HPA is a powerful headphone amplifier. Transparent and reliable, HPA features a state-of-the-art electronic design, characteristic of the Italian brand Teknosign, appreciated by renowned live and studio engineers worldwide. Our meticulous manufacturing process ensures HPA’s perfect and high-quality operation for decades while respecting the environment thanks to its long lifespan and the extensive use of noble metals, reducing the use of polluting materials. Before using HPA, we recommend spending a few minutes reading this quick manual, which explains its functions and provides usage tips.

HPA is a Class A/B linear headphone amplifier. It features a high-quality linear power supply and two Combo Line XLR3F/6.35 mm (1/4”) TRS inputs. On the front panel, the MONO/STEREO switch, GAIN potentiometer, and Output Impedance selector allow you to listen to your headphones with maximum linearity, enabling you to focus solely on your performance.

For more information about our BOX LINE series and other TEKNOSIGN products, do not hesitate to contact us at info@teknosign.it.

SPECIFICATIONS



• Audio Circuit: Class AB Linear Amplifier
• Output Power: 1.6W @ 8Ω / 2.5W @ 32Ω / 0.4W @ 200Ω
• Frequency Range: 2Hz–150kHz
• Gain: 15dB
• Maximum Output Voltage: 9V rms
• Maximum Output Current: 450mA rms
• Noise: Less than -90dBV
• Maximum Input: XLR3F/6.35 mm (1/4”) TRS, +22dBu
• Total Harmonic Distortion: <0.01% (20Hz-20kHz)
• Input Selector: 3-Input Relay Controlled Selector
• Power Supply: Fully Linear Power Supply
• Volume Control: High-Precision Potentiometer
• RF EMI Filter: Integrated EMI Suppressor
• XLR Configuration: AES Standard (hot pin: 2)
• Connectors: Two Combo - XLR3F/6.35mm (1/4”) TRS
  

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