up for sale fully upgraded Quad 405
this power amp used on my 3/5a but no longer needed as i move my system to low power S.E tube with full range speaker now
all of the parts has been upgraded , very good amp at this price .
WARRANTY INFORMATION (Private Seller)
The item being advertised is sold "as is", and no warranty should be assumed unless otherwise indicated and agreed between the Buyer and the Seller. Photos representing the item being advertised form part of the description unless otherwise specified.
This content has been generated using AI analysis. While we strive to ensure accuracy and quality, AI-generated material may occasionally contain errors or omissions. All information should be independently verified, and opinions expressed do not necessarily reflect those of the publishers or editors.
This content has been generated using AI analysis. While we strive to ensure accuracy and quality, AI-generated material may occasionally contain errors or omissions. All information should be independently verified, and opinions expressed do not necessarily reflect those of the publishers or editors.
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.
### 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.
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