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DD Audio RL-SA300.4 4 x 75W Redline SA Series 4-Channel Mini Chassis Amplifier

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DD Audio RL-SA300.4 4 x 75W Redline SA Series 4-Channel Mini Chassis Amplifier



Amplifier Is Very Small so Installation Is Painless Even in A Tighter Car!

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SA Series 4-Channel Mini Chassis Amplifier
The DD Audio SA300.4 is designed to make space-constrained installations a breeze. Do not be fooled by its small stature in 4-Ohm Bridged Mode this little powerhouse can produce over 2 x 120 watts of power! The physical size of this amplifier is very small so installation is painless even in a tighter car. The amplifier also has speaker-level inputs, so you can connect to the car's original player.


  • Great Sound Quality
  • MOSFET Power Supply Amplifier
  • 4 Gauge Set Screw Power Terminals
  • 12 Gauge Set Screw Speaker Terminals
  • Variable 12dB/oct Crossovers
  • Remote Subwoofer Control (SA500.1)
  • 5-Way Protection: Speaker Short, Thermal, Overload, Hi/Low Voltage, DC Offset


  • Operating Voltage: 9-16V
  • Test Voltage: 14.4V
  • Output Channels: 4
  • Cont. Wattage @ 4-Ohm: 4 x 65 / 2 x 120W
  • Cont. Wattage @ 2-Ohm: 4 x 75W
  • Dynamic: 600W
  • Max Current Draw: 30A
  • RCA Input Sensitivity: 6 - 0.25V
  • High Level Sensitivity: 20 - 1.1V
  • Frequency Response: 85Hz
  • S/N Ratio: 70dB
  • Damping Factor: 10 - 3000
  • THD: 0.1%
  • High Pass Filter: 35 - 250Hz
  • Subsonic Filter: 35 -250Hz
  • Power Wire Gauge - In: 4
  • Speaker Wire Gauge - Out: 12
  • Dimensions: 180.0 x 96.0 x 4.03mm (7.0 x 3.8 x 1.69")
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, ZipPay, Credit Card or Bank Deposit 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.

Standard Shipping

Frankie's offer a $9 FLAT RATE Australia-wide shipping, no matter how many items however, some larger/heavier items may incur a higher fee which will be communicated with you when your order(s) being processed. Where stock allows, Frankie's aim to have all orders processed and shipped out within 48 hrs or 2 business days. Shipping times to most capital and regional cities is 3-4 days however, rural areas or zones outside of the carriers normal run should expect an additional 72hrs (3 business days)

Express Shipping

For express shipping, we offer a $25 FLAT RATE Australia wide shipping, however, larger/heavier items and remote areas may incur additional/higher fee which will be advised/quoted at the time of processing your order.

P.O. Boxes and Parcel Lockers

Unfortunately, Frankie's Auto Electrics are unable to ship to PO Boxes, Parcel Lockers for insurance reasons at this time, an alternate shipping option may be offered. Additional fees may be applicable.

International Addresses

At this present stage, Frankies Auto Electrics are unable to ship to International Addresses.

Out of Stock items

We carry over 6000 different items and from time to time we are waiting on freight ourselves. It's rarely a problem but from time to time, an item will be backordered and the customer notified via email if the lead time is expected to exceed 8 business days. Your patience with this is extremely appreciated as we always try and get the best prices possible for you.

Important Announcement

Due to COVID-19, According to Australian Government, Social Distancing rule for all parcel will be ATL as delivery drivers are not allowed to take signatures.

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