

Side-by-side comparison of 978 Down4Sound products and 22 Knu Koncepts products across 10 categories.
| Category | Down4Sound | Knu Koncepts |
|---|---|---|
| Speakers | 553 products $25 – $300 | 13 products $1 – $225 |
| Amplifiers | 186 products $80 – $1,260 | 1 products $24 – $24 |
| Wiring | 109 products $1 – $300 | 3 products $29 – $67 |
| Subwoofers | 66 products $85 – $2,277 | 4 products $8 – $27 |
| Batteries | 21 products | — |
| Accessories | 15 products $15 – $272 | 1 products $8 – $8 |
| Alternators | 13 products $350 – $599 | — |
| Sound Deadening | 10 products $110 – $230 | — |
| DSP / Processors | 4 products $30 – $120 | — |
| Enclosures | 1 products $759 – $759 | — |