Try him at 203-222-2274. As I mentioned, I think the only difference is the different DAC chip, which he feels sounds better. He may talk you out of the change.
Anyone who has a Model 34 that had the transformer upgrade (but not the 2400's chips) will be able to tell you what the 34MXL sounds like.
Anyone who has a Model 34 that had the transformer upgrade (but not the 2400's chips) will be able to tell you what the 34MXL sounds like.