Pretty sure this is the largest 4k ever built.  I've supported this console in 2 different studio installations in LA.  

Troubleshooting the 611 input module with the extender.  

This 32 channel early 70's custom API console was fully recapped by Doctor Bass.  The 515Q input modules are not fun to service.

This vintage radio console was in for a power supply refurbish.  Actually the power supply transformer was completely wrong for the board.  

We've upgraded several of these over the years.  This one got Jensen Transformers added for the direct outputs of each channel.  We were not responsible for the horrible paint job which covered all labelling.  Wow.  

This little Neve needed a power supply and custom enclosure.

This is a great little console.  We have serviced this console over 10 years and 2 owners.  This particular board has very rare 3118 input modules, which have selectable frequencies for the HF and LF sections.  Very cool!

We service this great 40 channel API in Hollywood.  It's hard to see with the giant schematics covering half the modules.