Quad II Classic Mono Valve Power Amp (Pair)

Quad QII-Classic Valve Amplifier - Front Quad QII-Classic Valve Amplifier - Side Quad QII-Classic Valve Amplifier - Rear Quad QII-Classic Valve Amplifier - Top Quad QII-Classic Valve Amplifier - Angled

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Quad are a highly renowned manufacturer of quality hifi electronics and loudspeakers, having developed award-winning audiophile-standard products standard for over 80 years, their highly acclaimed reputation is well-earned. The company originally built speakers for public address, moving onto domestic hifi following the end of the war. The first commercially available products were the Quad 22 Pre-amp and Quad II Monoblock Power Amplifiers, both of which were on the market for ten years to great success. 

Quad now develop a wide range of hifi products at varying price points, such as the S Series, Z SeriesElectrostatic Series of loudspeakers and accompanying amplifier ranges the Vena and QII Series. Quad also build a range of Active Loudspeakers. Quad continue to win the hearts of critics and consumers alike with each release and each product bears the same original design philosophy set out by founder Peter J. Walker; to design and engineer a product that offers 'the most accurate' sound response for the best price. 

Quad's QII (or 'Quad 2') series is based on the original Quad II amplifier, built by the company's founder Peter Walker in 1953, but now seeing the integration of finer components and materials, more intricate yet effective circuit integrations and a more precise manufacturing process. The QII series features some of the most refined sounding valve pre/power combinations on the market today, retaining the genuine heritage and craftsmanship that Quad have preserved over 80 years of designing and engineering quality hifi. 

The Quad II Classic is a monoblock power amplifier, based around the design principles and sophistication of the original 1950s Quad II. A newly developed chassis allows for more room internally for the much larger componentry that the Classic is comprised of. The internals of the Classic are wired by hand and follow a similar topology to the original Quad II power amp. Featuring KT66 output valves, a highly refined and efficient 15 watts per channel is achieved.



 Input Sensitivity  775mV RMS
 Power Output  15W RMS
 Output Impedence  8 Ohms
 THD @ 700Hz 0.8% @ 12W 
 Residual Hum and Noise Better than -90dB 
 Frequency Response  10H - 20kHz (± 0.2dB)
 Damping Factor 11.75 @ 700Hz (referred to 8 Ohms) 
 Valves 2 x EF86
2 x KT66
1 x GZ34 
 Dimensions (W x H x D) 335 x 121 x 171mm 
 Weight 8.3kg 

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Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at http://www.interlinkexpress.com to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25