Swiss Francs (approximately US $70.00) for all of the issued and outstanding stock in Studer Revox. Harman assumed post-acquisition indebtedness of Studer Revox of approximately 23 million Swiss Francs (approximately US $16 million). The founder of Revox, Willi Studer, died on 1 March 1996. The company logo is the word "REVOX" in capitals, with a "V" larger than the other letters; when printed in fixed-size type, the mixed-case spelling "ReVox" is sometimes used, but in all older and most newer references the name is shown as "Revox". Many consider ReVox open-reel tape recorders to be high-end audio equipment. The most famous of these are the G36 (valve type), A77 (solid state with relay controls) and B77 (solid state with logic control and direct-drive). The A700 was the top-of-the-line 1970s machine with 3-speed quartz PLL capstan, or, like the B77 which appeared in 1979, variable tape speed from 2.5 to 22.5 inches per second. Pictured to the right is the PR99 Mk2, a variant of the B77 for professional users, differing from the B77 in having balanced line in/out, and a real-time counter and auto-locator. The PR99 series was superseded by the C270 series, available also in multi-track formats (C274, C278). Robert Fripp used Revox machines to produce his Frippertronics recordings in the late 1970s onward, until he replaced the recorders with digital delays in the 1990s. Cassette recorders, CD players, televisions Revox also produced well-regarded cassette tape recorders, notably the B710 and later the B215, which used the same transport and substantially the same electronics as the more expensive Studer A710 and Studer A721, respectively. It is worth noting that the Revox H11 and C115 cassette recorders are not true Revox or Studer products, but rebadged Philips Model FC60. As such, they do not meet the exacting performance standards of the B710, B215 and H1 which are Studer designed and built. In the same fashion, the Revox B225 and B226 compact disc players were very heavily based on the Studer A725 and A727 professional CD players. Likewise, the Revox FM tuners were almost identical to the Studer professional models. A limited run of the B226 CD player was issued to celebrate Studer's 40th anniversary. Dubbed 'The Signature', it featured a black faceplate (in contrast to the then silver (anodized aluminium) B226) and used the high performance Silver Crown version of the Philips TDA1541 DAC, which later featured in non-Signature B226-S