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BBC AM7/13 The six preamps are Hi-gain discrete units with original BBC audio transformers
PSU has NOT been powered up - This is deliberate, Vintage capacitors
2u BBC rack chassis PSU in locations 7 and 8 (NOT original location)
Some black plastic location rails may be missing or damaged
Six preamps in locations 1 to 6 ARE in original location see AM7/13 text at each location each module is keyed the rear has a male/female cut out key system as the locations can be wired for different modules.