I have not heard the H20, but it has a very good reputation among audiophiles.
I am using the Wyred 4 Sound STI-500 (integrated) the basic version is the ST-500 and these amps also use the B&O ICE modules. I'd consider mine dead neutral and musically satisfying. It's done everything I've asked for and then some. The w4s amps definitely mate well with tube preamps as they have a high (for solid-state) 60k input impedance.
I don't know what cables you use, but a very good combination I recently found are the DH Labs Revelation interconnects with the DH Labs Q-10 speaker cables. I think they are very neutral, musical and fast, while also being smooth and musical (not many cables can manage all these qualities at once).
Happy Holidays!
I am using the Wyred 4 Sound STI-500 (integrated) the basic version is the ST-500 and these amps also use the B&O ICE modules. I'd consider mine dead neutral and musically satisfying. It's done everything I've asked for and then some. The w4s amps definitely mate well with tube preamps as they have a high (for solid-state) 60k input impedance.
I don't know what cables you use, but a very good combination I recently found are the DH Labs Revelation interconnects with the DH Labs Q-10 speaker cables. I think they are very neutral, musical and fast, while also being smooth and musical (not many cables can manage all these qualities at once).
Happy Holidays!