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Product Description

  • Original box and packing.
  • Quite superb condition in every regard.
  • Fully tested and 100% as per factory.

A faithful reproduction of the original, the new Quad II-classic offers audiophiles the chance to recreate the spirit and atmosphere produced from one of the most famous amplifiers in audio history.

The original Quad II was first launched in 1953, designed by Peter Walker. At the time, many of his contemporaries were also producing good quality valve amplifiers. The Quad II looked, in comparison, very simple and unassuming, but its performance was far beyond that which its diminutive dimensions might suggest.

The property which set the Quad II amplifier apart from other amplifiers of the time was its output stage. It was arranged such that the cathode coupled circuit emulated the performance of triode operation, but with the size and efficiency characteristics of pentode operation.

It was this breakthrough that ensured the Quad II was to remain in continuous production until 1970. Peters circuit, notably the design of the output transformer, has become the stuff of legend amongst electronics engineers. Studied and analysed by the finest minds in the industry, the elegance and coherence of the design is still regarded as a reference today.

Given the quite modest components of the day, he was able to engineer something which was quite literally greater than the sum of its parts.

The Quad II-Classic has been recreated accurately with output valves and input valves the equivalent of those used in the original design. The same balancing act has been employed to ensure the same wealth of detail and gentle tone of the original.

The output valves produce around 15watts per channel, operating in Class A which, although slight by modern standards, allows a gloriously sweet and refined sound with appropriately matched contemporary loudspeakers.

Specifications

Valve complement 2 x KT-66 / 2 x EF86 / 1 x GZ34
Total Harmonic Distortion at 700 Hz 0.3% at 12W
Frequency Response 10Hz to 20kHz (+0 / -0.2dB)
Damping Factor 11.75 at 700Hz (8 ohm)
Hum and Noise better than -90dB
Loudspeaker taps 8 ohm
Sensitivity 1.4 V RMS
Power Consumption 90Va maximum

Specifications

Product Type
Power Amplifier
MPN
QUAD-IICLASSICMONO-XD
Brand
QUAD
Condition
Used
Product Code
QUAD-IICLASSICMONO-XD
Weight
18kg

Delivery Information

Delivery is free for all orders over £250.

'In Stock' items ordered before 1pm will be dispatched the same day.

We use DPD Local 'Next Day Service' for most UK deliveries. Orders sent via 'DPD Local - Next Day Service' will be fully tracked with a 1-hour delivery timeslot on the day of delivery. Standard delivery is Monday to Friday.

Saturday delivery can be selected at checkout for £19.95.

Small items and LP's may be sent using Royal Mail.

Large/heavy items may be sent using TNT Express.

For all other countries please visit the 'Delivery Information' link in the footer.

Occasionally, due to stock demand, we can sell out. If this occurs when you make a purchase, we will inform you quickly. Most out of stock items are available for dispatch within 3 working days. If your purchase is urgent, please contact us to check availability.

Customer Reviews

Quad II Classic Mono Power Amplifier (Pair) - Ex Demo

Item in Stock

Product Code QUAD-IICLASSICMONO-XD

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Only left in Stock

Customer Reviews