MATRIXSYNTH


Monday, December 08, 2025

Oberheim PHASOR P-100 Pedal aka Maestro MPS-2 Miniphase. 1974 Pot & Chip dates SN 1605

Note: links to listings are affiliate links for which the site may be compensated.
video upload by Edward Jones

Casio MT-40 through Oberheim Phasor P-100

video upload by Edward Jones



via this eBay listing

Pics of the inside below.

"Genuine 1974/5 early production Oberheim Phasor aka Maestro Mini-Phase.

This is legitimately a piece of guitar pedal history!

IC and Pot values date this to Late 74. IC dates are 18th and 23rd week of 1974. Pot 38th week 1974.

All original, all parts functioning.
All capacitors are working as intended, so none have been changed.

Designed by legendary Tom Oberheim.
While it's not the first phaser to ever hit the shelves, the Maestro Mini-Phase and this Phasor are the firs "Pedal" format phaser in the form factor we all know and love.

This is a buffered bypass pedal.
Anyone claiming theirs is True Bypass has either modified it, or misunderstands true bypass and are just using it as a buzzword.
I included the schematic for you.

This has seen little use it has not been used for the last 25 years as it was in storage.
The owner had it stores in a box of miscellaneous equipment, which was mislabled.
Some battery leakage as shown, but the battery holder is not adjacent to PCB so no functional damage occurred.
I haven't attempted to remediate the damage as I don't want to damage the paint."

Meet Teenage Engineering's Carlo, Miki, Ivana, Gisela, Olga, Leila, Bogdan, and Hatshepsut

Note: links to listings are affiliate links for which the site may be compensated.
Bad Gear - TE Choir video upload by AudioPilz

Note this video is from two years ago, but I never managed to feature it or these devices on the site until now as they aren't really synths. These come to you curtesy of a supporting member who has them listed on Reverb here.

"Chapters:
00:00 Intro tune
01:09 Overview Bad Gear - TE Choir
01:28 Presentation of the Dolls (feel free to skip)
02:10 Standalone Mode, Control via Bluetooth Midi / OP-1 Field
02:39 How does it work?
03:19 Start/Stop a Song
03:39 Midi Control, Articulation
04:16 Limitations, Bugs, Issues, Latency
04:49 How it ACTUALLY works in practice
05:01 What else??? (Github, Pricing, Thanks)
05:30 Hate
05:54 Jam 1 (Sleepy Anime Music)
06:45 Jam 2 (Classic Bad Gear Jam)
07:07 Finale (Art House)
07:37 Verdict"

And a short one from HAINBACH:

Teenage Engineering Choir Unboxing And Sound
video upload by HAINBACH



via these listings

Be sure to check out the seller's other listings.

Each singer/member has its own vocal tone and is in very good condition and the electronic modules all work.

Holiday Songs

"Shchedryk" (Carol of the Bells)
"Deck the Halls"
"Sankta Lucia"
"O Come, All Ye Faithful"
"O Tannenbaum" (O Christmas Tree)
"Silent Night"
"Prelude" (a short introductory piece)
"Auld Lang Syne" (also available in their downloads)


All preloaded songs - more can be played live with BLE MIDI

silent night – franz xaver gruber, joseph mohr, j f young*
o tannenbaum – trad., ernst anschütz*
o come, all ye faithful – john reading, frederick oakeley*
sankta lucia – trad. via teodoro cottrau, sigrid elmblad*
deck the halls – charles wood, thomas oliphant
shchedryk (carol of the bells) – mykola leontovych
auld lang syne – trad. via robert burns
love me, and the world is mine – ernest ball, dave reed jr.
i never knew – tom pitts, raymond egan, roy marsh
sverige – wilhelm stenhammar
dear old girl – theodore morse, henry buck
gute nacht – robert schumann, friedrich rückert
sweet adeline – harry armstrong, richard gerard husch
warm-up exercise: signore – trad.
in all my dreams, i dream of you – al piantadosi, joe m
den blomstertid nu kommer – trad., israel kolmodin
i've been working on the railroad – trad.
now is the month of maying – thomas morley
gaudeamus igitur – trad.
warm-up exercise: zing-a-mama – trad.
the darktown strutters' ball – shelton brooks
an die freude – ludwig van beethoven
en sommarafton – adolf fredrik lindblad
tourdion – pierre attaingnant, césar geoffray
goodbye my coney island baby – les applegate
o haupt voll blut und wunden – johann sebastian bach

Pictured: Carlo & Miki

CHOMPI: TAPE Video Manuals


video uploads by CHOMPI CLUB and chase bliss

"Welcome to CHOMPI! This is a series of companion videos to the CHOMPI manual and firmware."

Playlist:

1. CHOMPI: TAPE - 1 - Getting Started
2. CHOMPI: TAPE - 2 - Collecting Sound
3. CHOMPI: TAPE - 3 - Effects
4. CHOMPI: TAPE - 4 - Layering
5. CHOMPI: TAPE - 5 - Hidden Surprises
6. CHOMPI: TAPE - 6 - Customizing

Chompi Club looper/sampler w/ Original Box

Note: links to listings are affiliate links for which the site may be compensated.


via this Reverb listing

See the seller's other items for more.

Nystrom Crum Hum

Note: links to listings are affiliate links for which the site may be compensated.
video upload by AA Battery

"The new CRUM HUM from nyström is a 3 voice generative synth with sensitive touchpads, 12 sound engines and 12 keys that the notes are generated in. Check out this walkthrough to see how it works and look forward to more jams!"

CRUM DRUM and HUM jam
video upload by AA Battery



via this Reverb listing

Spektro Audio NGEN - Generative MIDI seq

Note: links to listings are affiliate links for which the site may be compensated.


via this Reverb listing

See the seller's other items for more.

Generative tracks, patterns, MIDI FX and more. You set the scale, or switch between 4 parts."

You can find overview videos in previous posts here.

Decade Bridge Noria - drone synth

Note: links to listings are affiliate links for which the site may be compensated.


via this Reverb listing

See the seller's other items for more.

Demo in the listing previously posted here, additional demos here.

Alesis A6 Andromeda 61-Key Polyphonic Analog Synthesizer SN (21)A60500329 w/ New Blue Display

Note: links to listings are affiliate links for which the site may be compensated.


via this Reverb listing

"The Alesis Andromeda is legendary. The first (and unfortunately, last) analog synth from Alesis sounds incredible and has a deep and extensive voice architecture. This unit has been serviced, all pots, wheels, aftertouch, and ribbon pass the diagnostics. A new blue display has been installed. There are some scratches and wear marks on the case, but nothing egregious."

Crumar Bit99 - Relective 3D Inscriptions Intact Version

Note: links to listings are affiliate links for which the site may be compensated.


via this Reverb listing

"BIT99 in very good condition.

40 years vintage synth released in 1985

Analog synthesizer.

Polyphonic

Rare 3D Reflective Lettering Intact .

Superb 80s Look . TRON movie design inspiration

Beautiful Violins, Brass, and Bass.

Prophet 5 filter and sound family type"

UPGRADED Akai S900 MIDI Digital Sampler SN 20145-00499

Note: links to listings are affiliate links for which the site may be compensated.


via this Reverb listing

"Serviced and working perfectly. Comes with power cable. 220V/240V version.

Upgrades:

Gotek USB emulator

Configured USB-drive. (Including OS 4.0 and virtual floppys with sounds).

Recapped PSU.

Upgraded Screen (And no noisy converter.)

New power input with ground pin, now accepts common C13 power cable.

3D-printed floppy drive hole cover.

RAM-chips have been checked and serviced."

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