QUAD PA-One Valve Headphone Amplifier and DAC

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Finally a mainstream high end valve headphone amplifier has arrived in the form of the stunning Quad PA-One headphone amplifier. This highly versatile and user friendly product has been designed to be the perfect match for any Hi-Fi fan. The past few years have seen phenomenal growth in the sales of headphones. However, most high quality headphones never realise their full potential because they are usually connected to poorly match amplification. With the Quad PA-One headphone amplifier, that is all about to change….

The Quad PA-One headphone amplifier has been designed to achieve the full potential of any set of headphones connected to it. A wide variety of digital and analogue sources are able to be connected to the Quad PA-one, including balanced XLR, RCA phono, coaxial, optical and USB.

With the increased popularity of computers being used as a source component, The Quad PA-One USB DAC allows you to enjoy listening to digital music sources from computer or laptop (MAC or Windows) via a USB connection. The PA-One is compliant with USB 1.1 and 2.0 and supports sampling frequencies between up to 192kHz, providing the music enthusiast with increased flexability.

The engineers at Quad have incorporated valve amplification within the Quad PA-One. Carefully selected Hi-Fi amplification  valves have been specified – 2 x 6SL7, 2 x 6SN7 and 1 x EZ81. The chosen valves allow the PA-One to deliver the latest technology in perfect harmony with traditional Hi-Fi systems.


Input Impedance – 50KΩ
Output Power – 500W (32Ω)
Output Impedance – 32Ω~300Ω
Input Sensitivity – 300mV
Frequency response – 20Hz~20KHz (+0dB, -0.5dB)
THD – 0.5%
S/N Ratio – 90dB
Input Interface – 1x Balance Input, 1x RCA Input, 1x Coaxial, 1x Optical, 1x USB
Output Interface – 2x Standard earphone Jack (1x High/low impedance each 1 pair)
Vacuum Tube – 2 x 6SL7, 2 x 6SN7
Size (W x H x D) – 180mm x 284.5mm x 163.5mm
Net Weight – 7.5KG

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QUAD Electronics


  • UK from: £1.50
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