Model value guide
Phase Linear 400 value
Price reference for the Phase Linear 400 power amplifier, including conservative condition ranges, common service concerns, value drivers, and comparable listing research links.
Good working range
$360-$980
Based on a working, original example before location, accessories, or venue-specific payout assumptions.
Condition-adjusted values
Parts or project
Use when major functions are dead, untested, or sold strictly as-is.
$65-$170
Good working
Baseline range for a clean unit with the core functions verified.
$360-$980
Very good serviced
Applies when cosmetics are clean and basic service is documented.
$460-$1,250
Restored collector
Upper reference for documented restoration and strong presentation.
$625-$1,695
Sold-comps summary
Raw power keeps the 400 relevant, but buyers discount unmodified units because failures can damage speakers.
The checker uses conservative reference bands rather than live scraping. Final sale price can still move with location, buyer confidence, shipping risk, and whether service work is documented.
Value drivers
- High power for speaker systems that need current
- Working meters and clean faceplate
- Modern protection board or documented service
Common issues and restoration notes
- Output failure risk without protection updates
- Noisy fan or heat issues on hard use
- Scratched aluminum face
For Phase Linear 400, buyers usually discount undocumented service because output failure risk without protection updates can change repair cost quickly. Keep receipts, note replaced lamps or capacitors, and photograph serial plates, controls, faceplate edges, and included accessories before listing.
Related model pages
More Power Amplifier value references
McIntosh MC240
1960-1969 · Power amplifier
$2,600-$5,600
Transformer health and chrome condition dominate MC240 value; untouched project amps are still valuable but heavily inspected.
McIntosh MC2105
1967-1977 · Power amplifier
$1,700-$3,800
MC2105 comps rise sharply with excellent glass and working meters; cosmetic damage is expensive to correct.
Dynaco Stereo 70
1959-1977 · Power amplifier
$450-$1,200
ST-70 values depend on build quality and transformer health; tasteful rebuilds can outperform untouched but tired units.