If you wait for the 25th Anniversary version of the CSP3 that will be built to match the SE84UFO25 amplifier that will be made without the headphone circuit altogether. . . . That should appear soon as Steve has reported he's finalizing the prototype.

Alternately if you can handle or prefer a white topped Decware component, the CSP2+ had the headphone jack way at the rear of the component on the right side of the transformer, hardly visible. The CSP2+ is a very good headphone, I've had three of them in use at once in one version of my main system, and I really enjoyed their sound and flexibility.

Just an aside: If such an item interests you I have two I could sell (one listed with the stock caps, another with the beeswax caps I have not listed yet). I used both a lot but never for headphones, and there are issues with the headphone use now, but that is the only issue.