I got it a few weeks ago, and the mellotron sounds are simply superb, as are many of the string and polysynths.
I don't care much for the presets, so I've already made a number of 'Tronchestra' sounds, including a Genesis 'Watcher Of The Skies', some nice polysynths, etc. All as part of my exploring in programming on the KARMA - having got the EXB not long after I got the synth in the first place
If anyone else has the PCM05 EXpansion Board, I'd be happy to share some patches with you. That goes for non-karma users too.
Current Gear: Kronos 61, RADIAS-R, Volca Bass, ESX-1, microKorg, MS2000B, R3, Kaossilator Pro +, MiniKP, AX3000B, nanoKontrol, nanoPad MK II,
Other Mfgrs: Moog Sub37, Roland Boutique JX03, Novation MiniNova, Akai APC40, MOTU MIDI TimePiece 2, ART Pro VLA, Focusrite Saffire Pro 40.
Past Gear: Korg Karma, TR61, Poly800, EA-1, ER-1, ES-1, Kawai K1, Novation ReMote37SL, Boss GT-6B
Software: NI Komplete 10 Ultimate, Arturia V Collection, Ableton Live 9. Apple OSX El Capitan on 15" MacBook Pro