Thanks for sharing that thread. I believe that either something is wrong with his F6, or it performs very poorly as a USB interface. I have only used it that way once, and not for concert recording. I didn't notice any problems in the short time I tried it.
i hope not! it's mine...
I think he needs to do standalone measurements on the unit for comparison before we can say anything meaningful about his results.
agreed. i'm getting my legs on my measurement game, and have an RME ADI-2 PRO FS-R coming in next week which is truly 'measurement grade' interface on both input and output. ill make a testing thread once i dive deep into it. i certainly have no shortage of different gear to run at this point.
Its unfortunate as i was hoping Amir could do the full suite on the zoom, but his AP tester does DACs better than (non USB) ADCs, as he can feed most of them USB or SPDIF easily then loop back the inputs. A non-USB (or non-decent USB) ADC like the zoom has no clear path back to the AP to do real-time tests... so he's limited to post analyzing wav files in software (which is possible and ive been doing it lately). Is it as good as his $30K AP? For our purposes, possibly
I'd like to ultimately build a database similar to the avisoft recorder test page, which focuses on criteria more relevant to us (no offense birders... most of us arent relying on built-in preamps on our handhelds as our primary rig. Not that that operation isnt relevant but its only one picture. Also the way they present the data is kinda headache inducing for me, personally)
heres what my ideal database fields would look like
mfr
model
release year
inputs (balanced, unbalanced, digital)
ADC chip (if known)
max line-in dBu
max mic-in dBu
minimum mic-in input level setting (where input clipping occurs before 0dBFS AKA "brickwalling"
minimum line-in input level setting (same brickwalling)
S/N, Dynamic range, noise floor, etc., at some arbitrary micinput level like -30dBU or -40dBU
battery life at 2 ch
battery life at max channels
what else relevant are we missing? i can get us a good start. recorders/adcs i have handy
F6
PCM-A10
ICD-UX560
ICD-UX570
R-07
DR2D
DR100mkiii
V3
AD2K
ADC1
ADI-2
ADI-2 PRO FS-R
Brooklyn ADC
the measurements are relatively basic and we could fill it out quickly with some community effort