LC2i vs LC2i Pro: A Comprehensive Comparison

When upgrading your car audio system, integrating aftermarket amplifiers with a factory head unit can be a challenge. This is where line output converters (LOCs) like the AudioControl LC2i and LC2i Pro come into play. Both devices are popular choices from AudioControl, a brand renowned for its high-quality audio solutions. But which one is right for your setup? In this detailed comparison of the LC2i vs LC2i Pro, we’ll explore their features, differences, benefits, and ideal use cases to help you make an informed decision.

Whether you’re a casual listener looking to add a subwoofer or an audiophile aiming for a full-system upgrade, understanding the nuances between these two devices is key. Let’s dive into the specifics of the LC2i and LC2i Pro, breaking down their design, functionality, and performance to see how they stack up.

What Are Line Output Converters (LOCs)?

Before comparing the LC2i and LC2i Pro, it’s worth understanding what a line output converter does. An LOC is a device that converts high-level speaker signals from a factory stereo into low-level RCA signals that an aftermarket amplifier can use. Modern factory head units often lack RCA outputs, making LOCs essential for integrating amplifiers without replacing the stock stereo.

AudioControl’s LC2i and LC2i Pro are two-channel LOCs designed to deliver clean, powerful signals while addressing common issues like bass roll-off in factory systems. Both are compact, installer-friendly, and packed with features, but they cater to slightly different needs. Let’s explore each one in detail.

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Overview of the AudioControl LC2i

The AudioControl LC2i is a compact, two-channel line output converter designed to simplify the process of adding an amplifier to a factory audio system. Introduced as an affordable yet effective solution, the LC2i has become a go-to choice for car audio enthusiasts who want to enhance their bass without overhauling their entire setup.

Key Features of the LC2i

• Two-Channel Speaker-Level Inputs: Accepts up to 400 watts of input power (20V), making it compatible with most factory systems.
• AccuBASS Technology: Restores bass frequencies that factory stereos often roll off at higher volumes.
• GTO Signal Sense: Automatically turns the device on when it detects an audio signal, eliminating the need for a remote turn-on wire in many cases.
• Fixed RCA Outputs: Provides a clean, low-level signal to your amplifier.
• Compact Design: Measures just 5.4” x 3.25” x 1.5”, making it easy to install in tight spaces.
• Affordable Price Point: Typically retails around $99-$109, offering excellent value.

The LC2i is ideal for users who want a straightforward solution to add a subwoofer or improve bass response in their factory system. Its simplicity and reliability have earned it a strong reputation in the car audio community.

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Overview of the AudioControl LC2i Pro

The LC2i Pro is the upgraded sibling of the LC2i, offering enhanced features and greater flexibility. Launched as an evolution of the original, the LC2i Pro caters to users who demand more control and precision from their audio setup. While it builds on the foundation of the LC2i, it introduces several advanced capabilities that set it apart.

Key Features of the LC2i Pro

• Two-Channel Speaker-Level Inputs: Handles up to 40V (400 watts) of input, matching the LC2i’s capacity.
• AccuBASS with Adjustable Threshold: Offers more precise bass restoration with customizable settings.
• Variable RCA Outputs: Includes separate level controls for each channel, plus a remote bass knob (ACR-1) for real-time adjustments.
• Load Selection Switches: Ensures compatibility with even the most finicky factory systems by adjusting input impedance.
• Multiple Trigger Modes: Supports GTO Signal Sense, audio sense, and remote 12V inputs for versatile installation options.
• Higher Price Point: Retails around $129-$139, reflecting its premium features.

The LC2i Pro is designed for users who want more than just a basic LOC. Its advanced controls and included accessories make it a top pick for complex installations or audiophiles seeking optimal sound quality.

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LC2i vs LC2i Pro: A Side-by-Side Comparison

Now that we’ve covered the basics, let’s compare the LC2i and LC2i Pro across key categories to highlight their differences and similarities.

1. Audio Performance

Both the LC2i and LC2i Pro deliver clean, high-quality signals to your amplifier, but there are subtle differences in how they handle audio.

• LC2i: Features a frequency response of 33 Hz to 100 kHz, with a bass roll-off below 33 Hz at 18 dB/octave. This makes it well-suited for subwoofer applications where ultra-low frequencies (below 30 Hz) aren’t a priority. The AccuBASS feature kicks in automatically to restore bass as the factory system reduces it.
• LC2i Pro: Extends the frequency response down to 20 Hz (with the same 18 dB/octave roll-off), offering better performance for deep bass reproduction. The AccuBASS is adjustable, allowing you to set the threshold and level for more precise bass control.

Winner: LC2i Pro, for its wider frequency range and customizable bass restoration.

2. Adjustability and Control

Control options are where the LC2i Pro truly shines.

• LC2i: Offers fixed RCA outputs with no manual level adjustment. The AccuBASS is preset, so you rely on its automatic functionality.
• LC2i Pro: Provides variable outputs with independent level controls for each channel. It also includes the ACR-1 remote bass knob, letting you adjust subwoofer output from the driver’s seat.

Winner: LC2i Pro, thanks to its superior adjustability and included remote.

3. Installation Flexibility

Ease of installation is crucial for DIY enthusiasts and professional installers alike.

• LC2i: Simple to install with GTO Signal Sense and audio sense trigger modes. However, it lacks load selection switches, which can make it less compatible with some factory systems that require specific impedance matching.
• LC2i Pro: Adds load selection switches (20Ω, 60Ω, or 20kΩ) to ensure compatibility with a broader range of factory head units. It also offers three trigger modes (GTO, audio sense, and remote 12V), providing more installation options.

Winner: LC2i Pro, for its enhanced compatibility and trigger flexibility.

4. Build Quality and Design

Both units are built to AudioControl’s high standards, but there are minor differences.

• LC2i: Compact and lightweight (0.75 lbs), with a sturdy metal chassis. It’s designed for basic setups and doesn’t include a remote knob.
• LC2i Pro: Slightly larger and heavier (still 0.75 lbs), with the same durable construction. The included ACR-1 knob adds convenience and a premium feel.

Winner: Tie—both are well-built, but the LC2i Pro’s accessory gives it a slight edge in perceived value.

5. Price and Value

Budget is often a deciding factor when choosing between these two.

• LC2i: Priced at $99-$109, it’s an affordable option for basic subwoofer integration or small upgrades.
• LC2i Pro: Costs $129-$139, reflecting its advanced features and included remote knob.

Winner: Depends on your needs. The LC2i offers better value for simple setups, while the LC2i Pro justifies its price for more demanding applications.

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Pros and Cons of the LC2i

Pros

• Affordable and budget-friendly.
• Easy to install with GTO Signal Sense.
• Effective AccuBASS for bass restoration.
• Compact size fits in tight spaces.

Cons

• Limited adjustability with fixed outputs.
• No remote bass control.
• Bass rolls off below 33 Hz, which may not suit deep bass enthusiasts.
• Lacks load selection for tricky factory systems.

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Pros and Cons of the LC2i Pro

Pros

• Wider frequency response (down to 20 Hz).
• Adjustable AccuBASS and output levels.
• Includes ACR-1 remote bass knob.
• Load selection switches for broader compatibility.
• Multiple trigger modes for versatile installs.

Cons

• Higher price point.
• Slightly more complex setup due to additional settings.
• May be overkill for basic subwoofer additions.

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Ideal Use Cases: LC2i vs LC2i Pro

When to Choose the LC2i

• You’re adding a single subwoofer to a factory system.
• Budget is a primary concern.
• You don’t need remote bass control or advanced tuning.
• Your factory system doesn’t require load matching.

The LC2i is perfect for straightforward upgrades where simplicity and cost-effectiveness are priorities. It’s a reliable choice for casual listeners who want better bass without breaking the bank.

When to Choose the LC2i Pro

• You’re building a full audio system with multiple amplifiers.
• You want precise control over bass output.
• Your factory stereo has compatibility issues (e.g., low impedance).
• You enjoy tweaking settings for optimal sound quality.

The LC2i Pro suits enthusiasts or professionals who need flexibility and are willing to invest in a premium LOC for a superior audio experience.

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Real-World Performance: What Users Say

To get a fuller picture, let’s consider feedback from car audio forums and reviews:

• LC2i Users: Many praise its ease of use and noticeable bass improvement. One Toyota RAV4 owner on a forum noted, “The bass is there like it’s supposed to be—deeper and wider range compared to a cheap LOC.” However, some wished for more control over output levels.
• LC2i Pro Users: Users love the remote knob and adjustable AccuBASS. A Reddit commenter said, “It’s a great LOC, but AccuBASS can over-excurt subs if not tuned properly—I turned it off and got cleaner lows.” The added features are a hit, though some find the bass knob doesn’t fully mute the sub (down to 5-10% output).

Both devices enjoy strong reputations, but the LC2i Pro’s extras resonate with users seeking customization.

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Installation Tips for LC2i and LC2i Pro

LC2i Installation

1. Connect speaker-level inputs to your factory stereo’s outputs.
2. Attach RCA cables to your amplifier.
3. Power the unit via a 12V source and ground it properly.
4. Test the GTO Signal Sense—adjust if it doesn’t trigger correctly.

LC2i Pro Installation

1. Follow the same initial steps as the LC2i.
2. Set the load selection switches based on your factory system (refer to the manual).
3. Adjust AccuBASS threshold and output levels during tuning.
4. Mount the ACR-1 knob in a convenient location and connect it.

For both, ensure proper grounding to avoid noise, and tune your amplifier gains after installing the LOC.

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LC2i vs LC2i Pro: Which Should You Buy?

Choosing between the LC2i and LC2i Pro boils down to your goals and budget:

• Pick the LC2i if you want a cost-effective, no-frills solution for adding a subwoofer or boosting bass in a basic setup.
• Opt for the LC2i Pro if you’re after advanced control, deeper bass response, and compatibility with complex factory systems.

Both are excellent performers, but the LC2i Pro’s versatility makes it the better long-term investment for serious audio upgrades.

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Conclusion

The AudioControl LC2i and LC2i Pro are standout line output converters that cater to different needs within the car audio world. The LC2i offers simplicity and value, while the LC2i Pro delivers precision and flexibility. By weighing your priorities—whether it’s cost, ease of use, or advanced features—you can confidently choose the right LOC for your system.

Have you used either the LC2i or LC2i Pro? Share your experience in the comments below, or let us know if you need help deciding! For more car audio tips and product comparisons, stay tuned.

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