AudioControl LC2i PRO Review: Specifications, Installation and Comparisons
Quick summary: the buying decision
The LC2i PRO is AudioControl's two-channel active line output converter: it takes speaker-level signals (up to 40 V) from a factory head unit or factory amplifier and turns them into clean preamp signals for aftermarket amplifiers. Selectable input loads help with factory systems that mute or distort when the factory speakers are disconnected.
AudioControl LC2i PRO: what it is
The AudioControl LC2i PRO is a 2-channel active line output converter with AccuBASS and an included ACR-1 dash remote. It takes the best possible signal from a factory sound system to your amplifiers, with selectable input loads for even the most finicky systems.
It has fixed and variable outputs with discrete level controls, two main channels and two bass channels, so one unit can feed both a speaker amplifier and a subwoofer amplifier. AccuBASS corrects factory bass roll-off, and an ACR-1 dash remote is included.
Key features
Two channels of active speaker-level inputs, handling up to 40 V
Fixed and variable outputs with discrete level controls: 2 main channels and 2 bass channels
Patented AccuBASS processing corrects factory bass roll-off; ACR-1 dash remote included
Load selection switch, ground isolation switch and GTO signal sensing
Turn-on by GTO signal sense (DC offset), audio sense or 12 V remote input; 12 V remote output
Specifications explained
The speaker-level input handles up to 40 V RMS / 400 W (20 kohm setting), with a selectable input impedance of 20 ohm, 60 ohm or 20 kohm. Output is up to 9.5 V RMS / 13 V peak with ±12 dB of output gain and a 150 ohm output impedance.
AudioControl quotes 0.01% THD, a signal-to-noise ratio of more than 110 dB and a 20 Hz – 50 kHz (±1 dB) frequency response. The unit draws 200 mA and AudioControl recommends a 1 A fuse.
Full specifications as published by AudioControl:
Model: LC2i PRO
Type: 2-channel line output converter with AccuBASS
Speaker-level input: 1 (2 channels), up to 40 V RMS / 400 W (20 kohm setting)
Input impedance: 20 ohm, 60 ohm or 20 kohm (selectable)
Preamp outputs: 2 (2 channels main, 2 channels bass)
Maximum output level: 9.5 V RMS / 13 V peak
Output gain: ±12 dB
Output impedance: 150 ohm
Total harmonic distortion: 0.01%
Signal-to-noise ratio: More than 110 dB
Frequency response: 20 Hz – 50 kHz (±1 dB)
Turn-on modes: Remote in, GTO signal sense, audio sense; 12 V remote out
Current draw: 200 mA
Recommended fuse: 1 A
Dimensions (L x D x H): 6.9 x 3 x 1 in, including speaker connectors
Weight: 0.34 kg (0.75 lb)
In the box: LC2i PRO, ACR-1 remote, 20 ft phone cable, speaker and power connectors, manual, warranty card
Choosing the input load setting
Some factory amplifiers expect to see a speaker-like load and will mute, distort or shut down without one. The 20-ohm and 60-ohm settings present that load, while the 20-kohm setting presents a high impedance that suits most head-unit outputs. If you are unsure, start by identifying whether the car has a separate factory amplifier, and test the setting with the system at low volume before setting gains.
Levels, turn-on and noise
Because the LC2i PRO can output up to 9.5 V RMS / 13 V peak, the amplifier gains can usually be set low, which keeps noise down. Turn-on can come from a 12 V remote input, GTO signal sensing (DC offset) or audio sensing, and a 12 V remote output switches on the amplifiers. The ground isolation switch helps if you hear alternator whine or ground-loop noise.
Mount the converter close to where you tap the factory signal, keep the speaker-level wiring short, and run RCA cables away from power cables. The unit measures 6.9 x 3 x 1 in, including speaker connectors.
AccuBASS and the bass outputs
Many factory systems reduce bass as the volume rises to protect small factory speakers. AccuBASS compensates for that roll-off, and the separate bass outputs with their own level control (plus the included ACR-1 dash remote) make it easy to set a subwoofer level that stays consistent.
How it compares
AudioControl line output converters at VA3 Car Studio:
AudioControl LC1i: 2-channel line output converter and line driver, output gain ±12 dB, ₹16,990
AudioControl LC7i PRO: 6-channel line output converter with AccuBASS, output gain ±15 dB, ₹42,490
If you also want full DSP, AudioControl's DM-810 and the D-series amplifiers accept speaker-level inputs directly, so a separate converter is not needed.
Price and value in India
At the time of writing (October 2026), VA3 Car Studio lists the LC2i PRO at ₹25,490, 15% below the MRP of ₹29,990. A converter like this is usually the least expensive way to add aftermarket amplifiers while keeping the factory head unit. Prices can change, so the product page always shows the current price.
Verdict: who should shortlist the LC2i PRO
The LC2i PRO is the practical choice for adding a subwoofer amplifier (and a speaker amplifier) to a factory system, thanks to AccuBASS, the bass outputs and the included dash remote.
Real-world reviews and limitations
We have not yet published a VA3 installation report for the LC2i PRO. The figures in this review are AudioControl's published specifications, not our own measurements, and real-world results depend on the installation, the wiring and the tune. If you have used one, we would welcome your feedback.
Frequently asked questions
What does the LC2i PRO do?
It converts speaker-level signals (up to 40 V) from a factory system into preamp (RCA) signals for aftermarket amplifiers.
Which input load setting should I use on the LC2i PRO?
Use 20 ohm or 60 ohm when a factory amplifier needs to see a load to avoid muting or distortion, and 20 kohm for most head-unit outputs.
How does the LC2i PRO turn on?
From a 12 V remote input, GTO signal sensing (DC offset) or audio sensing; a 12 V remote output switches on the amplifiers.
Does the LC2i PRO include AccuBASS?
Yes, with an ACR-1 dash remote included.
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