The Allnic HPA-10000 XL is a reference-grade vacuum tube headphone amplifier designed to deliver exceptional transparency, power, and control through a true Output Transformer-Less (OTL) and Output Capacitor-Less (OCL) architecture. By eliminating transformers and output coupling capacitors from the signal path, the amplifier is engineered to minimise coloration and preserve the integrity of the source signal.
Developed to drive even demanding low-efficiency planar magnetic headphones, the HPA-10000 XL combines high output power with Allnic’s proprietary Positive/Negative Feedback Cancellation circuitry. The result is a highly dynamic and detailed presentation with low distortion and excellent musical realism across a wide range of headphone designs.
The amplifier further incorporates Allnic’s flagship 61-step Constant Impedance Attenuator, vibration-isolated tube mounting technology, remote-controlled operation, and OTL/OCL preamplifier output functionality. Together, these features make the HPA-10000 XL suitable as both a premium headphone amplifier and a high-performance line-stage component.
| Dimension | 430 × 390 × 185 mm |
|---|---|
| Inputs | 3 × RCA, 2 × XLR |
| Headphone Outputs | 2 × 6.35 mm (1/4"), 2 × 4-pin balanced XLR |
| Line Preamp Output | 1 × RCA pair (+16 dB) |
| Frequency Response | 20 Hz - 20 kHz (±0 dB, flat) |
| Voltage Gain | +28 dB |
| Optimum Headphone Impedance | 15 Ω - 600 Ω |
| Output Power | 10 W |
| Maximum Input Voltage | 9 V RMS |
| THD | Less than 0.03% (1 kHz, 1 V output) |
| Signal-to-Noise Ratio | -90 dB (CCIR, 1 kHz) |
| Power Consumption | 180 W |
| First Gain Stage Tubes | 7258 × 2 |
| Second Gain Stage Tubes | E180CC × 2 |
| Output Tubes | 6C19P × 8 |
| Fuse Rating | AC 3 A, 250 V |
| Net Weight | 15.4 kg |
| Packed Weight | 18 kg |
