HiFi Man Prelude Class A Headphone Amplifier
In stock
Available - Usually ships within 14 days
Features
| Includes Pre Amp | No |
|---|---|
| Digital USB Input | No |
| Brand Color | None |
| Digital Optical Input | No |
| Digital Coaxial Input | No |
| Warranty The length of time your product is protected by warranty | 2 Years |
| Product Type | Other |
Tech Specs
- FREQUENCY RESPONSE - 20-50kHZ, +/- 1dB @ 1KHz
- SIGNAL TO NOISE RATIO - -113dB @ 1KHz
- THD+N - 0.0009%, low gain @ 1KHz
- POWER OUTPUT - (0.1% @ 1KHz, balanced) 10W @ 32 ohms, 6W @ 64 ohms, 2.5W @ 150 ohms, 1W @ 300 ohms, 560mW @ 600 ohms
- TOTAL POWER CONSUMPTION - 50W
- DIMENSIONS (LXHXW) / WEIGHT - 330x56x260mm, protrusions not included / 6.5kg
Description
The HiFi Man Prelude Class A Headphone Amplifier is the flagship amplifier in the range. The input stage uses a fully balanced architecture. As a result, even the single-ended RCA input is converted to a balanced signal to benefit from increased noise rejection.
Also, the output stage is Class A giving a high powered output with a natural timbre. The unit has a very wide frequency response from 20Hz to 50 kHz and a THD of only 0.0009%. The power supply is designed to be low noise and uses a toroidal transformer that ahs a low magnetic field.
Low noise power supply and ALPS potentiometer
The power supply of the HiFi Man Prelude Class A Headphone Amplifier uses a customised high power low noise toroidal transformer along with a high-speed regulator circuit. The unit also uses a high-end Alps potentiometer for volume control. Alps make the best potentiometers that have a long life and accurate channel balance. Finally, the housing is made from a single piece of aluminium for excellent shielding.
Connectivity and headphone connectors
There are many different types of headphone connector. The HiFi Man Prelude Class A Headphone Amplifier has outputs for the most common types. On the front of the unit there are two combo connectors that can take standard 6.3mm plugs or 3 pin XLR connectors. Next, here is a 4.4mm balanced connector.
Additionally, the is a 4 pin balanced XLR connector that is specifically designed for balanced headphones. The front also houses the input and output selector switch and the volume control. Next, the rear of the unit has standard RCA and XLR inputs as well as XLR and RCA outputs for a preamp.
What is a balanced amplifier?
The elimination of noise is especially important with headphone amplifiers as the transducers are very close to your ears. As a result any noise will be much more apparent. Consequently, balanced amplifiers use a different lead configuration to normal RCA leads. For example two signal wires carry the same signal but in opposite phase.
These are known as the hot and cold leads. When the signal is recombined at the amplifier any noise is cancelled out, similar to 2-2 being 0. Lastly, there are balanced connectors that are specifically designed for headphones these being the 4.4mm type and the 4 pin XLR type.