Mullardman
Moderately extreme...
May be curious to try out LFD at some future point, but the Sonneteer hasn't put a foot wrong, so no immediate plans.
Obviously a huge number of caveats around this. I don't know what system you have, what sound you are looking for, etc...
But.. it just so happens that my LFD purchase was the result of an (almost) straight fight between LFD and Sonneteer.
I decided to move on from my big valve monos and valve pre. So, I asked the lads at Brady's in Warrington to demo a couple of amps in the £3k region. I did mention I was interested in hearing LFD. They set up for me to hear the LFD Zero MkV and the Sonneteer Orton, through small monitor type speakers, similar to what I have. They chose the Sonneteer because they knew I'd been into valves and it had a rep for a 'valvey' sound.
Frankly, the demo was a bit inconclusive. I liked both, but my initial impression was that the LFD was a little 'small' sounding and the Sonneteer was nice, but not right in some way. On the other hand, the Sonneteer was 'edging it' due to its looks, remote facility etc.
I had to wait a few days for the two amps to become available for home dem, and along the way arranged to home dem a little Sugden too.. from another dealer.
I spent a day, assisted by a fellow geek, swapping the three amps in and out of my system...
The Sugden was nice enough but not really up to driving my speakers, so was the first to be eliminated.
In my system, the Sonneteer was a bit of a puzzle, until the penny dropped. It was 'throwing', a huge soundstage, but one in which it seemed that everything was everywhere. There was no 'pinpoint' stereo imaging.
By contrast, the LFD just got on with it. Clear stereo imaging, depth and a sense of the tonal accuracy and 'presence', which I like, but, crucially, no drama, no 'histrionics', just music. I bought it and paid £100 extra for shiny control knobs, to replace the 'hammerite' finish that was standard. Just a little thing, to alleviate the relentlessly 'utilitarian' looks. I haven't regretted it for a minute.
In fairness the Sonneteer was cheaper, offered arguably better looks, and remote, and was a little less powerful.. but not hugely so, and my speakers aren't that difficult to drive.
My only criticism of the LFD would be its endearingly determined 'cottage industry' personna. There are no graphics whatever on the front panel, apart from the LFD logo. The RCA sockets at the rear, are very close together, which can make plugging and unplugging stuff a little awkward, but beyond that, no complaints and an awful lot to like.
I'd recommend anybody to try LFD.