PURE comes standard with a one-year limited warranty against product failures not caused by improper use or installation.

If PURE is sold and installed by an authorized S2i Audio dealer, the warranty is upgraded to three years.

PURE is a Digital System Integrator that replaces the factory amplifier with a superior DSP, bypassing all the lossy and sonically-debilitating factory tuning. A T-harness allows you to capture the analog outputs of the factory amplifier (which is not removed) in order to use a DSP to “de-tune” the factory tuning into a flat input signal.

But this is lossy as it requires conversion back to digital then back to analog, rather than staying in the PURE digital realm from source to amplification. PURE is sonically superior to a T-harness but trickier to implement, which is why most installers choose the T-harness route. We engineered PURE to internalize as much of the “complexity” as possible, to make it even easier to install than a traditional T-harness, so there’s little reason to go the lower-fidelity route if there is a compatible PURE for your car.

PURE does not use a proprietary licensed interface like other digital integrators do, which makes it less expensive overall and also makes development for new vehicles quicker and easier, so long as the technology is supported.

And PURE goes a few steps further than most integrators by internalizing the entire vehicle audio system harness into a “hub” that makes PURE a drop-in device with less required supporting devices to function. Power, analog signal, volume control, speaker wiring, and even electrical to optical digital audio signal conversion all happen within PURE.

PURE not only integrates factory volume control into your DSP, but it optionally enables you to control your subwoofer level via the factory head unit’s bass EQ, if you like (but if you prefer to use a bass knob you still can).

PURE Gen1 and Gen2 vary primarily in how they control main system volume. Both devices ultimately deliver the same goal of factory integration, but use different strategies which may make one Generation more suitable for your needs.

Gen1 controls volume by mimicking your DSP's accessory analog remote control. This requires a compatible DSP with a free remote control input port. In this configuration, it's the DSP that is actually doing the volume control; the PURE is just telling it what level to adjust to. Gen1's architecture allows for use of your DSP's loudness control feature (aka volume-dependent EQ). Gen2 systems cannot do this.

Gen2 controls main system volume directly. The digital music signal is attenuated onboard the Gen2 PURE before it gets sent to the DSP. It therefore does not use or need a DSP remote control port, which frees up said port for an optional DSP accessory remote control to use for mode switching, subwoofer level control, tone controls, fader/balance, etc. This also means DSP compatibility is essentially universal, so long as the DSP brand has signal ducking and digital+analog signal mixing capabilities (necessary for full factory integration on all DSPs, not a PURE requirement).

Gen2 requires more advanced digital circuitry to control system volume internally vs Gen1. This additional parts and assembly complexity raises the cost and MSRP proportionally.

Honda Handsfreelink™ still functions after installing PURE, but as with any aftermarket amplifier installation in a Honda/Acura, you must disconnect the factory ANC (Active Noise Cancellation) Module from the factory wiring harness or your inbound callers will hear an echo when you speak. The ANC module location is vehicle dependent. If you’re not sure where yours is located, contact us for guidance.

If you follow the installation instructions there will be no echo during voice calls!

Yes! You or your installer will need to set up analog “signal ducking”. Currently, Helix and Arc Audio DSPs are known to support this feature effectively. Other DSPs may also be compatible but have not yet been tested by S2i Audio.

Signal Ducking is the DSP’s ability to give analog input signals priority over digital inputs, so that when a navigation prompt occurs, or a phone call is received, the digital source input is attenuated or muted automatically while the analog signal is broadcasting. DSP Signal Ducking capability is a requirement for total factory integration.

See our Compatibility page for the latest information on DSP compatibility

The most convenient location to install PURE is in place of the factory stereo amplifier, as the amplifier will be removed from the circuit entirely anyway. This way you don’t need to extend any factory wiring - you just plug PURE in where the OE amplifier used to.

Your DSP installation location is entirely up to you - under the front seats, in the trunk, etc. Choose a location that has access to harness routing, ample airflow, and is generally a safe location for electronics that get warm and produce a lot of power. The only wiring you will need to “add” is here - we provide a two foot pigtail harness for PURE, because we don’t know where you’ll decide to mount your DSP, and we don’t want to charge you extra for wiring length you may not need.

The “How It Connects” section of our website highlights this nicely, so that’s worth taking a look at, but detailed instructions are provided with PURE as well.
The short of it is, PURE replaces the OE amplifier, which places it electrically between the factory head unit, your DSP and the car’s speakers. All the connections at the PURE are plug-in connectors, and the only wiring you will need to add is between the PURE wiring harness and your DSP.

Included with every PURE Digital Integrator is a two-foot pigtail wiring harness, with each wire individually labeled for easy hook-up to your DSP.
Not included, but required, are the DSP remote control adapter harness which is DSP brand and model-specific and you can only get these from us as they are a custom-assembly. Finally, you will also need a Toslink optical digital audio cable which can be bought off-the-shelf and we also sell these in 6 and 10-ft lengths; make sure to buy the right length for your DSP installation location.

PURE is a very new invention, and the focus on the first generation has been on late-model Hondas due to it being what the owner drives! That said, more applications are being developed as you read this, which you can keep apprised of on the Compatibility section of this site, and our mailing list.

On all Honda vehicles, ANC needs to be disabled if equipped, or you will experience echoes, resonances, and other sonic artifacts that you don’t want. The process is as simple as unplugging the harness that goes into the ANC unit for your car. Fake engine sounds are also produced by the ANC unit so they get disabled too.

Subwoofer: The factory subwoofer wire gauge is too thin for an aftermarket subwoofer system, and since an aftermarket subwoofer is almost certainly going to be installed in the trunk, with the DSP mounted nearby, routing the subwoofer wiring back up to the front of the vehicle (where most factory amplifiers are located) only to run back to the trunk again merely adds electrical resistance. It’s both easier and higher-performance to run your own larger subwoofer wiring.

"Satellite" Speakers: Certain OE speaker locations like the rear hatch of a Civic, roof speakers on an Odyssey or Integra, etc. are very small odd-shaped drivers that are not replaceable with aftermarket speakers due to their size and shape. Also, locations like roof speakers are not typically used in a proper aftermarket setup due to the detrimental effects they can have on stereo imaging.

Yes. The factory Fader, Balance, Treble and Midrange EQs, surround/3D effect, and vehicle speed volume adjustment are not passed through.

Absolutely, we love that! One of the core values of S2i Audio is to go where the customer demand is, and develop products that solve real-world problems in elegant and uncompromising ways. The more we hear from our fan base, the more we can focus R&D in the right areas. Please email us, DM us on Slack or the enthusiast forums where we post. Whatever works best for you.