Marantz PM-KI Ruby Value & Price History
As of 2026-11-05, a Marantz PM-KI Ruby has a market value at around $400. Based on 280 estimated sales.
Price history
Asking median is up 85% over the last 90 days ($1,399 → $2,595).
View as table
| Date | Asking | Restored | Sold |
|---|---|---|---|
| 2026-08-08 | $1,399 | — | — |
| 2026-09-03 | — | — | $360 |
| 2026-09-09 | — | — | $360 |
| 2026-09-15 | — | — | $360 |
| 2026-09-21 | — | — | $360 |
| 2026-09-27 | — | — | $360 |
| 2026-10-03 | — | — | $367 |
| 2026-10-09 | — | — | $392 |
| 2026-10-15 | — | — | $400 |
| 2026-10-21 | — | — | $400 |
| 2026-10-29 | $2,595 | — | $400 |
| 2026-11-04 | — | — | $399 |
| 2026-11-05 | — | — | $400 |
Daily trimmed medians from qualifying eBay listings; days without a fresh sync are not plotted.
Specifications
| Years produced | 2018–2026 |
| Power output | 100 wpc (8 ohms) |
| Type | Amplifier |
| Brand | Marantz |
| Original MSRP | 2,000 (2018) |
| Inflation-adjusted | ~$2,550 today |
| Market value (sold) | $400 |
Buying notes
Ken Ishiwata signature edition Marantz. Limited production and the KI signature adds collector value over the standard PM version. Check both channels at matched volume and verify phono stage function. Good build quality; KI editions hold value well.
Parts & supplies
Common maintenance items for the Marantz PM-KI Ruby. eBay links are model-specific searches; Amazon links are for generic supplies that work across most equipment.
- Marantz PM-KI Ruby capacitor recap kit on eBay →
- Marantz PM-KI Ruby replacement knobs on eBay →
- Fuses for the Marantz PM-KI Ruby on eBay →
- DeoxIT D5 — cleans oxidized contacts, quiets scratchy pots on Amazon →
- Multimeter — check DC offset before connecting speakers on Amazon →
- Speaker wire 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
- Marantz Model 30 $1,600
- Marantz 8B $845
- Marantz PM8006 $475
Current listings
Live listing data loads after the next price sync.
Search Marantz PM-KI Ruby on eBay → Search Marantz PM-KI Ruby on Reverb →Track this model
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