BALANCED/UNBALANCED Signals

RCA BRIDGED MONO: This option configures your amplifier to drive one loudspeaker from one unbalanced signal fed to the RIGHT RCA input. The loudspeaker is connected to both channels positive

(+)output terminals, giving an available power in this mode four times the rated output of the amplifier, approximately 900 watts into 8 ohms. Special care must be taken in connecting the input signal and loudspeakers to ensure safe operation and best possible performance.

XLR STEREO: This option provides a stereo output signal from a balanced stereo input signal connected to both the left and right XLR inputs. All the advantages of balanced line transmission will be realised with good rejection of noise and some freedom from earth or ground loops (hum).

XLR BALANCED MONO: In this mode both channels of your Plinius SA-250 combine to operate as a true balanced mono amplifier, from input to output. This configuration provides the highest quality mono performance from a balanced line input connected to the RIGHT BALANCED XLR INPUT. As with RCA Bridged configuration, the loudspeaker is connected to both channels positive (+) output terminals. Available power in this mode is four times the rated output of the amplifier, approximately 900 watts RMS into 8 ohms. Special care must be taken in connecting the input signal and loudspeakers to ensure safe operation and best possible performance.

Balanced or unbalanced input options will depend on the type of signal available from your preamplifier or other equipment. The Plinius SA-250 provides both options to allow you to choose the most suitable preamplifier for your purposes. Plinius Preamplifiers offer both balanced and unbalanced output options.

BALANCED LINE is normally used to transmit signals in a professional environment. Because balanced line effectively reduces or eliminates noise pick-up by the system cabling, it has become increasingly more important in high-quality domestic high fidelity systems.

UNBALANCED leads such as single ended, RCA or coaxial are common and are used in the majority of audio signal systems. The terminal plug and socket are most commonly called RCA and can be found on your Plinius SA-250 for use as the standard input terminals for both left and right inputs.

OUTPUT TERMINALS - STEREO

Output connections for the loudspeakers are provided on the left and right hand side of the rear panel. Two parallel pairs of binding posts for each channel are fitted – these provide ease of use with bi-wiring and multiple cables requiring a large contact area.

OUTPUT TERMINALS - BRIDGED/MONO

In bridged/mono modes, the loudspeakers utilise only the positive (+) outputs of your Plinius SA-250. In this configuration power output to the loudspeakers is dramatically increased (around four times as much), and is commonly used in conjunction with another amplifier for amplification of each channel from the preamplifier.

SA-250 specifications

The Plinius Audio SA-250 is a remarkable power amplifier that has garnered attention for its robust build quality and superior sound performance. Known for its elegant design and advanced technology, the SA-250 is a favorite among audiophiles and music enthusiasts who seek high-fidelity audio experiences.

One of the standout features of the SA-250 is its solid-state architecture, which leverages a fully complementary output stage to ensure minimal distortion and maximum power efficiency. This amplifier is rated at 250 watts per channel into 8 ohms, providing ample power to drive a variety of loudspeaker types. With a dynamic power that reaches up to 500 watts into 4 ohms, the SA-250 can handle even the most demanding audio setups with ease.

The amplifier incorporates Plinius' proprietary New Zealand-crafted transformer, which offers excellent energy storage and helps maintain stable performance. This transformer design plays a crucial role in providing the SA-250 with a smooth, dynamic sound that retains musicality and clarity across all frequencies. The amplifier’s warm, analog sound signature is a testament to Plinius' commitment to creating equipment that enriches the listening experience.

Additionally, the SA-250 utilizes advanced circuitry to minimize signal degradation while maximizing bandwidth. Features such as premium-quality components, an extensive power supply, and meticulously engineered circuit layouts work together to produce a refined soundstage, detailed imaging, and remarkable instrument separation. The amplifier’s design not only emphasizes performance but also aesthetic appeal, with a polished aluminum chassis that fits seamlessly into any audio setup.

The amplifier's operational flexibility is another highlight, as it includes both balanced and unbalanced inputs, allowing for easy integration with a variety of preamps and audio sources. Its user-friendly controls and indicators further enhance the listening experience, making it simple to operate even for those new to high-end audio systems.

In summary, the Plinius Audio SA-250 stands out as a powerful and elegant amplifier that embodies the ideal balance of technology and artistry. Its ability to deliver a rich and immersive sound, paired with its reliable performance and sophisticated design, solidifies its position as a top choice for audiophiles seeking ultimate audio quality. Whether used in a dedicated listening room or as part of a larger home theater setup, the SA-250 continues to impress and inspire.