Honeyooi,
You made a wise choice. I run my C1's with an X350 and am very happy. I would go with an Pass Labs X1 preamp instead of the Aleph P and take advantage the Super Symetry circuitry in the X1. I suggest you download Nelson Pass's patent on Super Symetry and read it. Reno Hifi often times has great deals on refurbished X1's and are usually posted for sale here on Audiogon. Best of luck with you X250.5.
You made a wise choice. I run my C1's with an X350 and am very happy. I would go with an Pass Labs X1 preamp instead of the Aleph P and take advantage the Super Symetry circuitry in the X1. I suggest you download Nelson Pass's patent on Super Symetry and read it. Reno Hifi often times has great deals on refurbished X1's and are usually posted for sale here on Audiogon. Best of luck with you X250.5.