In 2018 Jeff Knudsen donated his 5000+ cassette tape collection to www.shnflac.net.
The ensuing GEMS Lossless Legs production is releasing each of these tapes as raw transfers in digital format, one file per cassette side.

Transfer info: Nakamichi CR-7A -> Sound Devices MixPre-3M
Transfer by: Jay Haines
Date on label: April 1, 1984

Here's what deadlists.com says occurred on this date and the sources in circulation at the time of this seed.
This release may or may not be one of these sources.
This entry is included as an aid to future researchers.
As always, listen, look at the pictures and judge for yourself.

Band 	Grateful Dead
Venue 	Marin Veterans Memorial Auditorium
Location 	San Rafael, CA
Date 	4/1/84 - Sunday 	posters 	tickets, passes & laminates
One 	Jack Straw [5:48] ;
Friend Of The Devil [8:30] ;
Me And My Uncle [3:14] >
Mexicali Blues [4:51] ;
Big Railroad Blues [5:33] ;
Cassidy [5:15] ;
Tennessee Jed [#7:33] ;
My Brother Esau [4:30] >
Don't Ease Me In [3:12]
Two 	Help On The Way [3:12] >
Slipknot! [5:29] >
Franklin's Tower [11:27] >
Samson And Delilah [7:32] ;
Terrapin Station [12:18] >
Drums [4:37#] >
Space [4:48] >
Morning Dew [12:19] ;
I Need A Miracle [3:18] >
Goin' Down The Road Feeling Bad [7:29] >
Good Lovin' [8:27]
Encore 	Touch Of Grey [6:35]
Comments
Recordings
Master recording source(s): Cass Master
Download/Listen Sources

    source: 2 Beyer M160 & 1 Sennheiser 421 microphon
    2 Beyer M160s + 1 Senn. 421>D5>MC>CDR>EAC>FLAC
    (FOB) Sony ECM-220T -> Cassette Master (Sony TC-D
    Nakamichi CM304's>Sony D5M>Sony D5M Location: At
    Analog Soundboard->Pioneer PDR-509->CDRW->Audio C
    SBD -> Cassette Master (Sony D5) -> Cassette (Son
    SBD -> Cassette Master -> Cassette (Maxell XLIIS-
    Sony ECM-939LT stereo mics (x2) > Marantz PMD-340
    Soundboard

Contributors 	(Gordon Sharpless)
Caretaker 	Barry Barnes

********** The GEMS Knudsen Tape Project  **********

In 2018, Jeff Knudsen bestowed his tape collection to the AZ GEMS
team for distribution and archiving. We have cherry picked some shows
and released them but have only scratched the surface. The process
of producing a complete and accurate mastered file set is time consuming:
select the show, compare to existing sources, adjust the tape deck,
transfer to digital, speed correct, master, aquire the source ID and
torrent. We realized we would never release most of collection using this
method.

As long as music is on tapes in a closet, it is useless. If it circulates
it is preserved for others and for the future. Rather than go through
the whole file set creation process, we transfer each tape or tape
side as a single digital file. A two tape concert consists either two big
audio files, 1 for each tape or 4 big audio files, one for each side of
the two cassettes.  We transfer professionally using the best gear and
a high quality Analog to Digital device. The Azimuth and Dolby settings
are correct. We release these files for everyone. We do not evaluate
the quality of the source, master it, or track it.

The Knudsen Tape Project is about sharing the tapes.

In each numbered release, along with the digital music files, we
include a photo of the tapes. The goal is to release as many of the
tapes as possible to the website www.shnflac.net.

We think the fruits of this project will become more interesting as time
passes. We believe that access to raw, properly transferred audio will
be of value to both present and future listeners, researchers and others.
Audio mastering technology is moving at breakneck speed. We can only imagine
the future technology that will be available. Having access to unmastered sources
could be invaluable.

HISTORY

The collection was started with a box of tapes Jeff Knudsen recieved
from his friend Dick Latvala in the late 70's. Dick was just a regular
guy in Pahoa, Hawaii and had not yet begun officially working with the
Greatful Dead. Over time, Jeff's collection grew. At that time, tapes were
currency and Jeff had gold. His collection increased to about 5000 coveted
tapes, via mail trades and all night copy-athons. Jeff shared them freely
and widely. If you had a soundboard tape in your collection years ago there
is a good chance it came from Jeff Knudsen.

WHAT CAN I DO WITH IT ?

Every release in this project is from a band that allows it's fans
to trade music non-commercially. We neither add or take away from that
permission. We only ask that you credit the Knudsen Tape Project if you
use the material. We ask nothing else of you and you do not need
to ask permission to use them. Since we ask only for source credit, we would
rather not hear complaints. Take what you need and leave the rest.

LINEAGE QUESTIONS

The notion of documenting lineage is a modern one, or simply one Jeff
did not entertain. We do not have lineage information on most of these
tapes. Any information we have will be in the photo of the tapes.
Some of the tapes sound absolutely fantastic. Others may remind
you of a tape you had long ago.

Now the rest is up to the community, with whom we have absolute faith
in the ability to discern.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Contact shnflac@gmail.com if you need more information.


SHNTOOL OUTPUT
    length     expanded size    cdr  WAVE problems  fmt   ratio  filename
    43:59.518     760181336 B   cxx   --   ---xx   flac  0.6167  gd1984-04-01-1A.flac
    47:30.407     820917302 B   cxx   --   ---xx   flac  0.6902  gd1984-04-01-1B.flac
    47:00.356     812262470 B   cxx   --   ---xx   flac  0.6477  gd1984-04-01-2A.flac
    47:22.727     818705486 B   cxx   --   ---xx   flac  0.6437  gd1984-04-01-2B.flac
   185:53.008    3212066594 B                            0.6502  (4 files)

gd1984-04-01-1A.flac:8ed8fb8464f75407ee1820bae6f4368c
gd1984-04-01-1B.flac:3f10786f72fb0fb675c7cd01551383ac
gd1984-04-01-2A.flac:04bc9a74fdeaa4b4897916075bbf447f
gd1984-04-01-2B.flac:a6541ddf74ff54081c4039e45fbc52b1

61163a7153cd82c0fca9169087ae2241 *gd1984-04-01-1A.flac
e766532fa83dfcf53b6bfd908c586f19 *gd1984-04-01-1B.flac
17a571b685f20f96780a76c9661a86b7 *gd1984-04-01-2A.flac
192fa5717cebbaf21b39dc40760af299 *gd1984-04-01-2B.flac