In a number of physical media collecting circles there seems to be a disdain for CDs issued by record clubs as being inferior. IMHO opinion, digital is digital and I did not think this was possible. But I had been buying CDs from thrift stores recently and ended up with 2 copies of "Singles - 45's and Under" by Squeeze. One was the retail copy, and the other was a record store copy.
Both had a catalog number of CD 3338 and both looked identical in terms of jewel case design, artwork and printing on the CD itself. The club edition was missing the barcode on the back and had some text printed on the CD that it was a BMG club edition.
I ripped both CDs using whipper and then compared the logs. The logs showed different checksums for both CDs and for each individual tracks.
The log showed this for the BMG Club Edition:
Log created by: whipper 0.9.0 (internal logger)
Log creation date: 2020-07-13T14:37:08Z
Ripping phase information:
Drive: HL-DT-STDVDRAM SP80NB80 (revision RC00)
Extraction engine: cdparanoia III 10.2 libcdio 2.1.0 x86_64-pc-linux-gnu
Defeat audio cache: true
Read offset correction: 6
Overread into lead-out: false
Gap detection: cdrdao 1.2.4
CD-R detected: false
CD metadata:
Release:
Artist: Squeeze
Title: "Singles: 45's and Under"
CDDB Disc ID: 940a3d0c
MusicBrainz Disc ID: jtRYczhUTR_9dgFcFDTDz8edCDQ-
MusicBrainz lookup URL: https://musicbrainz.org/cdtoc/attach?toc=1+12+196795+150+12790+26635+41028+55150+74360+87620+105730+124658+136000+153928+181513&tracks=12&id=jtRYczhUTR_9dgFcFDTDz8edCDQ-
MusicBrainz Release URL: https://musicbrainz.org/release/d841a668-b640-4f40-9b10-6cff9c8357cb
TOC:
1:
Start: 00:00:00
Length: 02:48:40
Start sector: 0
End sector: 12639
2:
Start: 02:48:40
Length: 03:04:45
Start sector: 12640
End sector: 26484
3:
Start: 05:53:10
Length: 03:11:68
Start sector: 26485
End sector: 40877
4:
Start: 09:05:03
Length: 03:08:22
Start sector: 40878
End sector: 54999
5:
Start: 12:13:25
Length: 04:16:10
Start sector: 55000
End sector: 74209
6:
Start: 16:29:35
Length: 02:56:60
Start sector: 74210
End sector: 87469
7:
Start: 19:26:20
Length: 04:01:35
Start sector: 87470
End sector: 105579
8:
Start: 23:27:55
Length: 04:12:28
Start sector: 105580
End sector: 124507
9:
Start: 27:40:08
Length: 02:31:17
Start sector: 124508
End sector: 135849
10:
Start: 30:11:25
Length: 03:59:03
Start sector: 135850
End sector: 153777
11:
Start: 34:10:28
Length: 06:07:60
Start sector: 153778
End sector: 181362
12:
Start: 40:18:13
Length: 03:23:57
Start sector: 181363
End sector: 196644
Tracks:
1:
Filename: ./compilation/Squeeze - Singles - 45's and Under/01. Squeeze - Take Me, I'm Yours.flac
Peak level: 0.950867
Pre-emphasis:
Extraction speed: 1.9 X
Extraction quality: 100.00 %
Test CRC: 39B94FC5
Copy CRC: 39B94FC5
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 985D7AF5
Remote CRC: 985D7AF5
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 37681A0A
Remote CRC: 37681A0A
Status: Copy OK
2:
Filename: ./compilation/Squeeze - Singles - 45's and Under/02. Squeeze - Goodbye Girl.flac
Peak level: 0.964508
Pre-emphasis:
Extraction speed: 2.0 X
Extraction quality: 100.00 %
Test CRC: A61756C9
Copy CRC: A61756C9
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: FA8E994E
Remote CRC: FA8E994E
AccurateRip v2:
Result: Found, exact match
Confidence: 12
Local CRC: C66DCC2D
Remote CRC: C66DCC2D
Status: Copy OK
3:
Filename: ./compilation/Squeeze - Singles - 45's and Under/03. Squeeze - Cool for Cats.flac
Peak level: 0.95462
Pre-emphasis:
Extraction speed: 2.1 X
Extraction quality: 100.00 %
Test CRC: 7A04C6A0
Copy CRC: 7A04C6A0
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 2B14DD5E
Remote CRC: 2B14DD5E
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 4961674C
Remote CRC: 4961674C
Status: Copy OK
4:
Filename: ./compilation/Squeeze - Singles - 45's and Under/04. Squeeze - Up the Junction.flac
Peak level: 0.875397
Pre-emphasis:
Extraction speed: 2.4 X
Extraction quality: 100.00 %
Test CRC: 8180D89A
Copy CRC: 8180D89A
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 1411D0FF
Remote CRC: 1411D0FF
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: B7E2ABF1
Remote CRC: B7E2ABF1
Status: Copy OK
5:
Filename: ./compilation/Squeeze - Singles - 45's and Under/05. Squeeze - Slap and Tickle.flac
Peak level: 0.936005
Pre-emphasis:
Extraction speed: 2.5 X
Extraction quality: 100.00 %
Test CRC: '64244E33'
Copy CRC: '64244E33'
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: EE375A39
Remote CRC: EE375A39
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 3309A703
Remote CRC: 3309A703
Status: Copy OK
6:
Filename: ./compilation/Squeeze - Singles - 45's and Under/06. Squeeze - Another Nail in My Heart.flac
Peak level: 0.986603
Pre-emphasis:
Extraction speed: 2.5 X
Extraction quality: 100.00 %
Test CRC: 8301FF51
Copy CRC: 8301FF51
AccurateRip v1:
Result: Found, exact match
Confidence: 7
Local CRC: AAC5AE9E
Remote CRC: AAC5AE9E
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 6D5DC0CF
Remote CRC: 6D5DC0CF
Status: Copy OK
7:
Filename: ./compilation/Squeeze - Singles - 45's and Under/07. Squeeze - Pulling Mussels (From the Shell).flac
Pre-gap length: 00:00:65
Peak level: 0.932312
Pre-emphasis:
Extraction speed: 2.7 X
Extraction quality: 100.00 %
Test CRC: C6CA4E4C
Copy CRC: C6CA4E4C
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 0E3303CD
Remote CRC: 0E3303CD
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 12DE0515
Remote CRC: 12DE0515
Status: Copy OK
8:
Filename: ./compilation/Squeeze - Singles - 45's and Under/08. Squeeze - If I Didn't Love You.flac
Pre-gap length: 00:03:25
Peak level: 0.975098
Pre-emphasis:
Extraction speed: 3.0 X
Extraction quality: 100.00 %
Test CRC: C1AB3459
Copy CRC: C1AB3459
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: A2F3E95D
Remote CRC: A2F3E95D
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 01D79911
Remote CRC: 01D79911
Status: Copy OK
9:
Filename: ./compilation/Squeeze - Singles - 45's and Under/09. Squeeze - Is That Love.flac
Pre-gap length: 00:01:55
Peak level: 0.941681
Pre-emphasis:
Extraction speed: 3.0 X
Extraction quality: 100.00 %
Test CRC: 71F379E6
Copy CRC: 71F379E6
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: DE76FFC5
Remote CRC: DE76FFC5
AccurateRip v2:
Result: Found, exact match
Confidence: 10
Local CRC: B91E6280
Remote CRC: B91E6280
Status: Copy OK
10:
Filename: ./compilation/Squeeze - Singles - 45's and Under/10. Squeeze - Tempted.flac
Peak level: 0.973541
Pre-emphasis:
Extraction speed: 3.1 X
Extraction quality: 100.00 %
Test CRC: 55F8A1CA
Copy CRC: 55F8A1CA
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 5326B87A
Remote CRC: 5326B87A
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: D59811E1
Remote CRC: D59811E1
Status: Copy OK
11:
Filename: ./compilation/Squeeze - Singles - 45's and Under/11. Squeeze - Black Coffee in Bed.flac
Peak level: 0.946136
Pre-emphasis:
Extraction speed: 3.3 X
Extraction quality: 100.00 %
Test CRC: 9699735F
Copy CRC: 9699735F
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 1215A1B3
Remote CRC: 1215A1B3
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: D8DB460F
Remote CRC: D8DB460F
Status: Copy OK
12:
Filename: ./compilation/Squeeze - Singles - 45's and Under/12. Squeeze - Annie Get Your Gun.flac
Peak level: 0.942078
Pre-emphasis:
Extraction speed: 3.5 X
Extraction quality: 100.00 %
Test CRC: 793A6167
Copy CRC: 793A6167
AccurateRip v1:
Result: Found, exact match
Confidence: 8
Local CRC: 82A6B5DF
Remote CRC: 82A6B5DF
AccurateRip v2:
Result: Found, exact match
Confidence: 11
Local CRC: 1AF02522
Remote CRC: 1AF02522
Status: Copy OK
Conclusive status report:
AccurateRip summary: All tracks accurately ripped
Health Status: No errors occurred
EOF: End of status report
SHA-256 hash: 087676AA52512681E1EEC319A5D54DB1C4D8C7A4424C71F05B71BE71C8CCAC49
The log for the retail copy showed this:
Log created by: whipper 0.9.0 (internal logger)
Log creation date: 2020-07-13T13:54:36Z
Ripping phase information:
Drive: HL-DT-STDVDRAM SP80NB80 (revision RC00)
Extraction engine: cdparanoia III 10.2 libcdio 2.1.0 x86_64-pc-linux-gnu
Defeat audio cache: true
Read offset correction: 6
Overread into lead-out: false
Gap detection: cdrdao 1.2.4
CD-R detected: false
CD metadata:
Release:
Artist: Squeeze
Title: "Singles: 45's and Under"
CDDB Disc ID: 940a3e0c
MusicBrainz Disc ID: .uCdWntgyUfayAk_OA8UiG_JhVI-
MusicBrainz lookup URL: https://musicbrainz.org/cdtoc/attach?toc=1+12+196807+150+12795+26640+41032+55150+74365+87632+105742+124670+136005+153927+181517&tracks=12&id=.uCdWntgyUfayAk_OA8UiG_JhVI-
MusicBrainz Release URL: https://musicbrainz.org/release/d841a668-b640-4f40-9b10-6cff9c8357cb
TOC:
1:
Start: 00:00:00
Length: 02:48:45
Start sector: 0
End sector: 12644
2:
Start: 02:48:45
Length: 03:04:45
Start sector: 12645
End sector: 26489
3:
Start: 05:53:15
Length: 03:11:67
Start sector: 26490
End sector: 40881
4:
Start: 09:05:07
Length: 03:08:18
Start sector: 40882
End sector: 54999
5:
Start: 12:13:25
Length: 04:16:15
Start sector: 55000
End sector: 74214
6:
Start: 16:29:40
Length: 02:56:67
Start sector: 74215
End sector: 87481
7:
Start: 19:26:32
Length: 04:01:35
Start sector: 87482
End sector: 105591
8:
Start: 23:27:67
Length: 04:12:28
Start sector: 105592
End sector: 124519
9:
Start: 27:40:20
Length: 02:31:10
Start sector: 124520
End sector: 135854
10:
Start: 30:11:30
Length: 03:58:72
Start sector: 135855
End sector: 153776
11:
Start: 34:10:27
Length: 06:07:65
Start sector: 153777
End sector: 181366
12:
Start: 40:18:17
Length: 03:23:65
Start sector: 181367
End sector: 196656
Tracks:
1:
Filename: ./compilation/Squeeze - Singles - 45's and Under/01. Squeeze - Take Me, I'm Yours.flac
Peak level: 0.935242
Pre-emphasis:
Extraction speed: 2.1 X
Extraction quality: 100.00 %
Test CRC: FF92F46F
Copy CRC: FF92F46F
AccurateRip v1:
Result: Found, exact match
Confidence: 45
Local CRC: 0B8268AF
Remote CRC: 0B8268AF
AccurateRip v2:
Result: Found, exact match
Confidence: 60
Local CRC: '60630037'
Remote CRC: '60630037'
Status: Copy OK
2:
Filename: ./compilation/Squeeze - Singles - 45's and Under/02. Squeeze - Goodbye Girl.flac
Peak level: 0.911987
Pre-emphasis:
Extraction speed: 2.2 X
Extraction quality: 100.00 %
Test CRC: BBEC4F30
Copy CRC: BBEC4F30
AccurateRip v1:
Result: Found, exact match
Confidence: 45
Local CRC: '71074220'
Remote CRC: '71074220'
AccurateRip v2:
Result: Found, exact match
Confidence: 60
Local CRC: 43BC20F8
Remote CRC: 43BC20F8
Status: Copy OK
3:
Filename: ./compilation/Squeeze - Singles - 45's and Under/03. Squeeze - Cool for Cats.flac
Peak level: 0.933228
Pre-emphasis:
Extraction speed: 2.3 X
Extraction quality: 100.00 %
Test CRC: D149E205
Copy CRC: D149E205
AccurateRip v1:
Result: Found, exact match
Confidence: 45
Local CRC: D5FE7289
Remote CRC: D5FE7289
AccurateRip v2:
Result: Found, exact match
Confidence: 61
Local CRC: 3A0CB11B
Remote CRC: 3A0CB11B
Status: Copy OK
4:
Filename: ./compilation/Squeeze - Singles - 45's and Under/04. Squeeze - Up the Junction.flac
Peak level: 0.889832
Pre-emphasis:
Extraction speed: 2.6 X
Extraction quality: 100.00 %
Test CRC: A5881747
Copy CRC: A5881747
AccurateRip v1:
Result: Found, exact match
Confidence: 45
Local CRC: C441D284
Remote CRC: C441D284
AccurateRip v2:
Result: Found, exact match
Confidence: 61
Local CRC: EADBB37A
Remote CRC: EADBB37A
Status: Copy OK
5:
Filename: ./compilation/Squeeze - Singles - 45's and Under/05. Squeeze - Slap and Tickle.flac
Peak level: 0.911987
Pre-emphasis:
Extraction speed: 2.7 X
Extraction quality: 100.00 %
Test CRC: 1284A5BF
Copy CRC: 1284A5BF
AccurateRip v1:
Result: Found, exact match
Confidence: 46
Local CRC: 428758A8
Remote CRC: 428758A8
AccurateRip v2:
Result: Found, exact match
Confidence: 61
Local CRC: 7AA7DA8F
Remote CRC: 7AA7DA8F
Status: Copy OK
6:
Filename: ./compilation/Squeeze - Singles - 45's and Under/06. Squeeze - Another Nail in My Heart.flac
Peak level: 0.955017
Pre-emphasis:
Extraction speed: 2.7 X
Extraction quality: 100.00 %
Test CRC: DA39D112
Copy CRC: DA39D112
AccurateRip v1:
Result: Found, exact match
Confidence: 46
Local CRC: 370FFABA
Remote CRC: 370FFABA
AccurateRip v2:
Result: Found, exact match
Confidence: 60
Local CRC: 2155058E
Remote CRC: 2155058E
Status: Copy OK
7:
Filename: ./compilation/Squeeze - Singles - 45's and Under/07. Squeeze - Pulling Mussels (From the Shell).flac
Pre-gap length: 00:00:65
Peak level: 0.911987
Pre-emphasis:
Extraction speed: 2.9 X
Extraction quality: 100.00 %
Test CRC: 18C19302
Copy CRC: 18C19302
AccurateRip v1:
Result: Found, exact match
Confidence: 46
Local CRC: CE73088A
Remote CRC: CE73088A
AccurateRip v2:
Result: Found, exact match
Confidence: 61
Local CRC: 7C7D8B35
Remote CRC: 7C7D8B35
Status: Copy OK
8:
Filename: ./compilation/Squeeze - Singles - 45's and Under/08. Squeeze - If I Didn't Love You.flac
Pre-gap length: 00:03:25
Peak level: 0.933228
Pre-emphasis:
Extraction speed: 3.2 X
Extraction quality: 100.00 %
Test CRC: 5A45344E
Copy CRC: 5A45344E
AccurateRip v1:
Result: Found, exact match
Confidence: 45
Local CRC: 04FA7544
Remote CRC: 04FA7544
AccurateRip v2:
Result: Found, exact match
Confidence: 61
Local CRC: 869EFF41
Remote CRC: 869EFF41
Status: Copy OK
9:
Filename: ./compilation/Squeeze - Singles - 45's and Under/09. Squeeze - Is That Love.flac
Pre-gap length: 00:01:55
Peak level: 0.933228
Pre-emphasis:
Extraction speed: 3.2 X
Extraction quality: 100.00 %
Test CRC: B54DFC69
Copy CRC: B54DFC69
AccurateRip v1:
Result: Found, exact match
Confidence: 46
Local CRC: 9D9AEEE5
Remote CRC: 9D9AEEE5
AccurateRip v2:
Result: Found, exact match
Confidence: 61
Local CRC: 8DB54A93
Remote CRC: 8DB54A93
Status: Copy OK
10:
Filename: ./compilation/Squeeze - Singles - 45's and Under/10. Squeeze - Tempted.flac
Peak level: 0.933228
Pre-emphasis:
Extraction speed: 3.3 X
Extraction quality: 100.00 %
Test CRC: EF3AFCB6
Copy CRC: EF3AFCB6
AccurateRip v1:
Result: Found, exact match
Confidence: 46
Local CRC: 2D40FB71
Remote CRC: 2D40FB71
AccurateRip v2:
Result: Found, exact match
Confidence: 62
Local CRC: E092BD5F
Remote CRC: E092BD5F
Status: Copy OK
11:
Filename: ./compilation/Squeeze - Singles - 45's and Under/11. Squeeze - Black Coffee in Bed.flac
Peak level: 0.930603
Pre-emphasis:
Extraction speed: 3.5 X
Extraction quality: 100.00 %
Test CRC: C3BE071B
Copy CRC: C3BE071B
AccurateRip v1:
Result: Found, exact match
Confidence: 46
Local CRC: A074CF48
Remote CRC: A074CF48
AccurateRip v2:
Result: Found, exact match
Confidence: 62
Local CRC: 00864660
Remote CRC: 00864660
Status: Copy OK
12:
Filename: ./compilation/Squeeze - Singles - 45's and Under/12. Squeeze - Annie Get Your Gun.flac
Peak level: 0.919464
Pre-emphasis:
Extraction speed: 3.8 X
Extraction quality: 100.00 %
Test CRC: 75B3343F
Copy CRC: 75B3343F
AccurateRip v1:
Result: Found, exact match
Confidence: 45
Local CRC: BB5F8CF0
Remote CRC: BB5F8CF0
AccurateRip v2:
Result: Found, exact match
Confidence: 60
Local CRC: '37658799'
Remote CRC: '37658799'
Status: Copy OK
Conclusive status report:
AccurateRip summary: All tracks accurately ripped
Health Status: No errors occurred
EOF: End of status report
SHA-256 hash: 3318FBA64B56F9D10CA61249ECAD83305259AB2C2A96ABD119C32E6D7E2E2AB5
I also did an SHA256SUM of track 1 and got different values.
For the Club release I got: c5e865cd99cfd90cf52f384bb7e2cf2db5bb60e126d154012ddb65af7bf7feed
For the Retail release I got: bca6343c769f41199543da4011c57abfb2b1dfa3f12274fe42cfa73b44633454
Now obviously, the only thing that matters is the sound. Do the two CDs sound the same on a blind test? I haven't gotten that far yet. Something to tinker with after work.
But I have a few questions. Why would the checksums be different?
If the exact same digital files are used, but different glass masters are produced, one for retail and one for club, would they checksum differently? Would a repress checksum differently from an original pressing?
Just trying to explain the math here.