Maybe mjolnir audio has one
How does the sound of the l300 and l700 differ? What about the l300 makes you like it more BenF?
L300 is one the most transparent headphones I ever heard, on par with 009.
It sounds very natural, and has a huuuuuuuuuuuuge soundstage - thanks to its perfect treble, which provides a lot of "brilliance" to the sound, while staying shy of introducing sibilance. It has a perfect timbre (especially in female vocals), and can create an illusion of listening to the actual concert, not a reproduciton of recorded music.
It's only con is the poor bass quantity/quality.
L700 sounds a lot darker, with smaller soundstage, not transparent at all - the sound is colored.
Here are my comparisons of L700 and L300 with L1000 (L300 + L700 pads):
L700 with L700 pads - Warm sounding - tonality is too sweet, small soundstage, excellent bass. Boring sounding.
L1000 is superior in everything but the bass - L700 has thicker bass with better decay
L700 with L500 pads - Soundstage increases (still smaller than L1000), mids are not as warm, more clarity.
Bass quality is degraded to somewhere between L300 and L1000 levels. L1000 is clearly superior in everything
L700 with L300 pads - Sounds much better when the headband is fully opened (with less pressure), especially the bass.
Soundstage increases (equal to L1000), clarity is as good as L1000. Tonality is a bit sweeter than L1000 - I like it, it's perfect (same as L300?).
No warm veil whatsoever.
Bass - surprisingly good, at or slightly below L1000 level .
Comfort - not great, ears are touching the protective layer, especially when the headband is in the closed position (not recommended anyway).
L300 with L300 pads - Amazing soundstage and clarity, largest wow factor.
Bass is underwhelming in both quality and quantity. Too thin with little decay.
L300 with L500 pads - Soundstage is increased over L1000, so is the clarity. Not as warm as L1000.
Bass quality is about as good as L1000