RARE Vintage ART Power Plant Guitar Rack Preamp Blackface EX Condition

Focusrite Platinum OctoPre 8 Channel Mic Preamp Rack Unit Tested

NICE Warm Audio WA273 Two Channel British Mic Preamp

ART Dual MP - Two Channel Tube Microphone Preamp Model 254 (TESTED-WORKING)

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Warm Audio WA73-EQ 1 Channel British Mic Pre & EQ

ART SOLO MPA Multi-Voice Tube Preamp

Heritage Audio HA-73 Elite Single Channel Mic Pre