L1TA531 - 54 mm² to 20 mm² Input Reducer Adapter

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Offer not valid on MTX Audio, Alpine, Focal, Pioneer, Kenwood, Dynavin, JVC and JBL products.

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• 🟢 In stock: product available in our warehouse, ready to be shipped.
• 🟠 Pre-order – X business days: average time to receive the product in our warehouse before it is shipped to you.

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🚚 Free delivery on orders over €49 with Chronopost Économique to a pickup point (estimated delivery time of 4 to 10 business days).

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Other faster delivery methods are also available depending on the products and your delivery address.

📦 Preparation and shipping

In-stock products ordered before 12 p.m. are generally shipped the same day. After 12 p.m., shipping generally takes place on the next business day.

Pickups are available Monday through Friday, excluding holidays.

🚚 Our delivery methods

• Chronopost Économique pickup point: free delivery with purchases of €49 or more (4 to 10 business days).
• Chronopost 24h pickup point: fast delivery to a pickup point.
• 24h home delivery: our only home delivery option. Please note that this delivery method is not considered a guaranteed express delivery.

Delivery times begin once the carrier has accepted the package and are provided as estimates in business days.

Important: check that your product is listed as "In stock" on its product page. For pre-orders, shipping takes place only after the product has been received at our warehouse.

Some heavy or bulky packages may incur additional shipping and handling fees, which are automatically displayed in your cart.

⚠️ Receiving your package

Check the condition of your package before accepting it. In the event of damage, make specific reservations with the carrier or refuse the package if necessary.

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The Sound Auto Concept Team

Highlights

• 54 mm² (0 AWG) to 20 mm² (4 AWG) input reducer
• Made from 100% brass for optimal conductivity and durability
• Red and black grommets included for quick polarity identification
• Protective anti-corrosion plating
• Crimp-free installation — direct cable insertion, screw tightening
• Laser-engraved Auto-Connect logo

Description

The L1TA531 is an input reducer adapter designed to connect large gauge power cables (54 mm² / 0 AWG) to a smaller input terminal (20 mm² / 4 AWG). Ideal for high-power amplifiers where the input does not match the required cable gauge, it helps maintain optimal current flow and prevent voltage drops that degrade audio performance.

• Direct connection without additional terminals
• Prevents voltage drops in the audio installation
• Allows the amplifier to operate at full power without loss
• Compact and neat design with laser engraving

Technical specifications

Why choose it?

• Simple and quick solution for adapting cable gauge to your amp's input
• Solid brass for maximum conductivity and long lifespan
• No crimping necessary — saves installation time
• Prevents voltage drops and protects your audio equipment
• Available from Sound Auto Concept, your car audio specialist.