I recently found a second hand Roland R8 for cheap, in decent conditions but WITHOUT the Power Supply. I discovered only later that the Power Supply on this Roland Drum Machine (and on the Roland R5 too, apparently) is NOT a standard Power Supply like the one used on most electronic devices, but it uses a proprietary +10/-10 Volts PSU with an uncommon connector.

I Googled a bit and found some replacement PSUs, but they were about 70 euros each. This was exactly what I paid for the Roland R8 and I really didn't want to spend the same amount for JUST THE PSU!!!

Read more: Roland R8 Power Supply Replacement

It looks like there's a known bug in SoundPaint, apparently on MACs only where, after downloading some content, the "unpacking" process simply halts with a "error occurred - please restart downloading" and nothing else.

Actually, this seems to be a problem with the "standard" Unarchiver app on MACs, which is used to unpack (or to "unrar") this file

The whole download, at least in the case of the Free Piano, is made by 8 parts. Here they are along with the "unpacked" folder that was created by the downloader, which is nearly empty (just one file in it):

Read more: How to fix the "error occurred - please restart downloading" in SoundPaint

I recently discovered an Open Source project called Minidexed, which basically uses a Raspberry PI in "bare metal" mode, with a fork of the wonderful Dexed synth, which allows to emulate 8 DX7 on a single Raspberry, much like the old TX816.

Each "instance" can have its own voice, and you can load different Banks of sounds.

Read more: Minidexed - 8 DX7 in one using a Raspberry

I recently found a 360 Systems MIDI Bass Pro for cheap and bought it. It's the "Rack" version of the "Desktop" MIDI Bass and It has 8 sounds on board.

The unit can be expanded by installing other sounds using EPROMs, it has 16 slots in total and only 5 of them are used by default.

Read more: 360 Systems MIDI Bass Pro. EPROMs not Working?