Z Review - Phase Linear Series-400 Amplifier (That's Vintage Baby!) - YouTube
stereonomono - Hi Fi Compendium - 13 years on-line: Phase Linear Model 400
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Phase Linear 400 Series II 1978 Black / Silver | Reverb
Phase Linear 400 2 | George Meyer AV
Bypass caps – PS Audio
Phase Linear 400 | Reverb
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Phase Linear 400 Re-work — Polk Audio Forum
File:Phase Linear 400 series ii (9300554717).jpg - Wikimedia Commons
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Vintage Audio Exchange
Phase Linear Model 400 Series II, Audio Standard Amplifier - SOLD – Holt Hill Audio
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Phase Linear 400 Power Amplifier and Phase Linear 4000 Audio Control Console | eBay
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Phase Linear 400 Mod
