JL Audio
JL Audio RD900/5
$679.99
Best Car Amplifiers · head-to-head
JL Audio RD900/5 vs Alpine S2-A60M
A sourced, side-by-side comparison. Alpine S2-A60M is cheaper at $299.95. Every spec and price links to its source.
Alpine
Alpine S2-A60M
$299.95Cheaper
Which is better: the JL Audio RD900/5 or Alpine S2-A60M?
On the specs we track, they're closely matched. The Alpine S2-A60M is the cheaper at $299.95.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  JL Audio RD900/5 |  Alpine S2-A60M |
|---|---|---|
| US price | $679.99 | $299.95 |
| Brand | JL Audio | Alpine |
| Released | — | — |
| 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 | — |
Sources — JL Audio RD900/5: jlaudio.com (verified 2026-07-11). Alpine S2-A60M: alpine-usa.com (verified 2026-07-11).
What's the difference between the JL Audio RD900/5 and Alpine S2-A60M?
Where the two actually differ on the specs we track (7 of 11). Matching specs are omitted.
- 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