Yehudi Menuhin, Wilhelm Kempff - Beethoven: Complete Violin Sonatas (4CD) (1990)

Actually, there is a considerable amount of available versions in the market. But just a few possess the radiant sense of expression of Beethovenian pathos. Many connoted interpreters mistakenly play Beethoven just remarking the Romantic mood, without going deep inside the score, and overlooking the fact the genius simply cannot be labeled.
The combined talent of these notable musicians produced one of the two best sets of Violin Sonatas ever recorded. In one hand we have the undeniable musicality, flair, interpretative freshness and aristocratic phrasing of Wilhelm Kempff, plus the distinguished refinement, vibrant fingering, overwhelming tune and sublime vibrato of Yehudi Menuhin.
There is not any failed performance. They are absorbing, enraptured and visionary readings that bring us back the minimum facets of Bonn's Giant.
You may acquire other versions but it will be hard to get such level of vigorous cohesion, musical honest and wisdom approach so well defined throughout this set. A fundamental treasure in your collection.