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Quad PA-One + Headphone Amplifier/DAC
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Quad PA-One + Headphone Amplifier/DACQuad PA-One + Headphone Amplifier/DACQuad PA-One + Headphone Amplifier/DACQuad PA-One + Headphone Amplifier/DAC

Quad PA-One + Headphone Amplifier/DAC

£1,162.50 Exc. VAT |  


Please note we are unable to export any Quad products to the USA due to distribution restrictions

Quad PA-One + Headphone Amplifier/DAC

After the success of the PA-One, described by HiFi World as 'easily the best headphone amplifier out there', the PA-One + only seeks to improve and we think it has done that perfectly!

Quad PA-One+ Valve Headphone Amplifier is a truly flexible and user-friendly model that has been produced to seamlessly cater to all headphone devotees, driving premium hi-fi headphones and delivering the exceptional sound quality Quad amplifier owners have long enjoyed... not through speakers but through your headphones.

What’s New?

Quad PA-One+ Valve Headphone Amplifier features a re-engineered board for a greater output power of 500mW into 32ohms, broader frequency response and vastly enhanced signal to noise ratio. The inclusion of an improved ESS Sabre 9018 K2M DAC enables PCM playback up to 384kHz and DSD256. The internal QUAD valve circuitry is also redesigned for more efficient performance.

Premium Valves

Quad PA-One+ uses carefully selected dual 6SL7 and dual 6SN7 amplification valves to deliver the latest technology in perfect harmony with traditional Hi-Fi.

Different Formats

Designed to help high-end headphones reach their full potential through radically improved amplification, the effortless and effective PA-One+ supports a remarkably wide selection of digital and analogue sources so you can enjoy music without needing to worry about decoding different formats.


PA-One Plus offers a range of analogue inputs for maximum versatility including gold plated RCA input, 6.3mm headphone jack, 4-pin XLR balanced headphone input, 3-pin XLR balanced input and gold plated RCA pre-out (for use as a Pre-amp). Digital connections are also catered for via USB input with PCM playback up to 384kHz and DSD256 and gold plated coaxial and optical inputs.

  • Input Impedance: 50kΩ
  • Output Power: 500mW(@ 32Ω )
  • Output Impedance: 32Ω~300Ω
  • Input Sensitivity: 300mV
  • Freq Response: 20~20k Hz (0/-0.5dB)
  • Distortion: 0.5% at 1kHz
  • Channel Balance: ±0.5dB
  • S/N Ratio: 90dB
  • Vacuum Tubes: 2x 6SL7, 2x 6SN7
  • Digital Sampling: 44.1-192kHz
  • USB Sampling: 384kHz, DSD256
  • In: 3-pin bal, RCA, USB, Coax, Opt
  • Out: Stnd/4-pin bal headphone, RCA
  • Dimensions (WDH): 180 x 260 x 170mm
  • Net Weight: 6.5kg

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