BC Acoustique EX 322
BC Acoustique EX 322 stereo integrated amplifier, fitted with an upgradeable input via an optional card and a Pre-Out output, for a two-channel hi-fi system designed to evolve.
Description
The BC Acoustique EX 322 is a stereo integrated amplifier, meaning a unit that combines within a single chassis the preamplification stage, source management and the power stages responsible for driving a pair of speakers. It forms the central point of a two-channel hi-fi system, between the sources and the transducers, with a stated focus on high fidelity and accurate reproduction.
On the power front, the unit is rated at 2x80W RMS into 8 ohms and 2x150W into 4 ohms. This near-doubling of power when impedance is halved reflects a power supply capable of keeping up with current demand: in practice, the amplifier does not falter when faced with speakers whose load drops below the nominal 8 ohms. This headroom is backed by an oversized 500VA audiophile transformer, a generous size relative to the output power, which leaves margin for transients and dense passages.
The connectivity includes five audio inputs, one of which is reserved for optional cards: depending on the card fitted, the EX 322 can thus accommodate a digital section, a network module or a phono input. This modular approach allows the unit to be adapted as sources evolve, without changing the amplifier. On the front panel, a 6.35mm headphone socket allows for individual listening. Finally, a Pre-Out output taps the signal after the preamplification stage and opens the way to bi-amping, by pairing a second power amplifier with speakers designed for this type of connection.
This type of unit is aimed at listeners building a classic stereo system, listening in the living room on speakers and wishing to retain a technical way forward: an upgradeable input on one side, a preamplified output on the other. The stated power figures suit both medium-sensitivity speakers and more demanding loads, and the presence of a headphone output also makes it a unit usable for late-night or close listening.
Technical specifications
| Output power | 2x80W RMS into 8 ohms |
| Power into 4 ohms | 2x150W |
| Power supply | Oversized 500VA audiophile transformer |
| Inputs | 5 audio inputs, one for an optional card (digital, network, phono, etc.) |
| Headphone output | 6.35mm socket on the front panel |
| Preamplified output | Pre-Out, bi-amping compatible |
What to check before buying used
The volume potentiometer should be tested by turning it through its full range to detect any crackling or dead spot, a sign of worn tracks. Listening on headphones via the 6.35mm socket allows you to check for the absence of hiss or hum, which would indicate ageing capacitors in the power supply. The speaker protection relay should engage without excessive clicking when powered on, and the optional input card fitted should be identified before purchase, as it determines which sources can actually be used.
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