Quad PA-One+ Preamplifier; DAC; Headphone Amp

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Please Note: This item is in stock and ready for despatch. Please note that it may not be on demonstration or available for immediate in-store collection.

Special Price $2,950.00 (Normally Regular Price $3,095.00 )

Versatile Component Considered One Of The Best Available

Balanced, RCA, Coaxial, Optical and USB Inputs 

Standard 6.35mm Output & 4-Pin Balanced Output, Preamp RCA Outputs

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About Quad PA One + Headphone Amplifier

Want to listen at home to the best headphone sound around? Of course you do and the Quad PA-One+ is the perfect companion. Valve powered goodness at its very finest.

There’s something undeniably beautiful and alluring about a valve amplifier. Is that just nostalgia or is there really some secret behind the captivating sound? As most of us know, so-called advances in technology don't necessarily mean a better life and amplification is definitely a contender. Just look at the live music scene where valve guitar amps are still the choice of many.

Quad PA-One+ Headphone Amp

Therefore Quad - the UK name synonymous with valve amplifiers - is proud to deliver you the PA-One+ Headphone Amplifier, a highly versatile and user-friendly amplifier that has been designed to be the perfect match for any Hi-Fi music devotee. 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 normally connected to poorly matched amplification.

Well, with Quad’s dedicated Headphone amplifier that is all about to change. The Quad PA-One+ is dedicated to achieving the full potential of any set of headphones connected to it. An amazingly wide variety of digital and analogue sources - Balanced, RCA, Coaxial, Optical, USB, makes it easy to listen to music without ever having to ponder on decoding different formats. Simple and effective.

With the increased popularity of computers as source, the USB DAC input 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.

As well as the standard 6.35mm headphone output there is also a balanced 4 pin output to take the sound of suitably equipped headphones to the next level. There is also a Preamp output on the back panel so the PA-One+ can be easily integrated into a larger system.

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

In The News

"The Quad PA-One+ would be an accomplished headphone amplifier and DAC combo at $1,300 over the list price. The fact that it comes in under $3,000 and that it not only stands alone as a one-stop headphone amp/DAC for both digital and analog input listening duties, but can integrate itself into a larger system thanks to its unbalanced pre-amp outs makes it an even bigger bargain. It is an uncanny translation device for recordings of all types and genres and adroitly conveys the essence, or soul, of a track or album without digital artifice. Slightly warmer in its presentation than the similarly sonically-accomplished Naim DAC-V1 ($3,300), the One+ adds the options of further flavor through tube rolling.

A fun, Swiss Army Knife of an amp/pre/DAC, the little Quad should fit the bill for many hi-fi and personal-audio enthusiasts looking to either aspire to great sound, or wanting an end-game playback device that you’d have to spend a fair amount more to better. Like I said at the beginning of this piece, if you’re unfamiliar with the company’s designs or history, do yourself a favor and get some Quad education. It could just change the way you think about the evolution of hi-fi and make you want to hear the PA-One+ more than anything I could ever write." Rafe Arnott, Inner Fidelity

UK Magazine Hi-Fi World recently got very excited about the Quad PA-One+ and called it "The best headphone amp in the world". High praise indeed! Here are a few other things they had to say: "lf you really value headphone listening then the PA-One+ is a must-have, it suits all headphones and really kicks them into life. With superb dynamics and easy-on-the ear smoothness it exists in a realm above current silicon chip, 5V USB power line driven alternatives, riddled with charge-pump dc convertors. The PA-One+ has 250 honestly generated Volts inside and it's audible. This unit is easily the best headphone amp out there, providing you don’t want to carry it around in your back pocket!"

Our Take On Quad PA One + Headphone Amp

In a recent shoot out with some pretty impressive competition the PA-One+ came out smelling of roses. Was it the magnificent sound stage resolution that did it? Nope. Was it the fine inner detail and realistic timbral correctness which made all instruments sound rich and real? Nope. Was it the flagship construction and the warm glow of valves? Nope again. The main reason this Quad valve headphone amp was preferred by all listeners was the total ease of listening through the PA-One+. It was a completely relaxing experience that made you want to listen and listen and listen no matter the genre or quality of recording.

With the increased popularity of computers as source, the Quad PA-One+’s USB DAC allows its owners to listen to digital music sources from a computer or laptop (Windows or Mac) via the USB connection. And amazingly that spectacular valve sound is unaffected. The PA-One+ is USB 1.1 and 2.0 compliant and supports sampling frequencies ranging from 35kHz to 192kHz. And that is why you need one in your life. Quite a trick and probably a large part of the reason Hi-Fi World called it "The best headphone amp in the world". But don't just take our word for it - come in and have a listen for yourself. It may just change your life.

Main Features & Specifications

  • Design: High quality valve headphone amplifier
    • Works Wonderfully With Quad ERA-1 Planar Magnetic Headphones
  • Input Impedance: 50K
  • Output Power: 500W / 32 Ohms
  • Output Impedance: 32~300 Ohms
  • Input Sensitivity: 300mV
  • Frequency Response: 20Hz~20KHz (+0dB, -0.5dB)
  • THD: 0.5%
  • Channel Balance: ±0.5dB
  • S/N Ratio: 90dB
  • Input Interface: 1 Balanced XLR Input, 1 RCA Input, 1 Coaxial, 1 Optical, 1 USB
  • Output Interface: 1 Standard 6.35mm Headphone Output, 1 4-pin Balanced Output
  • Vacuum Tube: 2 6SL7, 2 6SN7
  • Dimensions (WxHxD): 180 x 170 x 260 mm
  • Net Weight: 5.5kg
  • Manufacturer's Warranty: 2 Years

Note: Features & Specifications Subject To Change Without Notice. E&OE

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