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SoundQubed U4-500 Multichannel Full-Range Amplifier

SoundQubed U4-500 Multichannel Full-Range Amplifier

$799.95 $799.45
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Provides Ample Power for UTV, Boats, Touring Motorcycles, Dune Buggies, and Other Adventure Crafts!


The U4-500 multichannel full-range amplifier provides ample power for UTV, boats, touring motorcycles, dune buggies, and other adventure craft! These full-range amplifiers are powerful, stable, and take up very little space. Because of the small form factor, you can run a sub, mids, and highs from one amp when space is at a premium.

Unlike our monoblock amplifiers, Utility Series amplifiers will drive the full frequency range of music to more than just subwoofers. This 1 ohm stable multichannel full-range amp powers subs, mids, and highs for those who like to play hard.

Versatile filtering and crossover settings let you power and tune a variety of system designs. Because of their high output and small footprint, the U4-500’s are ideal for very loud outdoor PA builds and speaker arrays. Bridging 2 channels at a 2 ohm load yields about 1200 W RMS for enough power to drive a serious subwoofer.

For daily driver vehicles with a standard speaker configuration, the Q4-150 coupled with an S Series monoblock will give you a more appropriate amount of power.

Let’s look at a simple system built around a U4-500 (given the appropriate charging upgrades). Channels 1 and 2 each power a separate pair of QP-MR6.5 midrange woofers. Bridging channels 3 and 4 puts out around 1200 W RMS at a 2 ohm load. That’s plenty of power for a HDS3.210 or HDS3.212 subwoofer. With 500 W RMS per channel, there are plenty of options to amplify your adventure.

Make sure your charging system is up to the challenge of powering a full-range amplifier. We do not recommend running the U4-500 on a stock electrical charging system. Upgrading your alternator, wiring, and battery will each help avoid damaging drops in voltage and/or current.

The U Series Amplifiers require between 12-14.8 V from a charging system. AGM 12V batteries are a good fit. Lithium batteries that don’t require high voltage are also a good choice when running a full-range amp. Powersport battery upgrades are available in various designs that give you added juice with limited space in mind.

U Series Amplifiers do not have an IP rating. You should completely avoid submersion and/or saltwater environments. The amp casing doesn’t have sealed edges to keep water out. However, the circuit board has a water resistant coating to protect against humidity or very small amounts of incidental moisture.


  • Channels 4ch
  • Cont Wattage @ 4ohm 4x150
  • Cont Wattage @ 2ohm 4x250
  • Cont Wattage @ 1ohm 4x500
  • S/N Ration >100dB
  • Input Voltage Sensitivity 8 - 0.2
  • Power Wire Gauge – In 4
  • Speaker Wire Gauge – Out 16
  • Diminesions (in) 7.3 x 8.9 x 2.5
  • Dimensions (mm) 185 x 225 x 65

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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund less a 20% re-stocking fee and any shipping costs which are unable to be retrieved. Frankies will pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

The balance of the refund will be issued as a store credit for purchase of your next product or paid directly back into your PayPal account. You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

To organise a return of an item, please contact the store the purchase was made from, either via phone, email or dropping into the store.


Frankies offer $9 FLAT RATE Australia-wide shipping, no matter the number of items however, some larger/heavier items may incur a higher fee which will be noted during the checkout procedure. Frankies do not ship to PO Boxes, Parcel Lockers or addresses outside of Australia

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