CACar Audio Guide UK

UK car audio comparison

Best Mono Subwoofer Amplifiers
in 2026.

Mono amplifiers are designed around a single bass channel, so the important comparison is sustained output at the impedance your subwoofer needs. Installation space and power wiring deserve equal attention.

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

Stinger SPT5501 MONO BANANA PLUGS

A 1-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.

ProductPriceAvailabilityBrandModelWarrantyProduct TypeChannelsListed PowerPower DetailFeatureAdditional FeatureShipping WeightFull specifications
Stinger SPT5501 MONO BANANA PLUGS£19.99In stockStingerSPT5501Not listedFitting Accessories1Not listedNot listedNot listedNot listedNot listedAll listed fields are shown
Juice JWTRU81 8 Gauge Mono/2 Channel 1800w Amplifier Wiring Kit£29.99In stockJuiceJWTRU811 Year WarrantyAmp Wiring and Fitting Parts21800WNot listedFullWiringKitNot listedNot listed
  • Size Detail: 8 Gauge
  • Subwoofer Design: Active
  • Type: Fuse, Power Cable, RCACable, Speaker Cable
Kicker 46KISLOAD2 Smart-Radio Interface For Adding An Aftermarket Mono Amplifier£58.95In stockKicker46KISLOAD2Not listedFitting Accessories14373WNot listedNot listedNot listedNot listedAll listed fields are shown
Juice JA1201D 1200W 1-Channel Mono Peak Power Car Amplifier, Bass Remote, 1 Ohm Stable, RCA Output£99.99In stockJuiceJA1201D1 Year WarrantyAmps11200W1 Ohm, Class D, Monoblock, RMS 0-500WRCA Output, SPL AmpRemote Control1 kg
  • Class: D amplifier in the series and it won't take up too much boot space either
  • Subwoofer Design: Active
Pioneer GM-D8701 1600W Class-D Mono Amplifier, with Bass boost remote£131.75In stockPioneerGM-D8701Not listedPioneer11600W1 Ohm, Class D, Monoblock, RMS 0-500WHi Level Input, SPL AmpRemote ControlNot listed
  • Class: D amp might just be what you’re looking for, D digital amplifiers mark a dramatic improvement in power output capability, yet are 50% smaller tha, AB amplifiers, D amplifier has a wired bass boost remote control for optimal bass level adjustment according to lis
Kenwood X502-1 X-Series Class D Mono-Channel Power Amplifier£134.75In stockKenwoodX502-1Not listedAmps1500WClass D, Monoblock, RMS 0-500WHi Level InputNot listedNot listedAll listed fields are shown

Product notes

What each pick is best at

Stinger SPT5501 MONO BANANA PLUGS

Best all-round amplifier

Stinger SPT5501 MONO BANANA PLUGS

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

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.
  • A mono layout is intended for a subwoofer rather than a full speaker system, so it is less flexible than multi-channel picks.
Price£19.99
AvailabilityIn stock
Channels1
ModelSPT5501
BrandStinger
Product TypeFitting Accessories
Check CarAudioCentre.co.uk
Juice JWTRU81 8 Gauge Mono/2 Channel 1800w Amplifier Wiring Kit

Best for multi-speaker systems

Juice JWTRU81 8 Gauge Mono/2 Channel 1800w Amplifier Wiring Kit

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

What we don't like

  • It is £10.00 above the cheapest pick, so the higher price depends on whether the distinct 2-channel channels suits the installation.
  • The amplifier or processor still needs matching to the speakers, subwoofer, impedance and available installation space.
Price£29.99
AvailabilityIn stock
Channels2
Listed Power1800W
ModelJWTRU81
Subwoofer DesignActive
Warranty1 Year Warranty
BrandJuice
FeatureFullWiringKit
Product TypeAmp Wiring and Fitting Parts
Size Detail8 Gauge
TypeFuse, Power Cable, RCACable, Speaker Cable
Check CarAudioCentre.co.uk
Kicker 46KISLOAD2 Smart-Radio Interface For Adding An Aftermarket Mono Amplifier

Best for a dedicated subwoofer

Kicker 46KISLOAD2 Smart-Radio Interface For Adding An Aftermarket Mono Amplifier

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

What we don't like

  • It is £38.96 above the cheapest pick, so the higher price depends on whether the distinct 4373W power 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£58.95
AvailabilityIn stock
Channels1
Listed Power4373W
Model46KISLOAD2
BrandKicker
Product TypeFitting Accessories
Check CarAudioCentre.co.uk
Juice JA1201D 1200W 1-Channel Mono Peak Power Car Amplifier, Bass Remote, 1 Ohm Stable, RCA Output

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 don't like

  • It is £80.00 above the cheapest pick, so the higher price depends on whether the distinct 1200W power 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
AvailabilityIn stock
Channels1
Listed Power1200W
ModelJA1201D
Subwoofer DesignActive
Warranty1 Year Warranty
Additional FeatureRemote Control
BrandJuice
ClassD amplifier in the series and it won't take up too much boot space either
FeatureRCA Output, SPL Amp
Power Detail1 Ohm, Class D, Monoblock, RMS 0-500W
Product TypeAmps
Shipping Weight1 kg
Check CarAudioCentre.co.uk
Pioneer GM-D8701 1600W Class-D Mono Amplifier, with Bass boost remote

Best for adding headroom

Pioneer GM-D8701 1600W Class-D Mono Amplifier, with Bass boost remote

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

What we don't like

  • It is £111.76 above the cheapest pick, so the higher price depends on whether the distinct 1600W power 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£131.75
AvailabilityIn stock
Channels1
Listed Power1600W
ModelGM-D8701
Additional FeatureRemote Control
BrandPioneer
ClassD amp might just be what you’re looking for, D digital amplifiers mark a dramatic improvement in power output capability, yet are 50% smaller tha, AB amplifiers, D amplifier has a wired bass boost remote control for optimal bass level adjustment according to lis
FeatureHi Level Input, SPL Amp
Power Detail1 Ohm, Class D, Monoblock, RMS 0-500W
Product TypePioneer
Check CarAudioCentre.co.uk
Kenwood X502-1 X-Series Class D Mono-Channel Power Amplifier

Best for a planned upgrade

Kenwood X502-1 X-Series Class D Mono-Channel Power Amplifier

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

What we don't like

  • It is £114.76 above the cheapest pick, so the higher price depends on whether the distinct 500W power 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£134.75
AvailabilityIn stock
Channels1
Listed Power500W
ModelX502-1
BrandKenwood
FeatureHi Level Input
Power DetailClass D, Monoblock, RMS 0-500W
Product TypeAmps
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.