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The Quad II-forty power amplifiers are much more than

a tribute to one of the most famous designs in audio -

they are both refined and powerful in the modern sense

of the terms.

Although the circuit topology has changed little from

the original, significantly better components and a

brand new transformer design - still delicately balanced -

means that they are fast, crisp and detailed, whilst

producing an output current, more than capable of

driving modern loudspeaker loads, even our own ESL

loudspeakers are well within their capabilities.

The champagne finished chassis is strong and heavy,

internally wired with solder tags - not PCBs. The KT-88

output valves in push-pull configuration are visually

“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

stunning, sitting safely within a cage to protect them.

Gold-plated phono connectors replace the ‘Jones’ plugs

of the original - with a choice of 4ohm or 8ohm taps,

allowing for the widest possible choice of loudspeakers.

Every product we make is hand-built by craftsmen for a

lifetime of duty. Quad products rarely, if ever, need

replacing and we regularly service and maintain

products over fifty years old.

This means many of the original Quad II amplifiers have

been passed down, into the hands of the children - and

even grandchildren - of the original owners, something

that is uniquely Quad in essence. A product that is

relevant today and will remain so for generations to

come.  

Summary of Contents for Vaccume Tube Amplifier Systems

Page 1: ...the closest approach to the original sound V A C U U M T U B E A M P L I F I E R S Y S T E M S...

Page 2: ...2...

Page 3: ...h 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...

Page 4: ...y 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...

Page 5: ...egie Hall in New York Audiences were amazed at the similarity the Quad amplifiers were able to reproduce relative to the live performance Since these early demonstrations of true high fidelity our pro...

Page 6: ...ing 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 by...

Page 7: ...7 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...

Page 8: ...struction The total line gain is 15dB with a high quality potentiometer controlling the output levels Reminiscent of the original QC 22 control module there is a simple balance control allowing for va...

Page 9: ...tain optimum signal purity From the relay switching to the gold plated terminals each component has been selected for its audio performance The chassis is painted to match both the Quad II Classic and...

Page 10: ...ned 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 li...

Page 11: ...moving magnet cartridges This can be fitted as standard or added later For the connoisseur however there is the Quad twenty four P dedicated valve phono stage This has been designed for Quad by valve...

Page 12: ...ics of pentode operation It was this breakthrough that ensured the Quad II was to remain in continuous production until 1970 Peter s circuit notably the design of the output transformer has become the...

Page 13: ...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...

Page 14: ...by a transistor based design The Quad II classic is one of the finest of these vacuum tube amplifiers Although small in dimension and modest in design the purity with which it conveys not just the mus...

Page 15: ...and Noise Input Impedance Moving magnet Moving coil Stage Gain High sensitivity Medium sensitivity Low sensitivity Nominal output level ref 5 2mV MM Low Inputs Outputs Power consumption specification...

Page 16: ...ne 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 Quad is a...

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