Product overview
The next generation of Alpine S-Series amplifiers are designed to take your car audio experience to the next level without breaking the bank. With a sleek new redesign and upgraded features from their predecessors, these amplifiers offer exceptional performance and power on an affordable budget.
The S-Series S2-A36F 4-channel amplifier delivers 60 Watts RMS @4 Ohms or 90 Watts RMS @2 Ohms of pristine high-fidelity signal to each of your car's front and rear speakers, adding sweet, clear sound to your vehicle.
The amp brings your music to life being Hi-Res Audio certified, with its precise details and emotional power clearly revealed with a frequency response up to 40kHz. For a 3-channel 2-way system, you could also use the amp to drive a pair of front speakers with 60 Watts RMS each, while powering a subwoofer with 180 Watts RMS from the bridged rear channels. A variable mid-bass boost on those rear channels allows you to dial in some extra kick and impact to your system's low-frequency sound. You can even add the optional wired remote RUX-KNOB2 to control the level of the rear channels from your front seat.
High- and low-pass filters put you in command of the frequency spectrum that reaches your speakers and subs. The amp includes preamp- and speaker-level inputs , so you can install it in almost any vehicle, even one with a factory radio. When using the speaker-level inputs, the amp can sense the incoming signal and turn itself on, eliminating the need to run a separate turn-on wire to the receiver or fuse box.
S-Series amplifiers are available in two mono, a 4-channel and a 5-channel configuration.
Entry-level sound just got elevated with the S2-A36F 4-Channel Amplifier. Its sleek redesign houses an Alpine Class-D Amplifier circuit and is now certified for Hi-Res Audio.
The Next-Gen Alpine S-Series S2-A36F 4-Channel Amplifier is Hi-Res Audio Certified and able to reproduce up to 40kHz frequency response. This ultra-wide bandwidth coupled with the elevated S-Series design brings out a new benchmark for entry-level performance and price.
Key features
- Included terminal covers
- Screw terminals (for speaker and power cables)
- Class-D Amplification (Digital)
- Hi-Res Audio Certified
- Side panel controls
- Thermal Management Control
- Top Mounted LED Power/Status Indicator
- Speaker Level Input
- 3 turn-on modes (DC HI, Remote HI, Remote LO)
- Adjustable Gain Control
- Mid-Bass EQ
- Remote Bass Control ( RUX-KNOB2 ) Ready (for channel 3+4 in bridged mode only)
- Mid-Bass EQ (0 to +12dB)
- High Level Input with automatic power on
Technical specifications
| Install | |
|---|---|
| Terminal Layout | Two-sided |
| General | |
| Channel Design | 4/3/2 Channel |
| Crossover | Variable Low-pass Filter (LPF) and High-Pass Filter (HPF), |
| RMS Power Ratings | |
| Per Channel into 2 Ohms, 14.4V (≤1%THD+N) | 4 x 90W |
| Per Channel into 4 Ohms, 14.4V (≤1%THD+N) | 4 x 60W |
| Bridged, 4 Ohms, 14.4V | 2 x 180W |
| Sound Tuning | |
| Crossover | Variable HPF/LPF: 50-400Hz (-12dB/oct ) |
| General | |
| Power Requirements | 14.4 V.DC (9 – 16 V allowable) |
| Input Sensitivity (RCA Input) | Hi: 0.5V – 10V / Low: 0.2V – 4.0V |
| Cable size | Power Cable AWG 4, SPK Cable AWG 8 |
| Frequency Response | 10Hz – 40kHz |
| THD+N (@ 10W into 4 Ohms) | <0.03% |
| Damping Factor | >100 |
| Weight | 2.2kg |
| Dimensions | |
| Heat Sink (WxHxD) mm | 220 x 57 x 210 |
What you are ordering
The exact Alpine model shown above, SKU S2-A36F. Confirm vehicle compatibility for installation kits, interfaces and vehicle-specific systems before checkout.
Product information verified against the official Alpine product page.

