First, try DeltaWave software. It is easy to use. If it shows 99.99% or something like that the two files are the same, then look no further - the bass is the same, it's all in your head. But if it shows significant difference... but it won't.
Of course, then you can question if the low cost ADC captured properly...
Do you know what this means? Thanks!
DeltaWave v1.0.61, 2021-02-18T12:19:54.6838371-08:00
Reference: topping_e30_optical_in_e30_minus15.5db_billie_elis_42seconds_right_channel.wav[L] 1852200 samples 44100Hz 16bits, stereo, MD5=00
Comparison: gustard_x16_optical_in_gustard_minus15db_bille_eilish_42seconds_right_channel.wav[L] 1852200 samples 44100Hz 16bits, stereo, MD5=00
Settings:
Gain:True, Remove DC:True
Non-linear Gain EQ:False Non-linear Phase EQ: False
EQ FFT Size:65536, EQ Frequency Cut: 0Hz - 0Hz, EQ Threshold: -160dB
Correct Drift:True, Precision:30, Subsample Align:True
Non-Linear drift Correction:False
Upsample:False, Window:Hann
Spectrum Window:Hann, Spectrum Size:32768
Spectrogram Window:Hann, Spectrogram Size:4096, Spectrogram Steps:2048
Dither:False
Trim Silence:False
Enable Simple Waveform Measurement: False
Discarding Reference: Start=0s, End=0s
Discarding Comparison: Start=0s, End=0s
Initial peak values Reference: -10.999dB Comparison: -11.231dB
Initial RMS values Reference: -25.245dB Comparison: -25.476dB
Null Depth=10.959dB
X-Correlation offset: 798 samples
Drift computation quality, #1: Excellent (1.54μs)
Trimmed 0 samples ( 0.00ms) front, 0 samples ( 0.00ms end)
Final peak values Reference: -10.999dB Comparison: -10.999dB
Final RMS values Reference: -25.243dB Comparison: -25.243dB
Gain= -0.2307dB (0.9738x) DC=0 Phase offset=18.09097ms (797.812 samples)
Difference (rms) = -63.63dB [-66.48dBA]
Correlated Null Depth=63.1dB [57.07dBA]
Clock drift: 0.08 ppm
Files are NOT a bit-perfect match (match=1.82%) at 16 bits
Files match @ 49.9802% when reduced to 10.73 bits
---- Phase difference (full bandwidth): 12.0009273149523°
0-10kHz: 9.14°
0-20kHz: 11.68°
0-24kHz: 12.00°
Timing error (rms jitter): 1.9μs
RMS of the difference of spectra: -109.327530018368dB
DF Metric (step=400ms, overlap=0%):
Median=-42.9dB
Max=-28dB Min=-49.1dB
1% > -49.04dB
10% > -47.25dB
25% > -45.88dB
50% > -42.9dB
75% > -40.61dB
90% > -35.29dB
99% > -10.27dB
PK Metric (step=400ms, overlap=50%):
RMS=-91.5dBFS
Median=-93.5
Max=-84.7
99%: -85.2
75%: -90.71
50%: -93.52
25%: -95.49
1%: -99.37
gn=1.02691066954221, dc=0, dr=7.85006309800256E-08, of=797.8117604836
DONE!
Signature: 0c79b1fb0b0a3302e092eca085067077