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The fair market price for a used Quad 405 Power Amplifier in AUD is approximately 550-850 AUD, based on recent global listings for original units in good to very good condition (converted at current exchange rates: ~1 USD=1.52 AUD, 1 GBP=1.95 AUD, 1 EUR=1.66 AUD).
### Typical Price Range
- Lower end (450-650 AUD): Units needing service, basic clones, or partial systems (e.g., €325/~540 AUD, £334/~650 AUD, $252/~383 AUD but outliers ignored for originals).
- Mid-range (650-850 AUD): Working originals in good cosmetic/mechanical condition (e.g., £345/~673 AUD, €495/~820 AUD, $449/~682 AUD).
- Higher end (850+ AUD): Fully serviced/restored, MKII variants, or paired with preamps (e.g., €850/~1,410 AUD restored, $466/~708 AUD excellent).
### Variation by Condition
Prices vary significantly by condition, as these are vintage units (1970s-1990s) prone to capacitor failure and needing recapping (~450-500 AUD service).
- New/Modern clones: 220-500 AUD (e.g., $144-167/~220-254 AUD, $333/~506 AUD bundles on AliExpress/Alibaba); not originals, lower build quality.
- Used - Fair/Poor: 450-650 AUD; untested or worn (e.g., auction starting ~980 AUD but untested).
- Used - Good/Very Good: 650-850 AUD; functional with minor wear, tested.
- Restored/Excellent: 850-1,400+ AUD; upgraded capacitors/OP-amps, like-new performance.
### Key Factors Affecting Value
- Condition and Service History: Electrolytic capacitors degrade over decades; unrestored units risk failure, lowering value by 20-40% vs. recapped.
- Variant: Original Quad 405 vs. 405-2 (MKII, slightly higher demand); clones undervalued.
- Bundles: +20-50% with preamps (e.g., Quad 34/44, FM tuner).
- Location/Market: Europe/UK higher (700-900 AUD equiv.); US lower; shipping adds 50-150 AUD internationally.
- Testing/Provenance: "Pro tested" or "excellent" listings command premiums; untested sold cheaper.
Prices reflect October 2025-March 2026 data; values stable but could rise with hi-fi demand. For Australian sales, check local sites like Gumtree for adjusted pricing.
English (US)