Infinity Kappa 9 Value & Price History
As of 2026-10-06, a Infinity Kappa 9 has a market value at around $237 (per pair). Based on 950 estimated sales.
Price history
Asking median is roughly flat over the last 59 days ($3,200 → $3,200).
View as table
| Date | Asking | Restored | Sold |
|---|---|---|---|
| 2026-08-08 | $3,200 | — | — |
| 2026-08-26 | $3,200 | — | — |
| 2026-08-30 | $3,200 | — | $240 |
| 2026-09-03 | $3,200 | — | $240 |
| 2026-09-07 | $3,200 | — | $240 |
| 2026-09-11 | $3,200 | — | $239 |
| 2026-09-15 | $3,200 | — | $239 |
| 2026-09-19 | $3,200 | — | $239 |
| 2026-09-23 | $3,200 | — | $237 |
| 2026-09-27 | $3,200 | — | $235 |
| 2026-10-01 | $3,200 | — | $239 |
| 2026-10-05 | $3,200 | — | $237 |
Daily trimmed medians from qualifying eBay listings; days without a fresh sync are not plotted.
Specifications
| Years produced | 1985–1990 |
| Type | Speaker |
| Brand | Infinity |
| Original MSRP | 2,000 (1985) |
| Inflation-adjusted | ~$5,900 today |
| Market value (sold) | $237 |
Parts & supplies
Common maintenance items for the Infinity Kappa 9. eBay links are model-specific searches; Amazon links are for generic supplies that work across most equipment.
- Infinity Kappa 9 surround refoam kit on eBay →
- Infinity Kappa 9 crossover rebuild caps on eBay →
- Infinity Kappa 9 replacement tweeter on eBay →
- Infinity Kappa 9 grilles and badges on eBay →
- Speaker wire — 16awg is standard for most setups on Amazon →
- Banana plugs — cleaner connection than bare wire on Amazon →
- Polyfill acoustic stuffing — reduces internal resonance in sealed and ported cabinets on Amazon →
Purchases through these links may earn StereoWorth a small commission at no extra cost to you. See our affiliate disclosure. Repair budgeting: what vintage stereo repair actually costs.
Comparable models
- Infinity Reference Standard IB $130/pair
- Infinity Kappa 8 $199/pair
- Infinity RS-1B $115/pair
Current listings
Live listing data loads after the next price sync.
Search Infinity Kappa 9 on eBay → Search Infinity Kappa 9 on Reverb →Track this model
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