Roland M-150
A model designation with no paper trail - and every source that mentions it points somewhere else.
Overview
The archive's job is to be honest about what it knows. The Roland M-150 is listed in the brand catalog as a synthesizer, but no verified documentation has been located to confirm what it actually is, when it was made, or what it contained. There is no fact sheet behind this entry - no price, no specification, no production year, no manual, no review. What follows is a record of the search, not a description of the instrument.
Collectors researching this designation will hit the same wall. The "M-150" string turns up in period print, but almost never attached to Roland. A 1990s Neumann microphone shares the number, and it appears in recording-magazine coverage of that mic and its use on orchestral sessions. A guitar-string listing carries the M150 designation under the Martin brand. A Marshall cabinet advertisement from the same era uses the 2196 and 2195 numbering for its own products. None of these name a Roland synthesizer, so none of them can be used as evidence about one.
The archive's own PDF index returned seven chunks for the M-150 query. Every one was misattributed: Neumann microphone reviews, a Martin string reference, a Marshall/Rose-Morris advertisement, a Canadian Musician interview, and a Diana Krall session breakdown. Not one chunk names a Roland product. That is a meaningful negative result. The M-150 designation is either extremely obscure, regionally limited, or possibly a catalog error that has propagated between databases without any primary source behind it.
Period magazine chunks were also checked. The Sound on Sound clearance listings from 1996 and the Pro Sound Sweetwater advertisements from 2014 mention an "M 150 Tube" - but in context that is the Neumann microphone again, not a Roland synthesizer. The archive will not stretch those citations to cover a product they do not describe.
In practical terms, if a reader has a Roland M-150 in front of them, the archive cannot yet tell them what they are holding. The model number does not correspond to any documented Roland synthesizer in the published brand catalog. The sibling pages - JV-1080, JV-2080, XP-10, D-50, Juno-106 - all have solid documentation behind them. The M-150 does not. It may be a mislabeled unit, a rebadged OEM product, a regional variant, or a database artifact. Until primary documentation surfaces, the archive does not know.
Similar items on eBay
No exact Roland M-150 listings are live right now — these searches show current Roland and similar vintage synth gear on eBay:
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.