Which one should I buy first?

Buy the iLX-507 first if your current radio has no CarPlay or Android Auto. Buy the speaker bundle first if your radio is fine but the sound is thin and distorted at volume.

They work well together. The iLX-507 feeds the S2-A36F amp, which drives the S2-S65C fronts and S2-S69 rears. That is a full system, not a choice between the two.

Which is better for sound quality?

The speaker and amp bundle changes sound quality far more. The iLX-507's 18W RMS x 4 built-in amp is weaker than the S2-A36F's 60W RMS x 4 at 4 ohms.

Does the iLX-507 work with the S2-A36F amp?

Yes. The receiver has RCA preamp outputs to feed the S2-A36F, which then powers the S2-S65C and S2-S69 speakers.

Will the iLX-507 fit my car?

It is a double-DIN unit, so it fits dashes with a double-DIN opening. Many vehicles need a dash kit and a Maestro module, which are sold separately.

Neither has a clear edge. Speakers and amps are passive hardware with few failure points; a receiver has a touchscreen and software that age faster. Alpine supports both lines with standard warranties.

Alpine S2-S65C 6.5" Component Set S2-S69 6x9" Coaxial Speaker S2-A36F Amplifier vs Alpine iLX-507 7" HD Digital Multimedia Receiver

These are not competing products. Product A is a speaker and amplifier bundle that upgrades the sound coming out of your existing radio. Product B is a 7-inch multimedia receiver that replaces the radio itself. Buy A if your dash unit is fine but the speakers are weak. Buy B if you need CarPlay, Android Auto and a modern screen. No prices were provided for either, so compare current store prices on each product page before deciding.

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