See all parts that fit your 2003 A4
900W Max ACA Series Compact Class A/B Monoblock Amplifier
• 300 Watts RMS x 1 @ 4 ohm
• 450 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 900 Watts
• Variable low-pass filter: 30 - 250 Hz
• Subsonic filter: 15 - 50 Hz
• Variable Bass Boost: 0 to +12 dB
• Dimensions: 7.1"W x 15.1"L x 2.0"H
Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen
$7.99
List price $11.99
Install a new Single-DIN or Double-DIN car stereo in select 2002-2009 S4 and A4 and RS4 (Matte Black)
$27.99
List price $67.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)
$399.00
List price $600.00
Double DIN CD Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)
$169.00
List price $189.00
• 300 Watts RMS x 1 @ 4 ohm
• 450 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 900 Watts
• Variable low-pass filter: 30 - 250 Hz
• Subsonic filter: 15 - 50 Hz
• Variable Bass Boost: 0 to +12 dB
• Dimensions: 7.1"W x 15.1"L x 2.0"H
Check out the ACA-450.1 Owner's Manual
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$349.99
List price $420.00
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)
$599.99
List price $750.00
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)
$469.99
List price $620.00
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
List price $119.99
600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System
$999.99
List price $1175.00
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Manufacturer:
Model Number:
ACA-450.1
Weight:
8.70lbs
Internal SKU:
aca4501
Internal Product ID:
109813
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Decent amp for the money.
I was searching for an amp to power a RE Audio SCX 10d4 which needs 450 watts rms.
This is the first amp I've purchased since about 2007 so I wasn't sure whose to choose.
Didn't want to dish out upwards of $200 for such small power.
I came across this one and decided, for the price, how bad of an amp could it be?
In 2007, I did buy some powerbass 2XL 12" subs and loved them.
So I decided to reconnect with the brand.
Very satisfied with this amp.
It powers my subwoofer well and seems to give good clean power to it.
I do I have the sub wired up to present a 2ohm load.
The low pass and subsonic are both decently accurate on the hz cutoff.
Have nothing really bad to say about it.
Runs a little on the warm side.
I'm actually surprised, given what I paid for it.
I did miss that it was a class A/B amp so I was a little shocked at the size although it still fits under the front seat of my 2008 sierra which is all I was after there.
If this amp has the power you need for your setup, I say buy it.
8 found this helpful
Good Amp
I purchased this to run a pair of PPI SN.8 subs. The power matched good for those subs and seems to work well with them. Stays pretty cool and the price was great. My only complaint is that is says "compact" but this thing is 15" long. Not a big deal.
Verified purchase
8 found this helpful
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
