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VA CUUM TUBE AMPLIFIER SYSTEMS
...the closest approach to the original sound
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The Quad II-forty THE QUAD II-FORTY valve amplifier is not only one of the finest sounding valve power amplifiers available today, it is an aesthetic and engineering masterpiece. An understated elegance lies beneath the smooth curves and lustrous finish, for the power amplifiers use a circuit dating back over fifty years to the time when vacuum tubes ruled the electronics industry and Peter Walker was the master of audiophile design. He often shunned traditional thinking, preferring to go his
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“Factor out nostalgia. Forget the miracle of Quad making valve amps in the 21st century. Look at the Quads in terms of a current pre/power tube combination. Then look at the opposition. Now factor in gorgeous styling, superb build quality, perfect ergonomics, ample grunt, genuine heritage and the kind of sound which allows valve enthusiasts to show two fingers to transistor users.” – Ken Kessler, Hi-Fi News The Quad II-forty power amplifiers are much more than stunning, sitting safely within a c
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Quad products have always been amongst the finest audio products in the world. When Peter Walker started making commercial PA systems in 1936, few could have predicted the revolution in hi-fi that many of his products were to cause, the longevity they would have and the esteem with which they would be held. In the early 1950s, he and Gilbert Briggs, founder of Wharfedale, embarked upon a series of now famous concerts demonstrating how real high-fidelity music should be virtually indistinguishab
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The Quad QC-twentyfour Unlike the power amplifiers, the Quad Control unit utilises a completely new circuit design. Once again, the circuit is simple in concept yet remarkable in execution. Our designers scoured the globe for the very finest components, with possibly the best example of this being the new ‘old stock’ 6111WA double triode. Designed as a special military valve, it is hard wired to the circuit and has an estimated life of nearly 100,000 hours. Together with transformers designed b
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“It is so much better in terms of high fidelity, in its purest sense. It reminded me how Quad retain an almost unique grip on the concept.” – Noel Keywood, Hi-Fi World 7
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“Quad has succeeded where few of hi-fi’s gamblers dare: They’ve followed the ESL-989 with not just a worthy amplifier, but with a silent smooth and precise control unit as well.” - Ken Kessler, Hi-Fi News Peter Walker always believed that an amplifier should be The total line gain is 15dB, with a high quality as simple as possible - engineer with the fewest possible potentiometer controlling the output levels. components and with a performance largely Reminiscent of the original QC-22 control mo
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A completely new design, the QC-twenty-four pre The standard QC-twenty-four is amplifier is both neutral and detailed. Using a military specification 6111 valve, which is so reliable, it’s hard- line level only. There is an option wired to the circuit board. Everything has been designed to maintain optimum of a solid-state phono stage which signal purity. From the relay switching to the gold-plated terminals, each component has been selected for its can be added when new, or at a audio performan
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Designed by valve supremo, Tim DeParavicini, the Quad twenty-four P is a stunning addition to the range. Designed holistically with the power and pre-amplifiers, it brings an entirely new dimension to vinyl listening 10
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The Quad QC-phono stages For the analogue purist, the combination of a good valve amplifier and a good turntable is the closest possible approach to the original recording. There are two options for adding such functionality to our valve pre-amplifiers. A solid-state module is available for the standard QC- twenty-four pre-amplifier (known as the QC-24 phono stage) which allows direct connection of a turntable with an internal switch to change between moving coil and moving magnet cartridges. Th
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The Quad II-classic A faithful reproduction of the original, the new Quad II Peter’s circuit, notably the design of the output Classic offers audiophiles the chance to recreate the transformer, has become the stuff of legend amongst spirit and atmosphere produced from one of the most electronics engineers. Studied and analysed by the famous amplifiers in audio history. finest minds in the industry, the elegance and The original Quad II was first launched in 1953, coherence of the design is stil
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‘the closest approach to the original sound...’ has been a Quad philosophy since 1936. More than just a slogan, it underlies the company’s commitment to producing the finest audio equipment, capable of reproducing all the elements and emotion of a live performance. 13
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Quad sound systems have always provided high levels of “The Quad II Classic uses listening pleasure to their owners. Our philosophy has always been one of reproducing the ‘live’ experience in the finest quality the comfort of your own home. Whilst many modern amplifiers are stunningly accurate components, each hard and offer breathtaking resolution and distortion figures in tiny fractions of a percent, many also loose sight of wired onto a robust the overall aim - which for Quad, is to bring ple
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specifications Model II-forty II-classic* 40W RMS 15W RMS Power Output 0.3% @ 40W 0.3% @ 12W THD @ 700Hz 0.03% @ 1W Better than -80dB Better than -90dB Residual hum & noise 10Hz–30kHz(+0dB/-0.5dB) 10Hz–20kHz(+0.2dB) Frequency Response 20 @ 700Hz 11.75 @ 700Hz Damping Factor 180W maximum 90Va maximum Power Consumption Loudspeaker Taps 4 ohm and 8 ohm 8 ohm 2 x 6SH7 Input 2 x EF86 input Valves 2 x KT88 Output 2 x KT66 Output 1 x 5U44G Rectifier 1 x GZ34 Rectifier Sensitivity 1V RMS 1.4V RMS *The Q
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Quad Electroacoustics Ltd, IAG House, Sovereign Court, Ermine Business Park, Huntingdon, PE29 6XU Tel :- 0845 4580011, Fax :- 01480 431767 www.quad-hifi.co.uk The information in this brochure is subject to change without notice. All rights reserved © 2004 Quad Qu.V 15.10.2004 Quad is a member of the International Audio Group
