I own the XA30.5. When I was last auditioning amps, I was originally looking at 300-watt amps. I had previously owned Class D 1000-watt monoblocks. After auditioning several well-known and respected AB amps at various dealers, I stopped at the Pass dealer thinking I would audition the X350.5. After talking to the dealer, he suggested I listen to the XA30.5. I was skeptical that 30 watts could run my speakers (Dynaudio Confidence C2 Mk II), but he assured me it would not be a problem. Well, after listening to the XA30.5, I was floored by how good it sounded compared to some very good amps that I had just auditioned at another dealer. I would describe the sound as lush, full, musical. Sound staging is
excellent. I really love the amp and have not missed the extra watts (meter never leaves Class A), though I do not listen to rock at high levels (mostly Jazz). I suggest you audition the Pass.