UK car audio comparison

Best Car Amplifiers Under £300
in 2026.

A practical comparison of car amplifiers and processors using channel count, useful power and the system matching checks that matter.

Prices and stock should be checked on the retailer page before purchase.

Our approach. We compare the specifications shown on the retailer product pages and explain who each model suits. This is not a hands-on test.

Our pick

Juice Car Audio JA902 900W 2-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCS Output, Bass Boost, Class A-B

A 2-channel amplifier option for adding cleaner headroom to a planned car-audio system.

Check price

Full specifications

Our picks compared

This table includes every verified specification available for the products in this roundup. Check the retailer page for the latest price, stock and fitment details.

Product	Price	Availability	Brand	Model	Warranty	Product Type	Channels	Listed Power	Power Detail	Feature	Additional Feature	Shipping Weight	Full specifications
Juice Car Audio JA902 900W 2-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCS Output, Bass Boost, Class A-B	£55.50	In stock	Juice	JA902	1 Year Warranty	Amps	2	900W	ClassA-B, RMS 50-75W	Bridgeable, Hi Level Input	Not listed	Not listed	All listed fields are shown
Juice JA1504 1500W 4-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCA Output, Bass Boost, Class A-B	£89.99	In stock	Juice	JA1504	1 Year Warranty	Amps	4	1500W	Not listed	Not listed	Not listed	1 kg	Subwoofer Design: Active
Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier	£99.50	In stock	Kenwood	KAC-M1814	Not listed	Amps	4	400W	ClassD, RMS 0-50W	Bridgeable, Hi Level Input	Not listed	Not listed	Class: D amplifier with 400 peak power supports louder volume for Car, Marine and Motorsports users with lo Type: Compact Amp
Juice JA1201D 1200W 1-Channel Mono Peak Power Car Amplifier, Bass Remote, 1 Ohm Stable, RCA Output	£99.99	In stock	Juice	JA1201D	1 Year Warranty	Amps	1	1200W	1 Ohm, Class D, Monoblock, RMS 0-500W	RCA Output, SPL Amp	Remote Control	1 kg	Class: D amplifier in the series and it won't take up too much boot space either Subwoofer Design: Active
Ground Zero GZIA 100.2 300 Watts 2-channel high quality class A/B amplifier	£99.99	In stock	Ground Zero	Not listed	Not listed	2 Channel Amp	2	300W	2 Channel, 2 Ohm, 4 Ohm, ClassA-B	Not listed	Not listed	Not listed	Frequency Response: 8 Hz to 28 kHz Dimensions: 168 x 49 x 175 mm Key Features Flexible System Design: You can run it in Speaker Design: Component Subwoofer Design: Active
Pioneer GM-A4704 520W 4 Channel Bridgeable Amplifier	£129.99	In stock	Pioneer	GM-A4704	Not listed	4 Channel Amp	4	520W	ClassA-B, RMS 0-50W	Bridgeable, Hi Level Input	Not listed	Not listed	All listed fields are shown

Product notes

What each pick is best at

Best all-round amplifier

Juice Car Audio JA902 900W 2-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCS Output, Bass Boost, Class A-B

A 2-channel amplifier option for adding cleaner headroom to a planned car-audio system.

What we like

Lowest listed price in this comparison at £55.50, £34.49 below Juice JA1504.
The only pick here listing 900W power, giving it a clear difference from the other 5 options.
The listed 2-channel layout makes its intended role easier to match to speakers or a subwoofer.

What we don't like

Unlike some alternatives, the listing does not show a comparable channels figure, so matching it to the rest of the system takes more checking.
The amplifier or processor still needs matching to the speakers, subwoofer, impedance and available installation space.

Price	£55.50
Availability	In stock
Channels	2
Listed Power	900W
Model	JA902
Warranty	1 Year Warranty
Brand	Juice
Feature	Bridgeable, Hi Level Input
Power Detail	ClassA-B, RMS 50-75W
Product Type	Amps

Check CarAudioCentre.co.uk

Best for multi-speaker systems

Juice JA1504 1500W 4-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCA Output, Bass Boost, Class A-B

A 4-channel amplifier option for adding cleaner headroom to a planned car-audio system.

What we like

At £89.99, it costs £34.49 more than Juice JA902, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 1500W power, giving it a clear difference from the other 5 options.
The listed 4-channel layout makes its intended role easier to match to speakers or a subwoofer.

What we don't like

It is £34.49 above the cheapest pick, so the higher price depends on whether the distinct 1500W power suits the installation.
A four-channel installation needs more wiring and load matching than a compact single-purpose setup.

Price	£89.99
Availability	In stock
Channels	4
Listed Power	1500W
Model	JA1504
Subwoofer Design	Active
Warranty	1 Year Warranty
Brand	Juice
Product Type	Amps
Shipping Weight	1 kg

Check CarAudioCentre.co.uk

Best for a dedicated subwoofer

Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier

A 4-channel amplifier option for adding cleaner headroom to a planned car-audio system.

What we like

At £99.50, it costs £44.00 more than Juice JA902, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 400W power, giving it a clear difference from the other 5 options.
The listed 4-channel layout makes its intended role easier to match to speakers or a subwoofer.

What we don't like

It is £44.00 above the cheapest pick, so the higher price depends on whether the distinct 400W power suits the installation.
A four-channel installation needs more wiring and load matching than a compact single-purpose setup.

Price	£99.50
Availability	In stock
Channels	4
Listed Power	400W
Model	KAC-M1814
Brand	Kenwood
Class	D amplifier with 400 peak power supports louder volume for Car, Marine and Motorsports users with lo
Feature	Bridgeable, Hi Level Input
Power Detail	ClassD, RMS 0-50W
Product Type	Amps
Type	Compact Amp

Check CarAudioCentre.co.uk

Best for system tuning

Juice JA1201D 1200W 1-Channel Mono Peak Power Car Amplifier, Bass Remote, 1 Ohm Stable, RCA Output

A 1-channel amplifier option for adding cleaner headroom to a planned car-audio system.

What we like

At £99.99, it costs £44.49 more than Juice JA902, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 1-channel channels, giving it a clear difference from the other 5 options.
The listed 1-channel layout makes its intended role easier to match to speakers or a subwoofer.

What we don't like

It is £44.49 above the cheapest pick, so the higher price depends on whether the distinct 1-channel channels suits the installation.
A mono layout is intended for a subwoofer rather than a full speaker system, so it is less flexible than multi-channel picks.

Price	£99.99
Availability	In stock
Channels	1
Listed Power	1200W
Model	JA1201D
Subwoofer Design	Active
Warranty	1 Year Warranty
Additional Feature	Remote Control
Brand	Juice
Class	D amplifier in the series and it won't take up too much boot space either
Feature	RCA Output, SPL Amp
Power Detail	1 Ohm, Class D, Monoblock, RMS 0-500W
Product Type	Amps
Shipping Weight	1 kg

Check CarAudioCentre.co.uk

Best for adding headroom

Ground Zero GZIA 100.2 300 Watts 2-channel high quality class A/B amplifier

A 2-channel amplifier option for adding cleaner headroom to a planned car-audio system.

What we like

At £99.99, it costs £44.49 more than Juice JA902, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 300W power, giving it a clear difference from the other 5 options.
The listed 2-channel layout makes its intended role easier to match to speakers or a subwoofer.

What we don't like

It is £44.49 above the cheapest pick, so the higher price depends on whether the distinct 300W power suits the installation.
The amplifier or processor still needs matching to the speakers, subwoofer, impedance and available installation space.

Price	£99.99
Availability	In stock
Channels	2
Listed Power	300W
Speaker Design	Component
Subwoofer Design	Active
Brand	Ground Zero
Frequency Response	8 Hz to 28 kHz Dimensions: 168 x 49 x 175 mm Key Features Flexible System Design: You can run it in
Power Detail	2 Channel, 2 Ohm, 4 Ohm, ClassA-B
Product Type	2 Channel Amp

Check CarAudioCentre.co.uk

Best for a planned upgrade

Pioneer GM-A4704 520W 4 Channel Bridgeable Amplifier

A 4-channel amplifier option for adding cleaner headroom to a planned car-audio system.

What we like

At £129.99, it costs £74.49 more than Juice JA902, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 520W power, giving it a clear difference from the other 5 options.
The listed 4-channel layout makes its intended role easier to match to speakers or a subwoofer.

What we don't like

It is £74.49 above the cheapest pick, so the higher price depends on whether the distinct 520W power suits the installation.
A four-channel installation needs more wiring and load matching than a compact single-purpose setup.

Price	£129.99
Availability	In stock
Channels	4
Listed Power	520W
Model	GM-A4704
Brand	Pioneer
Feature	Bridgeable, Hi Level Input
Power Detail	ClassA-B, RMS 0-50W
Product Type	4 Channel Amp

Check CarAudioCentre.co.uk

Buying guide

What to check before ordering

Match the amplifier to the speakers or subwoofer at the correct impedance. Plan power cable routing, fuse placement, signal cables and ventilation before deciding that the largest watt figure is the best fit.

Use the model number as the final reference. Retailer images and prices can change, and vehicle fitment should be confirmed for the exact make, model and year.

Best Car Amplifiers Under £300in 2026.

Juice Car Audio JA902 900W 2-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCS Output, Bass Boost, Class A-B

Our picks compared

What each pick is best at

Juice Car Audio JA902 900W 2-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCS Output, Bass Boost, Class A-B

What we like

What we don't like

Juice JA1504 1500W 4-Channel Bridgeable Car Power Amplifier, Thermal Protection, RCA Output, Bass Boost, Class A-B

What we like

What we don't like

Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier

What we like

What we don't like

Juice JA1201D 1200W 1-Channel Mono Peak Power Car Amplifier, Bass Remote, 1 Ohm Stable, RCA Output

What we like

What we don't like

Ground Zero GZIA 100.2 300 Watts 2-channel high quality class A/B amplifier

What we like

What we don't like

Pioneer GM-A4704 520W 4 Channel Bridgeable Amplifier

What we like

What we don't like

What to check before ordering

Best Car Amplifiers Under £300
in 2026.