For music lovers.
Revox B200 series
The first Multiroom system.
The most important devices of the M200 series
Revox B215, Cassette tape recorder (1985-1990)
The redeveloped B215 cassette tape recorder was presented at the same time as the introduction of the infrared-controllable B200 series. The output and the tape counter/timer displays were modified to match the new design by making the change to liquid crystal displays (LCD). Drive and amplifier electronics were unchanged. On the other hand, a calibration computer was added to enable the optimum usage of the different types of tapes. Using an integrated sound generator, it was able to determine the parameters for recording level, equalisation and pre-magnetisation within 20 seconds, by taking six measurements.
Individual cassette data could be stored at six memory positions. The B215 allowed both manual and automatic output control in the shape of peak level measurement and retention. The tape counter was also made more intelligent though a short calculation process that enabled it to determine any tape position on a tape that had not been rewound to the beginning. Additionally, the counter electronics enabled the saving of two locator positions and repeater operation. This "intelligence" was handled by the integration of no less than three intercommunicating processors.
Revox B226, CD player (1986)
From the outside it was difficult to spot the difference between the Revox B226 and its predecessor the B225. However, a lot had changed inside the device. The CD drawer was lighter and more stable because the complete drive was no longer fully extended. As a result, the die-cast drive chassis was cushion-mounted, in order to avoid resonances. Two fully separated digital analogue converters were deployed to enable full mono compatibility. The processing of the digital data flow was handed over to the latest, fully-integrated ICs. Search speed was increased to over 15,000 tracks/sec so that the scanning of a full CD took less than 3 seconds.
The B226-S with black/gold design was the jewel in the crown of Revox CD players.
Revox B250 Stereo amplifier (1988)
Exactly 20 years after the first Revox hi-fi system appeared in a uniform design, Revox presented an amplifier and a tuner family, each with three models. An economical approach was adopted by using a concept that to a large extent was identical; the same housing construction and essentially the same technology. The flagship of the amplifier family was the B250-S with a black, polished front panel, push buttons with gold facets and black side panels with a true piano lacquer finish.
The B250 standard model was technically identical but had a champagne-coloured look. An alternative for the price-conscious customer was the B150 with the same switching technology but with a somewhat reduced output performance and a simpler operation, without the complete range of programming options and the controller connection (Serial Link). Amongst the wide range of connection options, the Serial Link was of particular significance as it enabled access to external IR remote control components, such as the B209 IR sub-controller or the B206 IR relay. This opened up the path to the advanced "Easy Line" Multiroom system.
The display of the main operating functions both in a graphic form or in text, through a green illuminated 20 position 5 x 7 dot matrix, was particularly sophisticated. An additional LCD under a smoked-glass cover provided further programming assistance. One innovation was also the semi-automatic programming of input sensitivities with reference values stored in a ROM. All internal amplification changes were carried out, software-controlled by electronic actuators with a control range of 100 dB. The sound control network was also very sophisticated with 3 bit D/A converters, in order not to downgrade the switching's high override reserve. High-current outputs in a fully complementary symmetrical design and powerful power components gave the amplifiers a high stability.
Revox B260 FM Tuner (1988)
A new FM tuner family in a new design and slim housings were developed in parallel to the B150, B250 and B250-S amplifier families. The demand to hold on to the position of market leader in respect of reception power, transmission quality and operational comfort could only be met by using the latest designs. It was therefore no coincidence when Revox tuners were often quoted as reference receivers by test magazines or were deployed by broadcasters as devices for monitoring outgoing programmes.
Two criteria were at the focus of the development of this FM tuner family. On the one hand the number, the power and the technical quality of VHF stations was increasing and a growing number of listeners were listening to broadband cable equipment. On the other hand, the new radio data system (RDS) was just about to be launched. The question of powerful stations and high signal levels on broadband cable systems could only be addressed with a high intercept HF input stage. In contrast, high sensitivity was called for, for weak signals. In order to provide a solution for these competing requirements, two separate HF input stages with appropriate selection tools were built into the Revox B260. The low-price Revox B160 was designed for cable reception, without a dual HF component. The pluggable RDS module with its own RDS microprocessor for decoding the digital 1,187.5 bit/s data flow ensured future-proofing.
In this way, super-comfortable searching for VHF stations became a reality with the B260 long before the majority of stations switched over to using RDS identifiers. The programming on a B260 was prepared for this, in that as well as a free station name, the complete parameter set was stored for each station, consisting of the frequency, RF mode, A/B antenna, IF mode, mono, Blend l/ll, muting and RDS. Other exclusive features were the fluorescent matrix display and the secondary LCD showing the signal strength over a range of more than 100 dB and the quartz-accurate "Center Tuning".
Revox B291 Record player (1986)
As compared to the B791, which itself was derived almost unchanged from the B795, the B291 record player had an IR module for the remote control of the pick-up arm movements.
The B291-S record player was matched to the design of the black/gold S series.