Quad 33 Pre Amplifier
The Quad 33 Pre Amplifier is a classic example of British hi-fi at it's very best. First launched in 1967 to partner the Quad 303 Power Amplifier, the Quad 33 Pre Amplifier is a very high quality well designed pre amp using high quality push switches to select the input source which then passed through tone filters and a volume control before the sound is outputted to the power amplifier.
Although nearly 40 years old, it is still a very popular and flexible design, the disc input section (phono) for example is a moving magnet type with a four way selector card at the back which allows input sensitivity to be adjusted to suit the cartridge more closer as well as providing the option of feeding a CD source through the Quad 33.
One very good thing about the design of the Quad 33 Pre Amplifier is that it is modular meaning that you can upgrade the plug in boards such as the disc and tape boards and also completely bypass the tone filters. These new boards are available from Net Audio and make use of very high quality Burr Brown op amps, Elna Stargate and Wilma Polypropolene capacitors and surface mount resistors to ensure that the Quad 33 Pre Amplifier sounds as good as anything on the market today. More information on these upgrades can be found on Net Audio's website.
The Quad 33 Pre Amplifier is another popular piece of Quad hi-fi that features regularly in Ebay auctions with good condition amplifiers fetching somewhere in the region of £50-£100 which is a bit of a bargain if you intend to take advantage of Net Audio's Quad 33 upgrade path which will cost around £150-£200 depending on you chosen options. For under £300 you can get yourself a very high quality modernised pre amplifier.
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