Turn On Options Switch

For convenience, there are three ways the Model 2125 v.2 can be turned on and off:

•Manually, by pressing the Power button on the front panel.

•Automatically by Audio, when an audio signal is present at the audio Input jacks.

•Automatically by 12V, when a suitable trigger voltage is applied to the 12V input jack.

Note: When either automatic turn on option is selected the front panel Power button is disabled so that power on/off is determined solely by the triggering preamp, receiver or active audio signal. Pushing the Power button will not turn the amp on or off.

Manual Position

When the Turn On Options switch is in its Manual position the Model 2125 v.2 must be turned on and off manually by pressing the Power button on its front panel every time you wish to use your audio system.

Audio Position (Automatic on/off)

When the Turn On Options switch is set to one of the two Audio positions, the Model 2125 v.2 will be turned on only when an audio signal is present at the L or R Input jacks. After the audio signals cease the Model 2125 v.2 will remain on for about 8-10 minutes before shutting off. This prevents unintended turn-off during pauses in your music or movies.

Note: When the Turn On Options switch is set to Audio the Model 2125 v.2 will turn itself on immediately when you connect its AC cord, even without any audio signal present. This is normal and another reason why all connections and settings should be made before connecting its AC cord.

Quieter: This is the more sensitive setting and the amp will turn on automatically with a very low level audio signal corresponding to about 1mV. In most cases this will be the preferred setting. If for some reason the amp never turns off you may have some noise in your system that is false triggering the automatic turn on circuit. In this case you should use the Louder setting.

Note: If you need the Model 2125 v.2 to turn on at an even lower volume level, simply turn down its L and R Level controls. Try setting the level controls at 12 o’clock and see if the volume level is low enough when the amp turns on.

Louder: This is the less sensitive setting and the amp will turn on automatically with a slightly higher level audio signal corresponding to about 6mV. You should first try the Quieter setting. If for some reason the amp never turns off when set to Quieter then you can use the Louder setting.

Note: If the Model 2125 v.2 is driving only passive subwoofer(s), surround or rear channels you will achieve more consistent automatic turn on by using the 12V DC trigger. At the beginning of most films the sub and surround levels are often lower than the minimum level required by the Audio sensing circuit.

12V Position (Automatic on/off)

When the Turn On Options switch is set to its 12V position, the Model 2125 v.2 is turned on and off only with an external +9 V to +12 V voltage from your preamp or AV Receiver. When the external voltage ceases the Model 2125 v.2 will turn off within a few seconds. The 12V switch position disables the front panel Power button.

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Parasound 2125 V.2 Turn On Options Switch, Manual Position, Audio Position Automatic on/off, 12V Position Automatic on/off
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2125 V.2 specifications

The Parasound 2125 V.2 amplifier stands out as a premier choice for audiophiles seeking high-quality sound reproduction combined with solid build quality. It is well-regarded for its ability to deliver powerful, clear audio while maintaining the signature warmth that is often associated with high-end audio equipment. With a sleek design and robust features, the 2125 V.2 is an excellent addition to any home theater or audio system.

One of the primary features of the Parasound 2125 V.2 is its high-power output. The amplifier is capable of delivering 125 watts per channel into 8 ohms and 185 watts into 4 ohms, allowing it to drive a wide range of speakers with ease. This power output supports dynamic sound reproduction, crucial for producing the subtleties in both music and movie audio tracks.

The amplifier employs a linear power supply with a toroidal transformer, which is known for its efficiency and low noise. This design choice enhances the overall performance by reducing electromagnetic interference and ensuring a clean power delivery to the amplification stages. The use of high-quality components throughout the amplifier, such as durable capacitors and low-noise transistors, further contributes to its reliability and auditory fidelity.

In terms of technology, the Parasound 2125 V.2 incorporates a class AB amplifier topology. This hybrid design offers the benefits of both class A and class B amplifiers, delivering robust performance with minimal distortion. This results in a smooth, warm sound signature that is pleasing for extended listening sessions. The amplifier also features a low-frequency filter for optimized performance when used in home theater setups, allowing it to handle various audio formats without compromising on quality.

Additionally, the Parasound 2125 V.2 is equipped with a variety of connections, including balanced XLR inputs as well as unbalanced RCA inputs. This flexibility makes it easy to integrate the amplifier into different audio systems while ensuring compatibility with a wide range of equipment. For added versatility, the amplifier includes a trigger input, enabling remote operation when paired with compatible devices.

The build quality of the 2125 V.2 is another standout characteristic. Housed in a rigid metal chassis, the amplifier not only looks elegant but also protects its sensitive internal components. The front panel features a straightforward design with easy access to volume control and indicator lights that provide real-time feedback on the amplifier’s status.

In conclusion, the Parasound 2125 V.2 amplifier offers a potent blend of power, sound quality, and flexibility, making it an excellent choice for music lovers and cinephiles alike. Its well-thought-out design and engineering reflect Parasound's commitment to delivering exceptional audio equipment that can satisfy even the most discerning listeners.
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