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Quad PA-One+

Vacuum tube headphone amp/DAC/preamp

Item # 306PA1P

This versatile component can serve as a solid preamp for your sound system, or a top-notch headphone amp.

This versatile component can serve as a solid preamp for your sound system, or a top-notch headphone amp.

Item # 306PA1P

Ship date unknown

$1,695.99

About the Quad PA-One+

A versatile tube headphone amp 

Audiophiles prize vacuum tube amplifiers for their warm, detailed and transparent sound. The British hi-fi company Quad has been working with tubes since 1940, and they've put all their expertise into the PA-One+. It's a versatile component that can serve as a preamp in a two-channel sound system and as a top-notch headphone amplifier for private listening.

A versatile tube headphone amp 

Audiophiles prize vacuum tube amplifiers for their warm, detailed and transparent sound. The British hi-fi company Quad has been working with tubes since 1940, and they've put all their expertise into the PA-One+. It's a versatile component that can serve as a preamp in a two-channel sound system and as a top-notch headphone amplifier for private listening.

Connections

The PA-One+ has inputs for digital and analog sources. The rear panel features a Type B USB port, plus one optical and one coaxial digital input. For analog sources, there's an unbalanced RCA stereo pair and a balanced XLR input. There's a stereo RCA line output on the back for connecting to a power amplifier.

Headphone users have a choice: on the front panel is a standard 1/4" headphone output, plus a 4-pin XLR output for select headphones with XLR4 connectors.

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Product highlights:

  • compact, high-performance headphone amp with vacuum tubes
  • combines classic tube amp sound with modern digital features
    • tubes provide dynamic, consistently smooth sound
  • high-resolution 24-bit/192kHz digital-to-analog converter
  • five amplification vacuum tubes:
    • 2 x 6SL7
    • 2 x 6SN7
    • 1 X EZ81
  • high-output power amplifier: 500mW at 32 ohms
Inputs:
  • digital audio inputs: 1 USB (Type B), 1 optical (S/PDIF), and 1 coaxial (S/PDIF)
  • stereo unbalanced RCA audio input
  • 1 pair balanced 3-pin XLR line-level inputs
Outputs:
  • 4-pin XLR output for select headphones
  • full-size 1/4" headphone jack
  • 1 pair stereo RCA outputs for connection to a compatible audio component
General info and specs:
  • detachable AC power cord
  • signal to noise ratio: 90dB
  • output impedance: 32-300 ohms
  • frequency response: 20-20,000 Hz (-0.5dB)
Dimensions and warranty:

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