JL Audio
JL Audio RD900/5
$679.99
Best Car Amplifiers · head-to-head
JL Audio RD900/5 vs Kicker KEY500.1
A sourced, side-by-side comparison. Kicker KEY500.1 is cheaper at $299.99. Every spec and price links to its source.
Kicker
Kicker KEY500.1
$299.99Cheaper
Which is better: the JL Audio RD900/5 or Kicker KEY500.1?
On the specs we track, they're closely matched. The Kicker KEY500.1 is the cheaper at $299.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  JL Audio RD900/5 |  Kicker KEY500.1 |
|---|---|---|
| US price | $679.99 | $299.99 |
| Brand | JL Audio | Kicker |
| Released | — | — |
| Channels | 5 | 1 |
| Amplifier class | Class D | — |
| RMS per channel4 ohm (W) | 70 | 150 |
| RMS per channel2 ohm (W) | 100 | 300 |
| Bridged rms4 ohm (W) | 200 | — |
| Total RMS power (W) | 900 | 500 |
| Snr (dB) | 104 | 90 |
| Thd percent | — | — |
| Frequency response (Hz) | 12-22000 | 10-160 |
| Min impedance ohms | 2 | 1 |
| Fuse rating amps | 80 | — |
Sources — JL Audio RD900/5: jlaudio.com (verified 2026-07-11). Kicker KEY500.1: kicker.com (verified 2026-07-11).
What's the difference between the JL Audio RD900/5 and Kicker KEY500.1?
Where the two actually differ on the specs we track (7 of 11). Matching specs are omitted.
- Channels: JL Audio RD900/5 5 vs Kicker KEY500.1 1
- RMS per channel4 ohm (W): JL Audio RD900/5 70 vs Kicker KEY500.1 150
- RMS per channel2 ohm (W): JL Audio RD900/5 100 vs Kicker KEY500.1 300
- Total RMS power (W): JL Audio RD900/5 900 vs Kicker KEY500.1 500
- Snr (dB): JL Audio RD900/5 104 vs Kicker KEY500.1 90
- Frequency response (Hz): JL Audio RD900/5 12-22000 vs Kicker KEY500.1 10-160
- Min impedance ohms: JL Audio RD900/5 2 vs Kicker KEY500.1 1