How big is the SP-300.2 MINI?

230 x 112 x 46 mm, with 4 mounting points and the aluminium fins left clear for air.

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 2

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 3

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 4

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 5

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 6

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 7

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 8

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 9

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 10

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 11

SP-300.2 MINI 2-channel class D car audio amplifier 300W x2 RMS at 4 ohm – SP Audio – view 12

SP-300.2 MINI 2-channel amplifier presented in an SP Audio car audio store

SP-300.2 MINI with its black collector's wooden case and printed user manual on a workbench

spaudio

SP-300.2 MINI — 2-CHANNEL CLASS D AMPLIFIER 300W RMS x2

Name: SP-300.2 MINI — 2-CHANNEL CLASS D AMPLIFIER 300W RMS x2
Brand: spaudio
SKU: 92002
Price: 214.00 EUR
Availability: InStock

€214,00

€428,00

ذخیره €214,00

مقدار:

✅

ReadyShips in 24/48 h from Italy

Pay in easy, interest-free installments with Klarna.

SUPER POWER AUDIO
DESIGNED IN ITALY
MMXXVI

2 channels · class D · mini series

300 watts RMS
per channel.

Two channels for the front stage — or one bridged channel at 940 W RMS for a subwoofer. The crossover is on board, so it works with a factory head unit and with a DSP. Designed in Italy, verified with Audio Precision instruments before it leaves the line.

300W ×2RMS · 4 Ω STEREO

450W ×2RMS · 2 Ω STEREO

940WRMS · 4 Ω BRIDGED

01

Watch it

The MINI amplifiers explained · 68 seconds · with sound · SP Audio showroom

Free shippingDispatched from Italy in 24–48 working hoursWarranty against manufacturing defectsFree technical support from Italy

🔒 Secure checkout · SSL & PCI DSS↩ 14 days to change your mind (EU)✓ Invoice from an Italian company

▶ NOTHING IS DOWNLOADED UNTIL YOU PRESS PLAY

✓ ITALIAN DESIGN✓ AUDIO PRECISION VERIFIED✓ EASY INSTALLATION✓ FREE SUPPORT✓ WOODEN CASE

02

Power measured, not promised

STEREO · 4 Ω

2 × 300 W

STEREO · 2 Ω

2 × 450 W

BRIDGED · 4 Ω

1 × 940 W

RMS @ 14.4 V · ≤ 1% THD+N · CONTINUOUS POWER, NOT PEAK · MINIMUM LOAD 2 Ω STEREO, 4 Ω BRIDGED

03

Why this amplifier

Two channels, or one big one

Stereo onto a pair of speakers, or bridged mono at 940 W RMS onto a 4 ohm subwoofer. One amplifier covers both jobs and you decide at installation, with the bridging guide printed on the terminal panel.

It fits where the others don’t

230 × 112 × 46 mm. Under a seat, behind a side panel, in a false floor: the boot stays usable and the cable runs stay short.

A full crossover on board

High-pass, low-pass or off, both variable from 50 to 250 Hz, plus bass boost from 0 to +12 dB. Door speakers filtered high or a subwoofer filtered low, with no external crossover to buy.

It accepts any source

Input sensitivity 200 mV – 6 V, and it still works from 100 mV. High-output head units and DSP processors drive it without clipping the input; low-level factory sources are covered too.

“Continuous RMS only. No peak, no burst, no marketing watts.”

PROFESSIONAL USER MANUAL · 27 PAGES

Wiring, loads and impedance, filters, gain calibration and the complete specifications.

⇩ Download the manual (PDF)

English · Rev. 1.0 · September 2026 · 3.7 MB

04

Not a box. A case.

Black wood, metal latch, pine inside.

The SP-300.2 MINI arrives in a black wooden case with the SP mark and the tricolour on the lid. A rigid shell during shipping, the safest way to store or carry the amplifier afterwards — and a box people keep.

In the case: amplifier · collector’s wooden case · printed user manual.
Not included: power and speaker cable, inline fuse holder and RCA cable — these are installation materials, chosen to suit your vehicle.

05

Technical specifications

POWER OUTPUT — RMS @ 14.4 V, ≤ 1% THD+N
Stereo 4 ohm	2 × 300 W
Stereo 2 ohm	2 × 450 W
Bridged mono 4 ohm	1 × 940 W
Minimum load, stereo	2 ohm per channel
Minimum load, bridged	4 ohm
AUDIO
Topology	Class D, 2 channels
Frequency response	10 Hz – 50 kHz
Signal-to-noise ratio	≥ 90 dB
Input sensitivity	200 mV – 6 V
Minimum source level	100 mV
Inputs	RCA low level, CH1 / CH2
FILTERS
Filter modes	HPF · LPF · OFF
High-pass filter	50 – 250 Hz, variable
Low-pass filter	50 – 250 Hz, variable
Bass boost	0 – +12 dB, variable
POWER SUPPLY AND PROTECTION
Supply	12 V negative ground, 14.4 V nominal
Remote turn-on	+12 V
On-board fuses	2 × 30 A
Recommended inline fuse	60 A, ≤ 20 cm from the battery
Recommended cable	4 AWG
Protections	Short circuit, thermal, voltage
Indicators	POWER (green) · PROTECT (red)
MECHANICAL AND QUALITY
Dimensions L × W × H	230 × 112 × 46 mm
Mounting points	4
Construction	Aluminium, heat-dissipating fins, rubber bumpers
Terminals	Direct-insert, screw clamp
PCB	2-layer, surface-mount technology
Verification	Audio Precision quality control
Packaging	Collector’s wooden case

MANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED

06

Complete the system

FRONT STAGE · 2-WAY KITSP 6.5 KIT — 180 W RMS REAR FILL · COAXIAL PAIRSP 6.5CX — 150 W RMS RECOMMENDED CABLESP 4GA RED 100% OFC LINE PROTECTIONSP AFS4 4 GA fuse holder

07

Before you install it

Inline main fuse within 20 cm of the battery, 60 A recommended and sized to the cable. The amplifier carries 2 × 30 A on board, but the run from the battery has to be protected too.
Respect the minimum load: 2 ohm per channel in stereo, 4 ohm bridged. A lower impedance trips the protection and, if it happens repeatedly, damages the output stage.
Leave the fins clear. The aluminium fins are the entire cooling system: never cover the amplifier with carpet, luggage or foam.
12 V systems only, negative ground. Professional installation is recommended: damage caused by incorrect installation is not covered by the warranty.

08

What installers ask

Can it drive a subwoofer?Yes, bridged mono: 940 W RMS onto a 4 ohm load. Feed the same signal to both RCA inputs, connect the subwoofer between CH1 (+) and CH2 (−) and set FILTER to LPF.

What speaker impedance can I use?2 ohm minimum per channel in stereo, 4 ohm minimum bridged. Anything lower trips the protection.

What cable and what fuse do I need?4 AWG power and ground, a 60 A inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal.

Does it work with a factory head unit?Yes. Input sensitivity runs from 200 mV to 6 V and it still works from 100 mV, so a low-level factory source is enough. Set the input level with the gain procedure in the manual.

Does it come with a manual?Yes: a printed manual inside the wooden case, plus the 27-page PDF above with the wiring diagrams, the filter settings and the gain calibration.

Free technical support from Italy. Write or call and a person answers, with the real data from the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we help you match it.
spaudio@spaudio.it · +39 340 807 8778

Accepted payment methods
Visa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna

SP Audio — Super Power Audio. Designed in Italy by Audiocar Import & Export SRLS, Milan, official SP Audio distributor for Europe.

spaudio SP-300.2 MINI — 2-CHANNEL CLASS D AMPLIFIER 300W RMS x2