Allnic Audio HPA-5000 XL OTL/OCL Vacuum Tube Headphone Amplifier

Information

The Allnic HPA-5000 XL is a reference-grade vacuum tube headphone amplifier designed to deliver exceptional transparency and musical realism through an Output Transformer-Less (OTL) and Output Capacitor-Less (OCL) architecture. By eliminating transformers and output capacitors from the signal path, the design aims to preserve signal purity and reduce coloration while maintaining the natural character of high-quality recordings.

The amplifier employs Allnic’s balanced Positive-Negative cancellation circuitry and operates in pure Class A, providing a refined listening experience across a wide range of headphone designs. Optimized for headphones with impedances between 30 and 600 ohms, the HPA-5000 XL is engineered to combine driving capability, low noise, and detailed musical reproduction.

Additional refinements include a precision 41-step silver-contact attenuator, patented Absorb GEL tube damping technology, and carefully selected NOS vacuum tubes. Together, these features help ensure excellent channel balance, reduced microphonic effects, and long-term listening enjoyment.

Features

• True OTL/OCL headphone amplifier design
• Pure Class A operation
• Balanced Positive-Negative cancellation circuitry
• Designed for headphones from 30 Ω to 600 Ω
• Precision 41-step silver-contact attenuator
• Excellent channel balance across the volume range
• High-quality NOS vacuum tubes
• Patented Absorb GEL tube damping technology
• Reduced microphonic noise and vibration effects
• Transparent and highly detailed sound reproduction
• RoHS-compliant construction and materials