About the Quad PA-One+
A versatile tube headphone amp
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.
Product highlights:
- compact, high-performance headphone amp with vacuum tubes
- pairs well with the Quad ERA-1 planar magnetic headphones
- 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:
- 7-1/8"W x 6-3/4"H x 11-1/4"D
- weight: 16.5 lbs.
- warranty: 2 years
- Our 60-day money-back guarantee
- MFR # QUADPA1PLS
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#11
Eco-friendly "peanuts"
Biodegradable and made in-house
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More details on the Quad PA-One+
The Quad PA-One+ replaces these items
- compact, high-performance headphone amp with vacuum tubes
- vacuum tube preamp and power amp stages
- high-resolution 24-bit/192kHz digital-to-analog converter
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