soLicitous
Head-Fier
Just got my Fulla 2 a couple hours ago, pleasantly surprised by the quality both sonically and physically. No, my volume pot isn't perfectly centered like many others. My MicroUSB plugs are also slightly tight, but not worried about it in the least.
Impressions:
Coming from standard MacBook Pro output for my Campfire Jupiters to the Fulla 2. I hate using night and day terms with audio as a lot of it is about small incremental improvements in quality that may not even be initially realized. With that being said, the improvement is something I would place well beyond $100. Instrument separation and depth is the first element I noticed when using the Fulla 2. Bass is much more controlled and and has a little more impact. Highs have an added clarity and air that was missing previously. Coherency is also a word I would use without hesitation as the music sounds a lot more, well, musical. Mids were slightly recessed through the standard MacBook Pro output but sound more even throughout the range with the Fulla 2. With the volume all the way down, I hear pretty much no hiss at all, I say this because I don't hear any, ymmv through as I'm not very sensitive to hiss (Jupiter is 32 Ohms I believe). Volume pot is barely turned at all but allows for significantly more selection. For example, through my MacBook Pro, 4 on the volume was slightly too quiet and 5 too loud, Fulla cures this by allowing you to move the pot to exactly where you want.
I received my Fulla 2 last night (a day early!) and wanted to echo most of this post. The volume knob on the unit I received is centered, level, and all of the case screws are in perfect shape.
I've only operated my Fulla 2 in DAC/Amp mode as I don't have the appropriate connectors to test it in standalone DAC or standalone Amp mode at this time.
As far as audio impressions:
Basically the difference between the Fulla 2 and my previous sources (Google Pixel, self-built desktop PC, and HP Spectre x360 laptop) was night and day. The entire range is more present and controlled. Considering this is my first dedicated DAC/Amp I wasn't sure what to expect. I am fairly stunned that this $100 piece could provide so much of an improvement to my music.
With that being said, not everything is perfect:
I get an intermittent audible scratching when turning the volume knob while not playing music. I don't hear it when changing the volume while music is playing, so it may not exist when doing so. Perhaps someone with more experience and knowledge could chime in! There also appears to be a stereo imbalance at very low sound levels when using my IEMs (26 ohm resistance). The sound levels are well below what I listen at, so again this doesn't bother me. If you prefer your music played at a whisper and own really sensitive headphones, this may be of interest.