Quad PA-One black

The Quad headphone amplifier is designed to extract the optimum performance from any connected headphones. A wide range of digital and analog sources (balanced, RCA, coaxial, optical, USB) allows for seamless access to music listening without ever having to worry about decoding formats or standards.

Everything is simple yet highly efficient. Quad engineers have equipped the PA-One with tube amplification. A set of carefully selected tubes for HiFi use (2 x 6SL7, 2 x 6SN7, 1 x EZ81) places the PA-One at the forefront of the latest technological advancements while remaining faithful to and in perfect harmony with traditional HiFi.

Tube Headphone Amplifier and Digital Converter

• Tubes: 2 X 6SL7, 2 x 6SN7, 1 x EZ81

Measurements

• Input Impedance: 50k Ω
• Output Power: 500mW into 32 Ω
• Output Impedance: 32 Ω - 300 Ω
• Input Sensitivity: 300mV
• Frequency Response: 20 Hz - 20 Hz (+0.5dB, -0.5dB)
• Total Harmonic Distortion: 0.5%
• Channel Balance: ± 0.5 dB
• Signal-to-Noise Ratio: 90 dB

Connectivity

• Input Interfaces:
  • 1 balanced input
  • 1 RCA input
  • 1 coaxial input
  • 1 optical input
  • 1 USB input
• Output Interfaces:
  • 2 Standard headphone jacks (each with 1 high/low impedance)

General

• Dimensions (W x H x D): 180 x 163.5 x 284.5 mm
• Weight: 7.5 Kg