parcel, neither us nor the courier company can be held responsible. Work addresses are a great delivery option. If using a work address please include the business' name.

* for some larger items does not apply to Australian remote island locations, some mainland remote locations (outside Darwin NT and Perth WA metro areas) or outside Australia. If unsure if you are entitled to capped shipping it is best to contact us prior to placing order.

COVID Sydney Lockdown Update - Currently, in line with NSW government rules, we are closed to the public but here working and shipping out orders each day as per normal. Sydney customers - please don't visit us, order online and we will courier or post your order. Click and collect at our back door is also available so long as time for collection is prearranged. As normal we are contactable by phone and email during business hours.