If Richter is your first choice search out LP's. But honestly if you want a fine recording and performance I suggest you look elsewhere. Even Ralph Kirkpatrick's recording on DG would be a better choice, though the recording is close miked. If it were up to me my first two choices (harpsichord purist) would be Davitt Moroney's and Gustav Leonhardt on Harmonia Mundi and lastly Helmut Walcha on EMI Electrola/Odeon on LP. You can find the Moroney on CD.