Help with Modified Audible Illusions Modulus 3

For one thing, all the caps have been changed. Does it work ok? You can send it to Audible Illusions in Florida to have brought back to factory spec. Whoever updated it did a pretty crappy job.

The replacement caps appear to be Russian K40Y9 PIO and Russian green ones whose nomenclature escapes my memory. The NOS Russians are generally good caps, but may or may not be better than the factory originals.

Those are good sounding caps and may well sound better then the originals. But they are not originals.

If the caps that were replaced are shorted or the wrong value it could cause the preamp to be unstable. I am always careful to use the same value parts in any preamp I update. That preamp also has solid state regulators in it and that could also be a problem. Do the tubes light up?