Musical Fidelity V90-HPA
Headphone amplifier from Musical Fidelity, fitted with an analogue input and an asynchronous USB connection, designed for precise and refined listening.
Description
The Musical Fidelity V90-HPA is an amplifier dedicated to headphone listening, designed to reproduce music with precision. It offers two input paths: a classic analogue input and an asynchronous re-clocking USB connection, allowing a computer or digital source to be connected directly.
The USB connection operates at 24-bit/96 kHz with an asynchronous re-clocking system, a technique intended to limit synchronisation errors during digital signal transfer and preserve the quality of the reproduced sound. This dual input, analogue and digital, offers a degree of flexibility depending on the sources available.
The chassis combines a front panel and cover made from custom-machined profiles, with a finish achieved through glass bead blasting giving a matt, textured appearance in a shade close to moonstone. This attention to manufacturing reflects a pursuit of quality that goes beyond sound alone.
This type of amplifier is aimed at those wishing to get the best out of a hi-fi headphone, whether from an analogue source or a computer connected via USB. It will suit both demanding portable listening and a fixed setup dedicated to music.
Technical specifications
| Frequency response | 20 Hz to 80 kHz (+0, -1 dB) |
| Output impedance | 50 Ω, suited to 10-600 Ω headphones |
| Signal to noise ratio | > 109 dB A-weighted |
| Total harmonic distortion | < 0.005 % typical (20 Hz to 20 kHz) |
| Digital inputs | Asynchronous USB Type B up to 24 bit / 96 kHz |
| Power supply | External 12 V 500 mA DC power supply |
| Weight | 600 g unpackaged / 1.1 kg packaged |
What to check before buying used
The volume potentiometer should be tested through its full rotation to detect crackling or cutouts, a sign of track wear. Also check the asynchronous USB connection: faulty re-clocking can cause micro-dropouts or unstable recognition by the computer. Finally, examine the condition of the headphone jack sockets, used with every connection, as well as the bead-blasted finish of the cover, which is prone to scratches and grime build-up over time.
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