Quad PA-One Plus Headphone Amplifier

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A highly versatile and user-friendly valve amplifier that has been designed to be the perfect match for any headphone devotee. Simple and effective with an amazingly wide variety of digital and analogue sources – balanced, RCA, coaxial, optical, USB; make it easy to listen to music without ever having to ponder on decoding different formats.

More Information
Manufacturer Link Quad PA-One Plus Headphone Amplifier
Manufacturer Quad
Free warranty 2 years
Delivery Charge Free
Delivery Time 1 - 5 Working Days
Card Surcharge No
See more Quad products.

Quad PA-One Headphone Amplifier

With the increased popularity of computers as source, the PA-One USB DAC allows consumers to enjoy listening to digital music sources from a computer or laptop (Windows or Mac) via USB connection. The PA-One is USB 1.1 and 2.0 compliant and supports sampling frequencies ranging from 35kHz to 192kHz, a real treat for any Hi-Fi enthusiast.

Finally, Quad engineers have incorporated the PA-One with valve amplification. Carefully selected Hi-Fi amplification valves - 2×6SL7, 2×6SN7, 1×EZ81 allow the PA-One to deliver the latest technology in perfect harmony with traditional Hi-Fi. Indeed the closest approach…


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

Quad PA-One Headphone Amplifier