BAT VK-3i / BAT VK-30 or Herron VTSP-1A pre amp

I would imagine that the Herron would be quite a big step up from the VK-3i in terms of sound quality. Both BATs though offer a remote and are more full featured.

I just upgraded from a BAT VK-3i to a Sonic Frontiers Line 3, which I picked up for a great price from Kevin at Upscale Audio. The Line 3 is quite a bit better than the VK-3i and it's a steal at the price Kevin is selling it for.

Kw6 asked what the Line 3 does better than the Vk-3i. IMHO the Line 3 is better in some very significant ways. It's more dynamic, more refined, and more extended. It throws a huge soundstage and it has greater resolution of low level detail. I'm hearing many things that I hadn't heard before -- and with considerably more realism. I like the ergonomics of the Line 3 a bit better than BAT's. I can change phase and switch to mono using the remote. The
muting function is neat in that it gradually raises the volume when mute is turned off. I do miss the BAT's volume presets though.