Allnic HPA-5000 Hovedtelefonforstærker

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The HPA- 5000 is Allnic Audio’s Output Transformer-Less (OTL) and Output Capacitor Less (OCL) stereo headphone amplifier. The HPA- 5000 XL utilizes a true balanced Positive-Negative cancellation circuit. The HPA- 5000 XL has a voltage gain of +28dB, and a maximum output of 5 watts. Offering stunningly realistic music reproduction, it works best with headphones having an impedance from 30 to 600 ohms.

The HPA- 5000 has the following features:

• Works best with headphones having an impedance of from 30 to 600 ohms

• High-quality, NOS tubes

• True OTL/OCL design

• Pure Class A operation

• Precision 41-step single silver contact attenuator volume control. The HPA-5000 does not employ a digital IC volume control or a low-cost carbon film volume control. The HPA-5000 has no (± 0db) channel unbalance at any volume level.

New vacuum tube damping technology – Allnic Audio’s patented “Absorb GEL tube damper” technology prevents harmful vibrations from reaching the driver tubes and, therefore, prevents micro-phonic noise propagation in the tubes. The Allnic Audio Absorb Gel damper technology effectively solves a problem that plagues most tube amplification systems. Provided other tube components do not introduce micro-phonic noise into your system, with the Absorb Gel damping system, you will enjoy a degree of transparent sound that will surprise and please you.

• As are all Allnic Audio products, the HPA-5000 is fully RoHS (EU Reduction of Hazardous Substances regulation) compliant in construction and material.

Technical Specification

Inputs
one (1) pair of unbalanced RCA, one (1) pair of balanced XLR
Outputs
one (1) x one-quarter inch, one (1) x four-pin XLR balanced
Frequency Response
20Hz-20kHz flat
S/N Ratio
-68dB (CCIR, 1kHz)
Output Wattage
5 Watts
Voltage gain
+28dB
Optimum Headphone Impedance
30 to 600 ohms
Maximum Input Voltage
5 V RMS
Tubes
6AN8 x 1 (New Old Stock, first gain stage, no equivalents); E180CC x 2 (New Old Stock, 2nd stage driver tube: approximately electrically (not sonically) equivalent to CV8431, 7062, 5965, 12AV7, 6416, 6829); 7233 x 4 (New Old Stock)
Dimensions(WDH)
230mm (9.1 inches) x 380mm (3 inches) x 165mm (6.5 inches)
Weight
9kg (19.9 lbs) net; 11kg (24.26 lbs) shipping