Upgrade from project tubebox se II

Would the Heed Quaszar be a step up? What would be a good find at about 1,500 used? This is my first analog front so I've never even heard anything else. Here is my current set up...
- project carbon debut ( undated the cart to Ortofon bronze.
- project tubebox se II
-pass labs X0.2 pre
-pass labs X350.5 amp
-Thiel 3.6 rebuilt drivers
- balanced harmonica tech IC's ( cardas rca on the analog side)
-harmonic tech pro 11 speaker cables
Your expert advice is approximated