# JL Audio RD900/5 vs Alpine S2-A60M: specs and price compared

A sourced, side-by-side comparison of the JL Audio RD900/5 (JL Audio) and Alpine S2-A60M (Alpine) among car amplifiers. Alpine S2-A60M is the cheaper of the two at $299.95.

## Side by side

| Spec | JL Audio RD900/5 | Alpine S2-A60M |
| --- | --- | --- |
| US price | $679.99 | $299.95 |
| Brand | JL Audio | Alpine |
| Channels | 5 | 1 |
| Amplifier class | Class D | Class D |
| Rms per channel4 ohm (W) | 70 | 330 |
| Rms per channel2 ohm (W) | 100 | 600 |
| Bridged rms4 ohm (W) | 200 | — |
| Total rms power (W) | 900 | 600 |
| Snr (dB) | 104 | 85 |
| Thd percent | — | 0.1 |
| Frequency response (Hz) | 12-22000 | 10-400 |
| Min impedance ohms | 2 | 1 |
| Fuse rating amps | 80 | — |

## Key differences

- Channels: JL Audio RD900/5 5 vs Alpine S2-A60M 1
- Rms per channel4 ohm (W): JL Audio RD900/5 70 vs Alpine S2-A60M 330
- Rms per channel2 ohm (W): JL Audio RD900/5 100 vs Alpine S2-A60M 600
- Total rms power (W): JL Audio RD900/5 900 vs Alpine S2-A60M 600
- Snr (dB): JL Audio RD900/5 104 vs Alpine S2-A60M 85
- Frequency response (Hz): JL Audio RD900/5 12-22000 vs Alpine S2-A60M 10-400
- Min impedance ohms: JL Audio RD900/5 2 vs Alpine S2-A60M 1

## Sources

- JL Audio RD900/5: https://www.jlaudio.com/products/rd900-5-car-audio-rd-amplifiers-98642 (jlaudio.com, verified 2026-07-11)
- Alpine S2-A60M: https://www.alpine-usa.com/product/s-series-amplifier-s2a60m (alpine-usa.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/car-amplifiers/jl-audio-rd900-5-vs-alpine-s2-a60m/
Cite: Per The Front Desk Review, JL Audio RD900/5 ($679.99) vs Alpine S2-A60M ($299.95) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/car-amplifiers/jl-audio-rd900-5-vs-alpine-s2-a60m/
License: CC BY 4.0.