![]() ![]() ![]() Quad employee Roger Hill notes that, 'If you look at the Quad 22 and the Quad 33, it fits in the same furniture by just squaring off the corners.' The styling was brought up to date, allowing the unit to be free-standing or cabinet-mounted. Many have noted that the Quad 33 is in many ways a solid-state Quad 22. Quad launched the 33 pre-amplifier and 303 stereo power amplifier in 1967 after a typically long gestation period. Nearly 40 years on you can still find them, or some of their variants, in many modern amplifiers.' The EF86 and KT66 were the devices of yesterday, the BC109 and the 2N3055 were the devices of tomorrow. There was a learning curve, but manufacturers did eventually produce high-gain, low-noise input devices and stable, wide bandwidth output transistors. It arrived in the form of the silicon epitaxial transistor, which Hill states, 'had virtually none of the disadvantages of its germanium cousin. Unlike some, Quad did wait for a dependable device. Prevailing transistor amplifiers had neither the power response nor the stability to drive the ESL-57 satisfactorily and the world at large would just have to wait if the remarkable qualities of this speaker were not to be thrown away by an unsuitable design.' 'In many ways Quad had built a rod for its own back. ![]() You can find more information available in our Preamplifier review section and on our Quad brand page. You can compare the Quad 33 preamp and 303 amp against other products by reading our reviews for the Unison Research Mystery One preamp and the Beard BB 30-60 integrated amp. The original Leak Stereo 30 is one such example. Gordon Hill recalled, in, 'Quad was one of the last audio manufacturers to introduce a transistor amplifier.Many famous names were early adopters and they were a commercial, if not an audiophile success. Difficult though it may seem for younger readers to envision this, there was a time when major brands' catalogues included both technologies. Read about classic tube companies on 's Tube Blog.īy the mid-1960s, the transistor had made such broad inroads into audio that even valve die-hards like Quad, McIntosh, Leak and Radford were having to produce both.Read audiophile preamp and amp reviews from the likes of Audio Research, Krell, Mark Levinson and many others at.Aaah, if only every manufacturer had this dilemma - too many classics in its c.v.! With Quad, do you think first of the original ESL or ESL63? The Quad 22/II? Or do you picture their biggest-selling pre-amp ever and their second-best-selling power amp, the 33/303 combination? For those of a certain age, who arrived on the hi-fi scene after 1967 but before the dawn of CD, that was the heart of a Quad system, and for many of them, it was the introduction to the UK's most venerable brand. ![]()
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